Application of the Selective Harmonic Eliminated PWM Algorithm in High-Speed Electric Drive Based on Three-Phase Voltage Source Inverter

The paper focuses on the implementation of selective harmonic eliminated (SHE) PWM applied to the three-phase voltage source inverter (VSI) to supply synchronous machine with permanent magnets. Theoretical basis of the obtaining of the three-phase VSI switching angles, that provide given spectrum of the output voltage is expounded. Values of the switching angles are derived by the Newton-Raphson iterative method. Mathematical model of permanent magnet synchronous motor drive system with VSI is designed. Simulation and comparison of the sinusoidal pulse width modulation (SPWM) and SHE PWM algorithms of power VSI is present.