Decentralized Linear Permanent Magnet Synchronous Motor Control Using Harmonic Injection SPWM

Abstract:

This paper proposes a novel SPWM with harmonic injection method to improve the utilization ratio of bus voltage of decentralized LPMSM. In a traditional SPWM, usually, the phase voltage order is restricted independently, which results in that the bus voltage can not be used efficiently, produces voltage vector direction error, and lowers response frequency of current cycle. To solve this problem, the proposed method adopts pulse width modulation control technology with active harmonic injection to enhance the utilization ratio of bus voltage, and the theoretical analysis has been conducted from the potential difference point of view. The final results show that this method can enhance the utilization ratio of bus voltage of the high power LPMSM greatly, and improve current control, under the premise that voltage vector accuracy is not affected. This result confirm the validity of the proposed method.

• Periodical: Advanced Materials Research (Volumes 562-564)
• Pages: 1479-1482
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.562-564.1479
• Online since: August 2012
• Authors: Zi Li Tang, Shuang Hui Hao, Ming Hui Hao
• Keywords: Autonomous Decentralized System, Harmonic Injection, LPMSM, Pulse Width Modulation (PWM)

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