Efficient Analysis of Harmonic Losses in PWM Voltage Source Induction Machine Drives with Modelica
نویسندگان
چکیده
This paper presents an approach to calculate the copper and core losses caused by harmonics of the PWM of a voltage source inverter. For the analysis some models of the Smart Electric Drives (SED) library, and additionally, a Modelica library for modeling AC circuits by means of electric time phasors, are used. With the proposed analysis the influence of space phasor PWM signals on the machine efficiency is investigated. A Modelica model of a speed controlled induction machine drive working at different load points and different switching frequencies is presented. The results of the simulation are compared and discussed.
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