New technology of double speed motor

Because of the pump station drainage standard is low, and the drainage area and large variation range of water level, so often occurs in the pump station has been built for super lift was forced to stop. For this kind of pumping station renovation, such as simply to replace the existing high lift water pump water pump, although is can solve the problem of pumping station super head, but is likely to accompany a pump under low head gravely deviates from the high efficient www.facebook.com/dongfeng.motor area, causing new problems such as cavitation and vibration. Two-speed motor is new technology on the basis of the original water pump, by changing the line will be converted into motor with high and low two two-speed motor speed. Allows the unit to the there was a high lift pump station, corresponding to run at high speed, low in pump motor part station head, corresponding to the low speed running, which can run in the pump station super lift requirements under the premise of guarantee the magnet generator pump running in high efficient area for a long time. At present, the double-speed motor has got application in dongshen water supply project, at the same time by wuhan university of hydraulic and electric engineering of pump and pump station laboratory under the support of the department of the ministry of water resources, also have finished the old motor into two-speed motor research topic (the technology has been declared national patent), and using the new technology of double speed motor pump station created good conditions. Old motor modification two-speed motor method is to remove the old motor winding, and according to the original polar logarithmic nested new winding. When nested new winding, a new tap, derivation of new winding coil through the tap can be back together, so that the motor of the logarithm change, so that the motor has two logarithm, namely has the function of double speed.