Control of Boost Converter Module for Open-End Winding Permanent Magnet Motor Based, Dual Inverter Drive

This work explains how to control a boost converter module to vary the DC link voltage of a dual inverter motor drive. Doing so is shown to extend the speed range of an Open-end Winding Permanent Magnet Synchronous Motors (OWPMSM) compared to flux weakening control, enabling the use of more efficient and power dense high-speed motors. Furthermore, in agreement with results in literature for more conventional Permanent Magnet Synchronous Motors (PMSM), the boost converter modules enable the use of maximum torque-per-ampere (MTPA) control at all speeds while exhibiting constant power behavior above base speed. Compared to when using flux weakening control, this increases available torque while lowering conduction losses in the motor at high speeds.