期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 2, 页码 1259-1263出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3006536
关键词
Commutation; Brushless DC motors; Robot sensing systems; Permanent magnet motors; Delays; Brushless direct current (BLDC) motor; commutation errors; sensorless; virtual neutral voltage
资金
- Seed Foundation of Innovation and Creation for Graduate Students in Northwestern Polytechnical University [ZZ2019173]
A novel compensation method for commutation errors in brushless direct current (BLDC) motors is proposed in this paper, which calculates compensation time and obtains start-stop signals through virtual neutral voltage, achieving faster compensation speed and higher precision without the need for sensors.
Precise commutation signal is the prerequisite for the efficient operation of brushless direct current (BLDC) motors. However, the low-pass filter, nonideal current, circuit, and software retarding can bring about the commutation errors that will deteriorate the performance of BLDC motors, for example, resulting in larger current ripple and noise. To eliminate the commutation errors quickly and improve the performance of the motor, a novel compensation method is proposed in this letter. The compensation time is calculated by a counter. And the start-stop signals of the counter are obtained by the virtual neutral voltage. The proposed method requires none voltage or current sensor and has a faster compensation speed and higher precision than the traditional compensation method based on the integration of virtual neutral voltage. The effectiveness of the proposed method is verified by comparable exp eriments using an 80-W BLDC motor.
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