TY - GEN
T1 - Online Inverter Nonlinear Compensation Method Based on Comprehensive Nonlinear Factor Analysis
AU - Deng, Lirong
AU - Zhang, Haifeng
AU - Sun, Peiru
AU - Zheng, Shiqiang
AU - Chen, Baodong
N1 - Publisher Copyright:
© 2025 Korean Institute of Electrical Engineers Electrical Machinery and Energy Conversion Systems Society.
PY - 2025
Y1 - 2025
N2 - In permanent magnet synchronous motor (PMSM) drive systems, inherent inverter nonlinearities cause current distortion and output voltage fluctuations, which in turn lead to increased current harmonics, aggravated torque ripple, and reduced system efficiency. To address this issue, this paper develops a more precise inverter output voltage distortion model by analyzing the instantaneous switching states of the upper and lower power devices, explicitly considering the effects of device voltage drops and parasitic capacitance. Based on this model, an online compensation method is proposed. A synchronous frequency extractor is utilized to preprocess the current and obtain its polarity. Compared with conventional methods, the proposed method enables accurate modeling of voltage distortion and significantly enhances compensation accuracy. The effectiveness of the proposed compensation strategy is verified through simulation results.
AB - In permanent magnet synchronous motor (PMSM) drive systems, inherent inverter nonlinearities cause current distortion and output voltage fluctuations, which in turn lead to increased current harmonics, aggravated torque ripple, and reduced system efficiency. To address this issue, this paper develops a more precise inverter output voltage distortion model by analyzing the instantaneous switching states of the upper and lower power devices, explicitly considering the effects of device voltage drops and parasitic capacitance. Based on this model, an online compensation method is proposed. A synchronous frequency extractor is utilized to preprocess the current and obtain its polarity. Compared with conventional methods, the proposed method enables accurate modeling of voltage distortion and significantly enhances compensation accuracy. The effectiveness of the proposed compensation strategy is verified through simulation results.
KW - inverter nonlinearities
KW - parasitic capacitance
KW - Permanent magnet synchronous motor (PMSM)
KW - voltage distortion model
UR - https://www.scopus.com/pages/publications/105032853717
U2 - 10.23919/ICEMS66262.2025.11317510
DO - 10.23919/ICEMS66262.2025.11317510
M3 - 会议稿件
AN - SCOPUS:105032853717
T3 - ICEMS 2025 - 28th International Conference on Electrical Machines and Systems
SP - 2211
EP - 2215
BT - ICEMS 2025 - 28th International Conference on Electrical Machines and Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th International Conference on Electrical Machines and Systems, ICEMS 2025
Y2 - 16 November 2025 through 19 November 2025
ER -