Effect of Harmonic Current Suppression on Iron Loss of IPMSM Using Repetitive Perfect Tracking Control

Permanent magnet synchronous motors (PMSMs) have wide applicability owing to their many advantages. For efficient driving of PMSMs, a number of high-efficiency control methods have been developed. However, few studies have discussed the relationship between the tracking characteristics to the current command and driving loss. Here, we propose using the RPTC, which is a digital controller with high tracking performance, as the current controller for reducing the iron loss. The RPTC can suppress the periodic disturbances; therefore, the iron loss caused by the harmonic current in the input current is reduced. Simulations confirmed that the presence or absence of the harmonic current affects the iron loss reduction. Experiments also showed that RPTC reduced the extent of the iron loss in interior permanent magnet synchronous motors (IPMSMs).