Desenvolvimento de rotinas de testes automatizados para avaliação de desempenho de PMSM drives através de interface HIL

Abstract

This paper aims to validate the use of automatic test routines in HIL to evaluate performance of PMSM drivers. Therefore, a non-sinusoidal PMSM model is implemented, driven through six-steps commutation. In addition, the conduction and commutation losses of the inverter are determined, in order to use the efficiency as a comparison parameter to generate a report for benchmarking controllers. The six-step 120°strategy is used to drive the PMSM, which determines the order of commutations of a three-phase inverter through the information of the machine rotor position obtained by Hall effect sensors. The Test Driven Design methodology was used to compare the efficiency of different controllers. Therefore, the conduction and commutation losses of the inverter were determined, taking into account the junction temperature of the IGBTs and their thermal model. From this, the power dissipated in the inverter was used to define the efficiency of the system. An automated test routine was established to benchmark six current and speed controllers in terms of efficiency and rotor speed.