The working principle of ac servo motor

 iron motor shell motor parts pig casting iron 
Specifications
1.iron or steel 
2.sand casting 
3.ISO,UL,FM,LPCB,VDS,TS16949 
4.timely delivery 
5.reasonable price
The working principle of ac servo motor with split-phase single-phase asynchronous motor, three phase induction motor though similar, but the rotor resistance of the former is much larger than the latter, diesel engine so compared with the single asynchronous motor, servo motor has three marked characteristics: 1, large starting torque. Due to the rotor resistance is big, the torque characteristic www.facebook.com/guohong.trading curve as shown in figure 3 in curve 1, with normal asynchronous motor torque characteristic curve, compared to 2 a significant difference between the two. It can make the critical slip S0 > 1, this not only makes the torque auto spare parts characteristic closer to linear mechanical properties, and has a large starting torque. Therefore, when the stator's a control voltage, rotor rotating immediately, which has the characteristics of starting fast, high sensitivity. 2, has a wide operating range. 3, no rotation. 


full load 75% load 50%load three phase induction electric motor Y series B35
Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years
The normal operation of the servo motor, as long ac synchronous generator as out of control voltage, the motor stop immediately. When servo motor loss control voltage, it is in single phase operation state, due to the rotor resistance is big, the rotation of single phase induction motor the two opposite diesel generator set directions in the stator rotating magnetic field and rotor effect produced by the two torque characteristics (T1, T2 S1 S2 curve) and synthetic torque characteristic (t-s curve) output power of the ac servo motor is 0.1 100 w. When the power supply frequency 50 hz, voltage is 36 v, 110 v, 220, 110 ac motor v; When the power supply frequency is 400 hz, the voltage have 20 v, 26 v, 36 v, 115 v, etc. Ac servo motor smooth operation, low noise. But control characteristic is nonlinear, and the rotor resistance is big, loss is big, efficiency is low, so compared with with the capacity of the dc servo motor, big volume, heavy weight, so is only applicable to 0.5 100 w small power control system.

The use of 60 hz import motor and power supply design

In the early 90 s, a rubber manufacturing company the five sets imported from North America (second-hand) rubber equipment, there are two production Farrell 11 d mixer and a SL sullair company - 32 type screw air compressor. Basic situation of the three electrical motor 12v 1000w devices test is good, according to the production requirements, companies need to benefit installation fan motor commissioning as soon as possible; But the use of these equipment there is a big technical problem: the driving gear of these devices is 60 hz five sets of high voltage motor, not directly into the 50 hz power grid of our country. But if all replacement for domestic 50 hz, 6 kv motors and high voltage, need to increase cost nearly 1 million yuan. In order to solve the technical problem, technical personnel for imported equipment of acmotortrading.blogspot.com the power supply system, switch gear, motor parameter and so on has carried on the earnest analysis and calculation, decided to adopt frequency conversion principle, tinkering with the system power supply design.

Permanent magnet ac servo motor

Motor parts electric motor fan cover 
Specifications
1.Customised 
2. good quality 

3. 20 years manufacturing experience 
Other Japanese manufacturers, such as: mitsubishi motors (HC - KFS, HC - MFS, HC - SFS, the HC - RFS and HC - it series), Toshiba machine series (SM), big Wei blacksmith (BL series), sanyo electric (BL series), standing stones motor (S), and many other manufacturers also entered the contention of permanent magnet ac servo system. Germany Rexroth generator company or Rexroth Indramat division of MAC series ac servo motor with a total of seven frame # 92 specifications. auto spare parts Germany's Siemens (Siemens) IFT5 series three-phase permanent-magnet ac servo motor divided into two categories: standard and short type, a total of eight stand no. 98 kinds of specifications. Allegedly the series ac diesel generator set servo motor with the same output torque of the dc servo motor IHU compared series, only the latter half of the weight, form a complete set of transistor PWM drive 6 sc61 series, the single phase induction motor most available for six axis motor control. Germany BOSCH (BOSCH) company in the production of ferrite permanent magnet SD series (17) and the water pump price SE series specifications (8) of rare earth permanent magnet ac servo motor and drive controller Servodyn SM series. Gettys famous servo unit production companies in the United States was once a Division as Gould electronics company (Motion Control Division), production diesel engine M600 series ac servo magnetic generator motor and A600 ac motor acmotor2.blogspot.com series servo drives. After the merger to AEG, restored the Gettys name, launched A700 fully digital ac servo system.

The choice of motor with fuse

 small motor spares suppliers of motor parts 
Specifications
1.20 years fan&motor manufactruer 
2.We can open mould&punch&diecast&finish&winding 
3.competitive price,high quality 
Choose fuse type and capacity, according to the protection of the load characteristics, the electric motors size of the short circuit current working conditions and use of the occasion. Most of the small and medium-sized generator price motor with light load or full pressure relief starting, starting current is diesel generator set usually 5 to 7 times of the rated current; The power capacity is larger, low-voltage distribution main transformer (including capacity) in 1000 ~ 400 kva, system impedance is small, when short-circuit fault occurs, the short circuit current is larger; The workplace such as kiln, grinding, poor ventilation condition, the working environment temperature is higher. Therefore, choose fuse breaking capacity and rated current of the melt, squirrel cage small diesel engine induction motor compared with the general industrial use should appropriately increase a bit. 


three phase induction electric motor Y series B35 1.5KW 2.2KW 37KW 75KW
Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years 
Melt the experience formula of the rated current, melt rated current ac synchronous generator (A) = motor rated diesel generator set current (A) (3) the melt rated current simplified formula "melt protection, kw by 6". The simplified formula, is refers to A 380 v cage motors, light load starting or decompression starting full pressure, low operating frequency, suitable for below 90 kw and cage motor. If the actual use of the motor starting frequently, or starting time is long, the empirical formula or the simplified formula of the above results can be appropriately increased a little, but it should not be too large. In short to achieve when the motor starting, melt by fusing; In the case of acmotor2.blogspot.com short circuit fault, the melt must be reliable fuse, cut off power supply, to achieve the purpose of the short circuit protection.

Combination switch HZ5 series

HZ5 series applied to ac 50 hz generator generator set or 60 hz, voltage 380 acmotor2.blogspot.com v and below, the control circuit of electric current to 60 a, used as a power source is introduced into switch or asynchronous motor control switch. HZ5 series annotation type as follows: (1) HZ is combination switch class group code; (2) is 5 design code; (3) the rated current value (A); magnetic motor (4) the switch control motor power (KW); (5) positioning feature code (single-phase clockwise magnetic generator 60 ° L -, M - two-way 60 °); 6 switch structure number (01 - double pole switch, 02 - three pole switch, 3-4 pole switch, 04 - two voltage bipolar switch, 05 - induction motor reversal in switch, 06 - two voltage switch triode, 07 - star delta starter, 08 - two-speed motor switch).

Domestic outfit wire installation method

China export motor lamination shaft rotors 

Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. Silicon steel stamping 

5. Stunning performance
1, commonly used in socket for single core 2.5 square wire, more than 3 horse air conditioning with single core 4 square wire, single www.facebook.com/guohong.trading core 6 square wire used ac motor for the into the line, double color line used for ground wire. Three roll into a set of 2, auto spare parts according to 3 phase induction motor the different Water pump color (with zero line, fire, earth) used in lighting lamps and squirrel cage induction motor lanterns for single core 1.5 square wire, according to the different color two volumes for a group of diesel generator set (for zero line, the line of fire). 3, two core, three core sheathed wire is done using the open wire, more for the magnetic generator site construction, domestic outfit is not used. 4, audio line as thick as possible, the proposal chooses 2 * 2 * 2 or 1.5 1.2 specifications 5. Television distributor to share, alternator generator the more television signals, proposal as far as possible choose under 6 distribution.

The division of surface area

iron motor shell motor parts pig casting iron 

Specifications
1.iron or steel 
2.sand casting 
3.ISO,UL,FM,LPCB,VDS,TS16949 
4.timely delivery 

5.reasonable price 
Drawing at the top of the 1, 2, 3... Number is the serial number of drawing area, such as electrical wiring, three phase induction motor it is to facilitate the retrieval convenient single phase motor reading analysis so as to avoid missing. Drawing area number can also be set in the figure below. Drawing area below the Numbers at the bottom of the text shows that its corresponding components or the function of the circuit, so that readers can clearly know the function generator of the circuit components or parts, to facilitate understanding all the working principle of the circuit. Symbol position index with the figure number, negative and drawing area number combination index method, the composition of index code is as follows: drawing number refers to when a device more than the electrical schematic diagram according to the function of binding, the serial number auto spare parts of each book, usually expressed in Numbers. 


3 Phase induction Electrical Motor MS Series for winding machine

Specifications
ambient temperature:-15 -40 
above sea level : not exceed 1000m 

rated voltage:+-5% 
When a particular components related to the symbolic elements in different size figure drawing, and when each drawing no. Only one page drawing, index acmotor2.blogspot.com can omit "page number" in the code and separator ", ". When a particular components related to the symbol elements appear diesel generator set in the drawings on the same figure number, and the picture, there are several drawing, can omit "drawing number" and the separator "/". When a particular components related to the symbolic elements in different sex, only a drawing of the index code only said "sex". As shown in figure 2-1 in the drawing area magnetic generator 9 KA normally open contacts below "8" is the most ac synchronous generator simple index code. It is pointed out that the coil of the relay KA position in the same picture in figure 2-1 and relay contactor KM coil KA coil at the bottom of the text is contactor KM and relay KA contact corresponding indexes. Electrical principle diagram, contactor and relay coils and contacts dependencies squirrel cage induction motor using right said. The corresponding coil in the schematic diagram below, contact graphic symbol is given, and the below

The working principle of the pump and fan - screw pump

Screw pump is a kind of using screw pitch rotary pump suction and discharge the electric vehicle motor liquid. Screw pump rotor by active screw l (can be a root, also can have two or three) and driven screw ac electric motor 2. Driving screw and driven screw do turn in the opposite direction, thread pitch, fluid from inlet to be screw axis forward pressurization to discharge. This pump is applicable to high acmotortrading.blogspot.com pressure, small flow. Refrigeration system normally used for transport and the speed of oil pump bearing grease.

The choice of control transformer

Motor parts electric motor fan cover 
Specifications
1.Customised 
2. good quality 

3. 20 years manufacturing experience 
When the machine tool www.facebook.com/guohong.trading control electric equipment is more, lines 3 phase induction motor and more complex, had better use the transformer step-down power diesel engine of control, to improve the reliability of generator price the work. generator Control the capacity of transformer, can choose according to the following two conditions: 1, according to the control circuit in the maximum when the workload required power to choose, to ensure that the transformer does not exceed the permitted temperature rise in long-term work. Electrical control system design of transformer the single phase motor required capacity (VA); Control circuit when the maximum load power appliances needed (VA), for ac electrical appliances, 


full load 75% load 50%load three phase induction electric motor Y series B35
Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years
Pxc should take the appliance of the holding power. As to the reserve coefficient of the transformer is 1.1 ~ 1.25. Part 2, the capacity of transformer should be able to guarantee has been started single phase induction motor and appliances in other. Appliances, still can reliably to keep off, and to make sure that the electrical appliances will launch at the same time. Also can start off. The Pb press type calculation: type ac synchronous generator of electrical control system design: all start at the same time of the total power of the electromagnet on startup needed (VA); On the type of should according to the startup has sucked squirrel cage induction motor in electronics to calculate. Transformer capacity required, shall be calculated by the above two type of the capacity of the decision.

Wire tube (tube, PVC tube) installation does not conform to the requirements

 Motor parts electric motor fan cover 

Specifications
1.Customised 
2. good quality 
3. 20 years manufacturing experience 
1, the phenomenon of (1), cable pipe multi-layer overlap, there are higher than that of the temple square steel bar gluten. (2), wire and tube side by side for more than 2 or 2 root clingy. (3), electrical, pipe buried depth of the wall is too shallow, and even buried outside the walls of the powder layer. Pipe die bending, folding, dent phenomenon. (4), wire and tube into the distribution box, pipe in mouth not to fill, in the show is too long; Nozzle is not level off, different length; Nozzle without skirts; Not locked. (5), embedded PVC wire pipe not with stopper head plug, but with the clamps bend mouth flat. 2, (1) analysis of the causes, generator construction personnel to the related specifications are not familiar with, careless attitude toward work and convenience, not according to the provisions. Construction administrator management does not reach the designated position. (2), architectural design layout and electrical professional cooperation is not enough, cause more narrow line pipe 3 phase induction motor through the same plane. 3, preventive measures (1), and to strengthen the quality control of construction process of site construction personnel, targeted training of workers; Management personnel must be familiar auto spare parts with related specifications, strict management. 


three phase induction electric motor Y series B35 1.5KW 2.2KW 37KW 75KW

Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years 
(2), squirrel cage induction motor three phase induction motor small diesel engine wire and tube multi-layer overlap generally appeared in the high-rise building public channel. When tower house each layer has six sets of the above, the proposal had better use the public corridor of smallpox condole top civil ACTS the role of alternator generator way, so most of the electrical professional into the door line can be directly above the ceiling installation slot to houses. Also can adopt the way of increasing public aisle floor, to hidden many wire and tube. When electrical construction professionals cloth tube should reduce overlapping layers of line pipe at the same point. (3), wire layer cannot clingy, side by side, such as the construction of it is difficult to clearly separate, can be used to separate the small concrete. (4), wire inside the tube into a brick wall, the distance from the surface should not be a boy of 15 mm, to "horizontal flat vertical pipe laying. (5), wire and acmotortrading.blogspot.com tube bending radius (dark bury) should not be less water pump price than 10 times the pipe diameter, pipe bend to bend with pipe bender or kink holding level off is smooth, does not appear the phenomenon such as flat folding, dent. (6), wire and tube into the distribution box should level off, the length is 3 to 5 mm, tube with a sheath and lock box shell. Distribution box into the floor type wire tube, pipe distribution box should be higher than that of base surface is 50-80 - mm. (7), embedded PVC wire tube, it is prohibited to the nozzle with forceps clip flat, curved, fist application conforms to the pipe diameter PVC pipe stopper head to block, and adhesive binding firmly.

Two phase stepper motor wiring method and the current setting question 2

So you have A stepper motor drives the output current can not be adjusted of the permanent (refers to two phase full bridge output drive, such as net friend common TA8435, TB6560 and A3977 driver chip), lamination machine how to select the stepper motor is very important, if your drive is 2 A, try choosing of two phase four wire 2 A motor (such as second-hand Japanese Oriental motor are mostly the) if you choose, the six wire motor will have to choose A nominal current as 2/0.7 = 2.9 A (about) of motor. In order to better play to the role of the drive. But if you choose the output driver is half bridge (such as SLA7062M, SLA7026 drive chip), it can single phase motor only pick up, the water pump price six wire motor drive current and motor nominal current is the same. But the permanent magnet generator drive at present very few, the efficiency is low. 

Lines to for six or eight spare parts stepping motor phase winding adopts parallel operation, can play a maximum wholesalemotor.blogspot.com output torque and diesel generator set show a good dynamic performance, six line motor is unable to connect in parallel form, actually already single phase motor in internal together, the public end of the series is the center tap. Only eight line phase coil of the motor can be used in parallel. If we can open the machine back cover, take a look at the inside connection structure, can change, make six line motor into eight line, so it can be used in parallel, but electric generator not all of the six lines of motor can be changed, only can see the attachment in the form of joint from behind the motor changes, and some motor is solder joint, the restructuring skills will be needed. I have been restructured for stepper motor, the series can also be used generator in parallel, the parallel when using phase current is 1.4 times that of the original high speed performance is greatly improved, torque is increased, too.

Wire and cable load output voltage is normal, after the loading of overload or over-current electric motors

small motor spares suppliers of motor parts 

Specifications
1.20 years fan&motor manufactruer 
2.We can open mould&punch&diecast&finish&winding 

3.competitive price,high quality 
 This kind of situation is usually due to improper parameter Settings or drive circuit aging, module damage caused. Take time to add cooling fluid method fridge?? Refrigerator take time AC motor to add liquid cooling method ac synchronous generator For refrigeration equipment repair, time is the second 3 phase induction motor step of the general fault maintenance. The first is to suppress (not including the compressor or change tube) in determining the pipeline without leakage, the next step is to fit. There are two commonly used methods: 1, use the vacuum pump. You can also use a compressor to replace www.dongfeng-motor.com the vacuum pump. Time is longer than with the vacuum pump is a few longer, because of the relative likelihood () compressor exhaust two (amount) to some smaller than vacuum pump. On the fridge process pipe connected to a job with magnetic generator a pressure gauge valve, one ac synchronous generator head welding on the compressor, the other end with a liquid pipe connection on the vacuum pump, open the table method (valve) the door, start the vacuum pump or diesel engine external compressor, start time, when there ac motor is no gas discharge vent on the vacuum pump, take time to complete.

Motor wiring

 Cast iron ac induction electric fan motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
3. Type: iron body of AC electric motor
Motor wiring mantra: www.dongfeng-motor.com "1.5 plus two, plus three" 1.5 "after the four plus four, six plus six," "increasing after 25 plus five, after 50 minus five" 102 conductor, the best number "the mantra diesel engine is equipped with wire directly based on the three-phase 380 v ac motor capacity." 1.5 plus two "said 1.5 was copper, plastic wire, can go with 3.5 kW and the following motor. Because of the 4 kW motor selection of close to 3.5 kW use scope, and the formula has certain allowance, so the quick table 4 kW motor under the selected conductor take 1.5 was." After 2.5 plus three ", auto spare parts "four plus four", said was 3 phase induction motor 2.5 and 4 was the copper plastic wire to auto spare parts respectively 5.5 kW, 8 kW motor." After six plus six, "said from the beginning of the 6 was, with the" increase 6 kW motor. "that squirrel cage induction motor was can match 12 kW, choose similar specification with 11 kW motor. 


AC motor aluminum 2800 rpm motor fan cover 

Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 

4. AC motor 
10 was 16 kW, choose similar specification with 15 kW motor. 16 was 22 kW acmotor2.blogspot.com motor can match. The middle and 18.5 kW motor, also copper plastic line 16 was chosen." After 25 plus five ", it is said from 25 was addend from six to five. 25 was 30 kw electric motor can match. 35 was 40 kw can match, choose similar diesel generator set specification with 37 kw motor." Increasing after 50 minus five ", it is said that since 50 was made up into a reduced, and it is increasing step by step to lose five. 50 was 45 kw motor can be produced (50-5). 70 was can match up to 60 kw (70-10), select similar specification is equipped with 55 kw electric motor. 95 was can match 80 kw (95-15), choose similar specification with 75 kw motor." 102 conductor, with the number ", magnetic generator it is said that 120 was the copper plastic wire can match 100 kw motor, phase selection specifications namely 90 kw electric motor.

Current transformer selection and calibration accuracy

Accuracy refers to within the scope of the provisions of the secondary load, a current of the maximum error when rating. China's current transformer accuracy and error limits as shown in table 1, for different measuring instrument, should choose different accuracy of current transformer. The choosing principle of accuracy: billing measurement with the current transformer is the accuracy of 0.2 ~ 0.5; Used to monitor the size of the load current in outlet and inlet line of each loop current meter should choose 1.0 3.0 level current transformer. In order to guarantee the accuracy of error is less than specified value, generally also check current transformer secondary load (ei), transformer secondary load S2n S2 is not greater than the rated load, the selected accuracy can be guaranteed. The accuracy of calibration formula: S2 S2n or less. Secondary loop load l: www.dongfeng-motor.com depends on the value of the secondary loop impedance Z2 is: S2 electric motor 12v 500w = I2n2 ︱ Z2 ︱ material I2n2 (∑ ︱ Zi ︱ + + RXC RWl) or S2V1 material ∑ Si + I2n2 (RWl + RXC), Si, Zi as the secondary circuits of the instrument, the rated load and impedance of the relay coil RXC for all joints in the secondary loop, contact contact resistance, generally take 0.1 Ω, RWl for the secondary loop wire resistance, calculation formula is: the RWl = LC/(r (S). Type, r for the conductivity of the wire, copper wire 53 m/r = (Ω was), aluminium wire r = 32 m (Ω was), S for cross-sectional area (was), LC for the calculation of the wire length (m). A multitude of transformer to instrument one-way length of L1, is: L1 transformer is star. LC = L1 two-phase V wiring. 2 a phase l1 type connection. The accuracy of current transformer used for the relay protection has 5 p and l0P. Protection level of accuracy is based on accurate rating limit down an electric epsilon % of the maximum error of the composite to nominal (such as 5 p corresponding epsilon % = 5%). So-called rated accurate limit a rated current is a current Induction motor is a current multiples (n = I1 small three phase motor / I1n), also known as rated limit coefficient accurately. Is asked to protect by current transformer in the range of possible, its biggest composite error is less than epsilon % value.

DBJ08-20-98 household electric equipment electric motor should meet the following standard

 Stator And Rotor ac induction motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
3. Material: silicon steel 
24, empty equipped. We now most of the electrician fully match, computing power, not the empty open far very worthy, what is the purpose of the open? diesel engine Is tripped when overload protection appliances and 3 phase generator induction motor circuit, so big that he has to jump do you use? Don't. Through all these 1, 2 years of propaganda is better, before is completely 3 phase induction motor random. Actual calculation is very simple, is the ampere = power/voltage. If done in strict accordance with the electrical specification, general 1.5 wire with 10 a; 2.5 wire diesel generator set with 16 a; With 20 a four square wire. Open frequent trip also is bad, of course, we should consider the single phase induction motor current voltage instability or improper open design, synchronous generator therefore, can according to the distribution of the above, can also according to acmotor2.blogspot.com a high level, with 16 a 1.5; 2.5 with a 20; Four square with a 25 is feasible. As for the total open, in 120 ~ 130 in the following set of house, 2 p40a is enough, also with the high, into the household electric meter is how much, you are not afraid of electric meter was burned?

Wire connection, connection quality and color code is not in conformity electric motor with the requirements

AC motor aluminum 2800 rpm motor fan cover 
Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 

4. AC motor 
1, phenomenon (l), do not use copper joint multi-strand wire, directly into a "sheep on the rim of the eye", but not enlarge tin. (2), distribution box and switch, socket, terminal at the connection of a terminal connected to a few wire. (3), thread bare, wire arrangement is not neat, without a bandage. (4), three phase conductor, zero line (N), grounding protection line (PE) AC motor color ac motor code, or confusion. 2, root cause analysis (l), construction personnel did not master conductor wiring craft and technology. (2), material buyer didn't save the construction in accordance with the requirements for all kinds of wire color and quantity, or construction management personnel in order to save material and mix. 3 (l), preventive measures, strengthen construction personnel to the specification of the learning and skills training. (2), multiple strands of wire connection, the single phase motor application of pressure welding galvanized copper joint, try not to do "sheep on the rim of the eye", such as do, should be uniform in China diesel generator set tin. 


CCC CE ROHS UL VDE Certification and 115/120 V AC Voltage 220V&120V induction motor

Specifications
1. Specifications1.3-phase asynchronous motors 
2. IEC standard 
3. OEM 
4. Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54
(3), on the terminal and the terminal wire connection should be only 1 piece, if you want to pick up two root, add flat shim between; Don't allow more than 3 root connection. (4), wire arrangement to horizontal flat vertical, strip thread should maintain each thread length is consistent, should not have exposed conductors after wires into terminal; Copper joints and the insulation of the wire connection to use the same as the wire color adhesive bandage. (5), material procurement staff magnetic generator must according to the site need to match all sorts of color of wires. (6), construction personnel should clearly distinguish between phase line, zero line (N), grounding protection line (PE) and to distinguish the color target, the effect of the PA phase - yellow, B - green, generator set C phase - red; When the single-phase acmotor2.blogspot.com general appropriate USES red; Zero line magnetic generator (N) shallow blue or blue; Ground fault protection line (PC) must use yellow green double color wires.

The requirements of the asynchronous motor startup and types

 The requirements of the asynchronous motor starting 1, starting torque of motor is large enough. 2, on the premise of certain size starting torque, starting current as small as possible. 3, starts the required equipment is simple, easy to operate. 4, rotor power loss in the process of start as small as possible. Squirrel-cage asynchronous motor start. Direct start that start with voltage on the stator winding of the motor rated voltage. Three-phase asynchronous motor direct start (a) meet the conditions of electric motor parts 1, capacity under the 7.5 KW motor can be used. 2, motor at starting moment www.dongfeng-motor.com caused by the power grid voltage diesel generator set drop is not more than 10% of the power supply voltage is normal, for not often small diesel engine start three phase induction permanent magnet lamination machine generator motor the motor can be up to 15%. 3, available empirical formula rough estimates whether the permanent magnet generator motor can electricalmotor1.blogspot.com be directly started. Advantages: the boot device is electric generator simple, the startup time is short, starting operation simple, reliable, the cost is low. Disadvantages: the motor and power grid has a certain impact

The working principle of the servo motor

Electric Motors 1 HP 3PH

Specifications
1. Shape: squirrel cage
2. CE.ISO CCC 
3. Side Terminal Box 
4. Free Foot Mounting 

5. 100% copper wire 
Servo positioning www.facebook.com/guohong.trading by pulse, basically can understand it, servo motor to receive a pulse, will rotate one water pump pulse of the corresponding point of view, so as to realize the displacement, because, the function of the servo motor itself has a pulse, generator so each rotation Angle of a servo motor, send out the corresponding number of pulses, in this way, and the servo motor to accept pulse forming the echo, or closed loop, as a result, the system will know how many pulses sent to the servo motor, how much charge pulse back again at the same time, in this way, can be very precise control of the motor rotation, so as to realize accurate positioning, can reach 0.001 mm. Divided into the dc three phase induction motor servo diesel generator set motor small diesel engine with brush and brushless motors. 


Cast iron ac induction electric fan motor parts 

Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Type: iron body of AC electric motor
Brush motor of low cost, simple structure, big start torque, wide speed range, easy control, need maintenance, but the maintenance is convenient (in carbon brush), electromagnetic interference, has asked for the environment. So it can be used in ordinary industrial and civil occasions is sensitive to the cost. Brushless motor is small in size, light weight, magnetic generator the output is big, fast response, high speed, small inertia, the single phase motor rotation smooth, stable torque. Intelligent control is complex, easy to implement, the flexible electronic commutation, can square wave or sine wave phase commutation. Motor free maintenance, high efficiency, low operating temperature, electromagnetic magnetic generator radiation is very small, long life, can be used for all kinds of environment.

PWM technology influences the characteristics of motor

Stator And Rotor ac induction motor parts 

Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Material: silicon steel
After the last illustrates the chopper battery and motor current is no longer the same physical process, the following mathematical expression is used to demonstrate the PWM influences the characteristics of motor. Motor PWM control theory is a familiar formula (power tube as an ideal switch device, it does not auto spare parts cause obvious errors), namely 3 phase induction motor the VD = rho VB (1), DVD - the average voltage of the motor VB - battery voltage. As long as the filter capacitance is large enough, the battery internal resistance is small enough, VB can be considered to be stable. Rho - control pulse duty ratio (0 ≦ rho ≦ 1). Chopper state rho for a decimal. (1) show that there are chopping, voltage of the rotor motor is reduced, this is the principle of speed regulation. Chopper is stable after, motor current waveform is cyclical approximate triangular wave, can be mathematically proved that the motor current average ID (if for the brushless motor, ID should be interpreted as the average of the conduction phase within the current). ID = IB/rho or IB = rho ID (2) that the average - IB battery current in motor current be amplified to the battery current IB 1 / rho times. With the current of battery, transform the big current of motor or motor torque, this is one of the important role of the controller, so, sometimes referred to as the converter controller. 


Y2 series high power China ac motor

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration 
At this time, acmotor2.blogspot.com the motor of the electric potential equation for VD R0 = ED + ID * (3) in R0 - motor diesel generator set coil resistance ED - the counter electromotive force. ED is proportional to motor speed locked-rotor when ED is 0, if the current limit of the controller is stable chopper technology, magnetic generator the above various remains valid. Type of motor can be obtained by (3) locked-rotor current IDmax, reuse (1) get IDmax = VD/R0 = rho t VB/R0 = rho tIB0max (4), IB0max = VB/R0 -- without stalling a motor current controller, also single phase induction motor called full pressure starting current rho t - design decision control pulse duty ratio. This shows that the maximum current of a motor is unlimited flow of rho t times, be reduced, which is exactly what we expect of current limit. Using (2) and (4), can be obtained after the battery generator current stable value (not the maximum reasons shall be described below), the motor current and full pressure maximum starting current relation between IBfinal = IDmax alternator generator rho t = 2 t IB0max rho (5) ac induction motor of these three values are measurable, the above relationship can also be verified. When rho = 1, the equivalent of the motor directly connected to the battery, so (4) into a VB R0 = EB0 + IB0 * (6) (3) and (6), respectively, described the motor is chopping and no chopping the potential equilibrium equation of state of the two. (6) of the motor current and back emf with index 0, with the state of the chopper motor current and back emf value is not the same.