The use of frequency inverter enables a continuous control of the motor speed and provides constant torque in the whole speed range. The rating for variable speed induction motors need to be selected based on the following aspects: Heating due to harmonic content of inverter waveform.Reduced ventilation due to low speed operation.Constant torqueConstant Power Variable torque requirement of load.Other limiting factors e.g. maximum permissible motor speed, ambient temperature, altitude etc.While variable speed drives provide highest energy saving for variable torque (Centrifugal pump, fan) applications, for constant torque and constant power application, Variable speed drives offer significant process control improvements. Basic inverters permit operation over a typical 20:1 speed range. With closed loop vector control the effective range may be increased to 1000:1.
Aakash Powertech Pvt Ltd. (Aakash Powertech Private Limited)
501-505 A Wing, Express Zone, Western Express Highway, Malad (East), Mumbai - 400097., Malad East, Maharashtra
Share us via
Write a Review
