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Implementation of Novel Control Algorithm for Quasi-Z-source Three-level Inverter Based on Virtual Space-vector PWM
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Jin CHAI1, Tong LIU2, Weisheng WANG3, Alian CHEN4
Journal of Power Supply | 2025, 23(2) : 57 - 66
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Journal of Power Supply | 2025, 23(2): 57-66
DC-AC Inverters
Implementation of Novel Control Algorithm for Quasi-Z-source Three-level Inverter Based on Virtual Space-vector PWM
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Jin CHAI1, Tong LIU2, Weisheng WANG3, Alian CHEN4
Affiliations
  • 1 Engineering Training Center, Shandong University, Ji’nan 250061, China
  • 2 School of Electrical Engineering, Shandong University, Ji’nan 250061, China
  • 3 Shandong Aotai Electric Co., Ltd., Ji’nan 250104, China
  • 4 School of Control Science and Engineering, Shandong University, Ji’nan 250061, China
Published: 2025-03-30 doi: 10.13234/j.issn.2095-2805.2025.2.57
Outline
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The coupling between the boost control and neutral-point voltage balance control of a quasi-Z-source three-level inverter seriously limits its control performance. To solve this problem, a neutral-point voltage balance control strategy based on a virtual space-vector pulse width modulation method is proposed. The neutral-point voltage balance control is realized through a closed-loop control of the DC-bus capacitor voltage, and the low-frequency fluctuations in the neutral-point voltage are eliminated. Meanwhile, a constant shoot-through boost modulation strategy is employed, which avoids the adverse impact on the neutral-point voltage and guarantees an ample boosting capacity of the quasi-Z-source network. Finally, simulation and experimental results verified the validity of the proposed control strategy.

Quasi-Z-source three-level inverter  /  neutral-point voltage balance  /  virtual space-vector pulse width modulation
Jin CHAI, Tong LIU, Weisheng WANG, Alian CHEN. Implementation of Novel Control Algorithm for Quasi-Z-source Three-level Inverter Based on Virtual Space-vector PWM[J]. Journal of Power Supply, 2025 , 23 (2) : 57 -66 . DOI: 10.13234/j.issn.2095-2805.2025.2.57
  • National Natural Science Foundation of China(U2006222)
  • National Key Research and Development Program of China(2022YFB2402903)
Year 2025 volume 23 Issue 2
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.2.57
  • Receive Date:2023-12-29
  • Online Date:2025-07-01
  • Published:2025-03-30
Article Data
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History
  • Received:2023-12-29
  • Revised:2024-02-06
  • Accepted:2024-03-05
Funding
National Natural Science Foundation of China(U2006222)
National Key Research and Development Program of China(2022YFB2402903)
Affiliations
    1 Engineering Training Center, Shandong University, Ji’nan 250061, China
    2 School of Electrical Engineering, Shandong University, Ji’nan 250061, China
    3 Shandong Aotai Electric Co., Ltd., Ji’nan 250104, China
    4 School of Control Science and Engineering, Shandong University, Ji’nan 250061, China
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表12种不同金属材料的力学参数

Family
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Number of
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种数
Number of
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Number of
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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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