一种非对称级联H桥三相逆变器的功率均衡混合随机脉宽调制方法

doi:10.19595/j.cnki.1000-6753.tces.231823

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Abstract With the continuous development of power electronics technology, three-phase voltage source inverters controlled by pulse width modulation (PWM) have been widely used in AC drive systems, electric vehicles, and ships. Such methods have fixed carrier frequency, and the PWM noise peak of line voltage is very high, causing acoustic noises in the motor and electromagnetic noises in the inverter. Scholars have proposed various random PWM methods to suppress PWM noise peaks, such as RPWM method optimization from random algorithms and carrier sequences. The in-phase disposition pulse width modulation (IPD-PWM) has a smaller THD of line voltage than the phase-shifted pulse width modulation (PS-PWM).
However, these modulation methods are mainly applied to single H-bridge inverters. Compared with single H-bridge inverters, cascaded H-bridge inverters have a smaller total harmonic distortion (THD) of output voltage. In addition, asymmetric cascaded H-bridge inverters have a larger output power and a smaller output voltage THD than symmetric cascaded H-bridge inverters. Therefore, this paper proposes a power-balanced hybrid RPWM (PB-HRPWM) method for asymmetric cascaded H-bridge three-phase inverters with a voltage ratio of 1:1:1:3. The proposed PB-HRPWM method can be summarized as follows. (1) The driving pulses of the high-voltage H-bridge unit and the modulation wave of the low-voltage H-bridge unit are generated by comparing the modulation wave of the high-voltage H-bridge unit with the reference level. (2) The random pulses are generated by comparing in-phase random level-shifted carriers with the modulation wave of the low-voltage H-bridge unit. (3) The random pulses are circularly distributed according to 1/2 T_ah by pulse logic operation method to obtain the driving pulses of the low-voltage H-bridge unit. (4) The driving pulses of high and low-voltage H-bridges control the operation of the three-phase inverter. The proposed PB-HRPWM method effectively reduces the PWM noise peak of line voltage, and the power balance between the low-voltage H-bridge units can be realized. Compared with conventional random and non-random PWM methods, the proposed PB-HRPWM method has a lower PWM noise peak of line voltage and a smaller total harmonic distortion of line voltage. Simulations and experiments verify the effectiveness and feasibility of the proposed PB-HRPWM method.
In summary, the proposed PB-HRPWM method integrates IPD-PWM, step wave modulation, random modulation, and power balance through the proposed in-phase disposition random carriers and pulse logic operations. Therefore, utilizing the low waveform distortion of IPD-PWM and the high-frequency spectrum dispersion of random frequency modulation can decrease the THD and PWM noise peak of line voltage. The power balance target is decoupled from the modulation wave or carrier reconstruction through pulse logic operations between random pulses and pulse signals, avoiding complex modulation wave or carrier design in digital processors.

Key words： Multilevel inverter cascaded H-bridge pulse width modulation noise power balance

Received: 31 October 2023

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TM464

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	Liu Jianfeng
	Gong Renxi
	Zhang Yuanyuan

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Liu Jianfeng,Gong Renxi,Zhang Yuanyuan. A Power-Balanced Hybrid Random Pulse Width Modulation Method for Asymmetric Cascaded H-Bridge Three-Phase Inverter[J]. Transactions of China Electrotechnical Society, 2024, 39(24): 7807-7820.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.231823 OR https://dgjsxb.ces-transaction.com/EN/Y2024/V39/I24/7807

[1] Liu Senyi, Liu Chunhua.Virtual-vector-based robust predictive current control for dual three-phase PMSM[J]. IEEE Transactions on Industrial Electronics, 2021, 68(3): 2048-2058.
[2] 王晓姬, 王道涵, 王柄东, 等. 电动汽车驱动/充电一体化系统及其控制策略综述[J]. 电工技术学报, 2023, 38(22): 5940-5958.
Wang Xiaoji, Wang Daohan, Wang Bingdong, et al.A review of drive-charging integrated systems and control strategies for electric vehicles[J]. Transactions of China Electrotechnical Society, 2023, 38(22): 5940-5958.
[3] Trzynadlowski A M, Blaabjerg F, Pedersen J K, et al.Random pulse width modulation techniques for converter-fed drive systems-a review[J]. IEEE Transactions on Industry Applications, 1994, 30(5): 1166-1175.
[4] 蒋栋, 沈泽微, 刘自程, 等. 电力推进系统电力电子噪声的主动抑制技术进展[J]. 中国电机工程学报, 2020, 40(16): 5291-5302.
Jiang Dong, Shen Zewei, Liu Zicheng, et al.Progress in active mitigation technologies of power electronics noise for electrical propulsion system[J]. Proceedings of the CSEE, 2020, 40(16): 5291-5302.
[5] Deng Wenzhe, Zuo Shuguang.Electromagnetic vibration and noise of the permanent-magnet synchronous motors for electric vehicles: an overview[J]. IEEE Transactions on Transportation Electrification, 2019, 5(1): 59-70.
[6] 刘剑, 王玉, 鲁炳林, 等. 离散均匀分布随机SVPWM中伪随机数序列的表征与选择[J]. 中国电机工程学报, 2023, 43(9): 3586-3599.
Liu Jian, Wang Yu, Lu Binglin, et al.Characterization and selection of random SVPWM pseudo random number sequence based on discrete uniform distribution[J]. Proceedings of the CSEE, 2023, 43(9): 3586-3599.
[7] 胡文华, 刘剑锋. 一类新型的混合H桥级联逆变器构成方案[J]. 中国电机工程学报, 2019, 39(20): 6044-6055, 6185.
Hu Wenhua, Liu Jianfeng.A new scheme of hybrid H-bridge cascaded inverter[J]. Proceedings of the CSEE, 2019, 39(20): 6044-6055, 6185.
[8] 李国华, 刘春武, 汪玉凤. 单相逆变器随机PWM选择性消谐滞环随机扩频方法[J]. 电工技术学报, 2021, 36(6): 1279-1289.
Li Guohua, Liu Chunwu, Wang Yufeng.A novel hysteresis random spread-spectrum method in random PWM selective harmonic elimination for single-phase inverter[J]. Transactions of China Electrotechnical Society, 2021, 36(6): 1279-1289.
[9] Peyghambari A, Dastfan A, Ahmadyfard A.Selective voltage noise cancellation in three-phase inverter using random SVPWM[J]. IEEE Transactions on Power Electronics, 2016, 31(6): 4604-4610.
[10] 王亭岭, 熊军华, 张瑾. 基于预设载波的随机开关频率调制方法[J]. 北京航空航天大学学报, 2013, 39(3): 355-360.
Wang Tingling, Xiong Junhua, Zhang Jin.Random PWM method based on pre-determined carrier frequencies[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(3): 355-360.
[11] Chen H C, Chang Y C, Huang C K.Development of optimised carrier sequence in MCU-based random-frequency PWM[J]. IET Electric Power Applications, 2007, 1(1): 43.
[12] 陈少先, 丁树业, 申淑锋, 等. 船舶用表贴式永磁同步电机的电磁振动分析与抑制[J]. 电工技术学报, 2023, 38(5): 1275-1286, 1298.
Chen Shaoxian, Ding Shuye, Shen Shufeng, et al.Analysis and suppression of electromagnetic vibration of surface mounted permanent magnet synchronous motor for ships[J]. Transactions of China Electrotechnical Society, 2023, 38(5): 1275-1286, 1298.
[13] Gamoudi R, Elhak Chariag D, Sbita L.A review of spread-spectrum-based PWM techniques-a novel fast digital implementation[J]. IEEE Transactions on Power Electronics, 2018, 33(12): 10292-10307.
[14] 胡文华, 刘剑锋, 曹仁赢. 混合级联H桥十三电平逆变器的混合调制[J]. 电力电子技术, 2020, 54(3): 90-92.
Hu Wenhua, Liu Jianfeng, Cao Renying.Hybrid modulation of hybrid cascaded H-bridge thirteen-level inverter[J]. Power Electronics, 2020, 54(3): 90-92.
[15] 顾军, 宋飞, 李平, 等. 混合级联H桥逆变器的调制策略优化方法[J]. 高电压技术, 2022, 48(2): 753-761.
Gu Jun, Song Fei, Li Ping, et al.Modulation strategy optimization method of hybrid cascaded H-bridge inverter[J]. High Voltage Engineering, 2022, 48(2): 753-761.
[16] Ye Manyuan, Peng Ruifan, Tong Ziwei, et al.A generalized scheme with linear power balance and uniform switching loss for asymmetric cascaded H-bridge multilevel inverters[J]. IEEE Transactions on Power Electronics, 2022, 37(3): 2719-2730.
[17] 李金玉, 陈杰, 龚春英, 等. 一种提高级联H桥逆变器功率不平衡运行能力的控制策略[J]. 电工技术学报, 2023, 38(10): 2731-2743.
Li Jinyu, Chen Jie, Gong Chunying, et al.A control strategy to improve working ability of cascaded H-bridge inverter under power imbalance[J]. Transa-ctions of China Electrotechnical Society, 2023, 38(10): 2731-2743.
[18] Guo Xiaoqiang, Wang Xiaoming, Wang Chaozhe, et al.Improved modulation strategy for singe-phase cascaded H-bridge multilevel inverter[J]. IEEE Transactions on Power Electronics, 2022, 37(3): 2470-2474.
[19] 陈仲, 许亚明, 那显龙, 等. 级联型多电平逆变器输出电压循环分配的功率均衡控制及优化[J]. 中国电机工程学报, 2018, 38(4): 1132-1142, 1291.
Chen Zhong, Xu Yaming, Na Xianlong, et al.Power balance control and optimization methods with output voltage rotation for cascaded multilevel inverter[J]. Proceedings of the CSEE, 2018, 38(4): 1132-1142, 1291.
[20] 陈仲, 孙健博, 许亚明, 等. 采用输出周期脉冲循环的级联H桥型逆变器功率均衡方法[J]. 电工技术学报, 2020, 35(4): 827-838.
Chen Zhong, Sun Jianbo, Xu Yaming, et al.Power balance method of cascaded H-bridge inverter based on pulse circulation in output period[J]. Transactions of China Electrotechnical Society, 2020, 35(4): 827-838.