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Low-speed Sensorless Permanent Magnet Synchronous Motor Inverter Based on Adaptive Dead-time Compensation Strategy
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Kun ZHANG1, Hang ZHANG  Member, CPSS2, Zhe CHEN3, Hui MA1, Yukun LEI  Student Member, CPSS2, Guangzhao LUO3
Journal of Power Supply | 2026, 24(8) : 240 - 250
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Journal of Power Supply | 2026, 24(8): 240-250
• Motor Drives and Control •
Low-speed Sensorless Permanent Magnet Synchronous Motor Inverter Based on Adaptive Dead-time Compensation Strategy
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Kun ZHANG1, Hang ZHANG  Member, CPSS2, Zhe CHEN3, Hui MA1, Yukun LEI  Student Member, CPSS2, Guangzhao LUO3
Affiliations
  • 1.Nanjing Engineering Institute of Aircraft Systems, AVIC/Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing 211106, China
  • 2.School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
  • 3.School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Published: 2026-08-30 doi: 10.13234/j.issn.2095-2805.2026.8.240
Outline
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First, according to the working characteristics of pump-type loads of an aero permanent magnet synchronous motor (PMSM), the sensorless operation of the motor is realized based on a nonlinear flux observer, and an improved time-delay compensation strategy is proposed to obtain the command voltage. Due to the influence of the inverter’s nonlinear time-delay, the phenomena such as an increase in the dq-axis current coupling effect and the time-delay of estimated rotor position will occur in the feedback current, which degrade the sensorless control performance. Then, to address this issue, an adaptive disturbance observer is designed to obtain the q-axis disturbance voltage caused by the inverter’s nonlinear time-delay under full-speed SVPWM modulation. Finally, the compensation time estimated in real time is obtained under the current control strategy with id=0, which is further equivalent to the three-phase voltage compensation value acting on the given three-phase voltage. The proposed nonlinear time-delay compensation strategy for inverters put forward was verified by experiments, and results show that the proposed strategy can effectively improve the sensorless control performance of the nonlinear flux observer at low speeds.

Permanent magnet synchronous motor (PMSM) drive  /  nonlinear flux observer  /  nonlinear time-delay of inverter  /  adaptive compensation
张坤, 张航中国电源学会会员, 陈哲, 马辉, 雷昱坤中国电源学会学生会员, 骆光照. 低速无位置传感器运行的永磁同步电机逆变器自适应死区补偿策略. 电源学报, 2026 , 24 (8) : 240 -250 . DOI: 10.13234/j.issn.2095-2805.2026.8.240
Kun ZHANG, Hang ZHANG, Zhe CHEN, Hui MA, Yukun LEI, Guangzhao LUO. Low-speed Sensorless Permanent Magnet Synchronous Motor Inverter Based on Adaptive Dead-time Compensation Strategy[J]. Journal of Power Supply, 2026 , 24 (8) : 240 -250 . DOI: 10.13234/j.issn.2095-2805.2026.8.240
  • National Natural Science Foundation of China(52177059; 52007151)
  • Key Research and Development Plan of Shaanxi Province(2023-YBGY-401)
Year 2026 volume 24 Issue 8
33
4
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.8.240
  • Receive Date:2024-11-04
  • Online Date:2026-10-29
  • Published:2026-08-30
Article Data
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History
  • Received:2024-11-04
  • Revised:2024-12-26
  • Accepted:2025-01-05
Funding
National Natural Science Foundation of China(52177059; 52007151)
Key Research and Development Plan of Shaanxi Province(2023-YBGY-401)
Affiliations
    1.Nanjing Engineering Institute of Aircraft Systems, AVIC/Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing 211106, China
    2.School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
    3.School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
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占总种数比例
Percentage of
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属
Genus
种数
Number of
species
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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