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Electric motors driven by pulse-width modulated (PWM) waveforms exhibit different power loss and heating characteristics than line-fed motors. Experimental results indicate that motor losses and heating increase as the drive switching frequency decreases. Motor power losses for low switching frequencies are described, and if the increase in motor power loss is high enough such that motor overheating...
Active front end rectifiers (AFE) are used widely in industrial area. For an AFE designer, LCL filter and power switches are two of the most critical components. Among the LCL filter components, the main inductor connect to rectifier power switches is the biggest and most expensive. This paper evaluates the design trade-offs of AFE rectifier and LCL filter under different PWM control method. The losses...
LCL filter and power switches are the most critical parts of high power active front end (AFE) rectifier designer. Among the LCL filter component, the main inductor located at the rectifier side is the most expensive and bulky component. This is because it is exposed to PWM voltage waveform and induce much higher core losses. This paper proposes a way to analyze the core losses of main inductor. The...
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