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Novel Power Balance Modulation Strategy for Hybrid Cascaded Nine-level Inverter
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Jun GU, Zhenguang SU  Student Member, CPSS, Weijian WANG, Haoran SUN, Zhongming SONG
Journal of Power Supply | 2026, 24(3) : 58 - 66
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Journal of Power Supply | 2026, 24(3): 58-66
• Power Converter Modeling and Control •
Novel Power Balance Modulation Strategy for Hybrid Cascaded Nine-level Inverter
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Jun GU, Zhenguang SU  Student Member, CPSS, Weijian WANG, Haoran SUN, Zhongming SONG
Affiliations
  • School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan 232001, China
Published: 2026-03-30 doi: 10.13234/j.issn.2095-2805.2026.3.58
Outline
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The hybrid cascaded nine-level inverter can output more levels using fewer H-bridge units. Under the mixed carrier cascaded modulation strategy, the quality of output voltage waveform is higher, but the output power is not balanced, which will lead to uneven heating and shorten the service life of the equipment. Under the mixed carrier phase-shift modulation strategy, the power self-balancing can be completed, but the power balancing time is too long. Aimed at these problems, a novel hybrid modulation strategy is proposed, where the high-voltage unit is modulated by a stepped wave and voltage constraints are added, and the carrier wave of the low-voltage unit is reconstructed. Compared with the traditional modulation strategy, this strategy can achieve the power balance of three units in the full modulation regime after adding voltage constraints, and reduce the time required for the power balance of the low-voltage unit. Simulation and experimental results verified the feasibility of the proposed modulation strategy.

Hybrid cascaded inverter  /  carrier reconfiguration  /  power balance  /  balance time
顾军, 苏振广中国电源学会学生会员, 王伟健, 孙浩然, 宋忠明. 混合级联九电平逆变器新型功率均衡调制策略. 电源学报, 2026 , 24 (3) : 58 -66 . DOI: 10.13234/j.issn.2095-2805.2026.3.58
Jun GU, Zhenguang SU, Weijian WANG, Haoran SUN, Zhongming SONG. Novel Power Balance Modulation Strategy for Hybrid Cascaded Nine-level Inverter[J]. Journal of Power Supply, 2026 , 24 (3) : 58 -66 . DOI: 10.13234/j.issn.2095-2805.2026.3.58
Appendix
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Year 2026 volume 24 Issue 3
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.3.58
  • Receive Date：2023-11-24
  • Online Date：2026-10-29
  • Published：2026-03-30
Article Data
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History
  • Received：2023-11-24
  • Revised：2024-01-17
  • Accepted：2024-01-24
Affiliations
    School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan 232001, China
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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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