Investigation of the modulation index tuning advantages for voltage source inverters with adjustable DC-bus voltage
Résumé
This paper demonstrates that the possibility to regulate the modulation index of the Pulse-Width Modulation (PWM) scheme by adjusting the DC bus voltage could improve the Voltage Source Inverter (VSI) performances by improving THD of the phase voltages, reducing the temperature of the DC link capacitors, increasing the efficiency and decreasing the impact of the dead-times distortions. Theoretical derivations are validated experimentally on inductive load as well as on permanent magnet synchronous machine.