218472 ⎘
Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using ac to ac converters without intermediate conversion to dc varying the frequency by omitting half waves
Method and device for operating an electric motor
#2Divided phase AC synchronous motor controller
#3Speed control of variable-speed multiple-phase motors
#4Divided phase AC synchronous motor controller
#5Power frequency converter and associated method
#6Method and assembly for operating synchronous motors
#7Speed control of variable-speed multiple-phase motors
#8Method and device for operating an asynchronous motor with increased efficiency
#9Method for the operation of synchronous motors, and associated device
#10Refrigerator and operating method thereof
#11Soft starting method and system thereof in the way of wave-skipping with stepped frequency and stepless voltage regulating for a motor
#12Apparatus for controlling speed of fan motor of air-conditioner
#13Barrier movement operator speed control