Comparison of switched-mode rectifier and inverter control of surface PM generators

Abstract

This paper compares the performance of surface PM generators when operated with a switched-mode rectifier and an inverter. An analytical model including losses for the surface PM generator and power electronics controller is developed and validated against simulations and experimental results. This is used to generate efficiency maps as a function of output power and speed for the generator operating with four control methods: rectifier, conventional and phase advance controlled switched-mode rectifiers, and an inverter. The efficiency maps and the required control parameters to achieve maximum efficiency are presented and discussed.