Abstract
This article proposes nonregenerative braking algorithm for the permanent magnet synchronous motor (PMSM), suitable for low-cost drive equipped with the front-end diode rectifier. The algorithm is based on the selection of braking trajectories with maximum iron and copper losses, while keeping dc-bus voltage at the acceptable level and with operational limits satisfied. The braking scheme is not calculation intensive and is not prone to PMSM parameter variations; thus, it is suitable for inexpensive microcontroller and PMSM, both native for low-cost drives. The algorithm is tested and validated under a variety of operating conditions, using a typical high-speed PMSM used in home appliances.
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