Modified Carrier-based Pulse Width Modulation Strategy for Three-phase Vienna Rectifier

doi:10.11985/2021.04.018

Abstract

Abstract:

Considering the influence factors such as filter inductance, parasitic parameters of switching devices and control delay, so the rectifier may work in the state of non-unity power factor. At this time, if the rectifier adopts the traditional carrier-based pulse width modulation (CB-PWM) strategy, an area with inconsistent voltage and current polarity will be generated, which may cause the switching tubes to malfunction and the performance of the rectifier to decrease. For this reason, a modified carrier-based pulse width modulation strategy (MCB-PWM) is proposed based on the traditional CB-PWM strategy to improve the zero-crossing distortion of the rectifier. First, based on the working principle of the three-phase Vienna rectifier, a mathematical model is established in a two-phase rotating (d-q) coordinate system; secondly, the causes of waveform distortion at the grid-side current zero-crossing point caused by the traditional CB-PWM strategy is analyzed in detail, the compensation measure is designed, and the specific principle of the MCB-PWM strategy is given; in addition, the overall control block diagram of the system is formed by combining the traditional double closed-loop control; finally, the traditional CB-PWM strategy is compared with the MCB-PWM strategy by the simulation in Matlab/Simulink. The results show that the input current zero-crossing distortion phenomenon can be significantly improved by using the MCB-PWM strategy, and the correctness and effectiveness of the theoretical analysis are verified.

Key words: Vienna rectifier, zero-crossing distortion, CB-PWM, Simulink simulation

CLC Number:

TM461

CHEN Lan, XIAO Huihui, GUO Qiang, XIANG Wenkai. Modified Carrier-based Pulse Width Modulation Strategy for Three-phase Vienna Rectifier[J]. Journal of Electrical Engineering, 2021, 16(4): 143-150.

Figures/Tables 13

References 21

[1]	范必双, 谭冠政, 樊绍胜, 等. 一种具有双非零电压矢量输出的三电平PWM整流器直接功率控制方法[J]. 中国电机工程学报, 2015, 35(22):5832-5841.
	FAN Bishuang, TAN Guanzheng, FAN Shaosheng, et al. A direct power control method for three-level PWM rectifier with output of double non-zero voltage vectors[J]. Proceedings of the CSEE, 2015, 35(22):5832-5841.
[2]	曹晓冬, 谭国俊, 王从刚, 等. 三电平PWM整流器多模型预测控制方法[J]. 电工技术学报, 2014, 29(8):142-150.
	CAO Xiaodong, TAN Guojun, WANG Conggang, et al. Research on multi-model predictive control strategy of three-level PWM rectifier[J]. Transactions of China Electrotechnical Society, 2014, 29(8):142-150.
[3]	谭国俊, 曹晓冬, 王从刚, 等. 基于满意优化的三电平PWM整流器瞬时开关频率抑制方法[J]. 中国电机工程学报, 2014, 34(24):4057-4067.
	TAN Guojun, CAO Xiaodong, WANG Conggang, et al. Instantaneous switching frequency suppression method for three-level PWM rectifier based on satisfactory optimization[J]. Proceedings of the CSEE, 2014, 34(24):4057-4067.
[4]	ZHU W, CHEN C, DUAN S, et al. A carrier-based discontinuous PWM method with varying clamped area for Vienna rectifier[J]. IEEE Transactions on Industrial Electronics, 2019, 66(9):7177-7188. doi: 10.1109/TIE.41
[5]	郝振洋, 徐子梁, 陈宇, 等. 航空Vienna整流器故障诊断与容错控制[J]. 电工技术学报, 2020, 35(24):5152-5163.
	HAO Zhenyang, XU Ziliang, CHEN Yu, et al. Fault diagnosis and fault tolerant control for aviation Vienna rectifier[J]. Transactions of China Electrotechnical Society, 2020, 35(24):5152-5163.
[6]	PARK J H, LEE J S, LEE K B. Sinusoidal harmonic voltage injection PWM method for Vienna rectifier with an LCL filter[J]. IEEE Transactions on Power Electronics, 2021, 36(3):2875-2888. doi: 10.1109/TPEL.63
[7]	邹宇航, 张犁, 赵瑞, 等. 三相Vienna整流器的不连续空间矢量脉宽调制及电压谐波分析方法[J]. 中国电机工程学报, 2020, 40(24):8123-8130,8249.
	ZOU Yuhang, ZHANG Li, ZHAO Rui, et al. Discontinuous pulse width modulation and voltage harmonic analysis method for three-phase Vienna-type rectifiers[J]. Proceedings of the CSEE, 2020, 40(24):8123-8130,8249.
[8]	BURGOS R, LAI Rixin, BOROYERICH D, et al. Space vector modulator for Vienna-type rectifiers based on the equivalence between two-and-three-level converters:A carrier-based implementation[J]. IEEE Transaction on Power Electronics, 2008, 23(4):1888-1899. doi: 10.1109/TPEL.2008.925180
[9]	姜海鹏, 刘永强. 带中点电位平衡控制的VIENNA 整流器简化 SVPWM双闭环控制[J]. 电机与控制学报, 2014, 18(2):35-41.
	JIANG Haipeng, LIU Yongqiang. VIENNA rectifier with neutral potential balance control simplifies SVPWM double closed-loop control[J]. Journal of Electrical Machinery and Control, 2014, 18(2):35-41.
[10]	HANG L, LI B. Equivalence of SVM and carrier based PWM in three-phase/wire/level Vienna rectifier and capability of unbalanced-load control[J]. IEEE Transactions on Industrial Electronics, 2014, 61(1):20-29. doi: 10.1109/TIE.2013.2240637
[11]	BURGOS R, LAI R, ROSADO S, et al. A full frequency range average model for Vienna-type rectifiers[J]. IEEE Transactions on Power Electronics, 2009, 24(11):2509-2522. doi: 10.1109/TPEL.2009.2032262
[12]	LEE J S, LEE K B. A novel carrier-based PWM method for Vienna rectifier with a variable power factor[J]. IEEE Transactions on Industrial Electronics, 2016, 63(1):3-12. doi: 10.1109/TIE.41
[13]	LEE J S, LEE K B. Carrier-based discontinuous PWM method for Vienna rectifiers[J]. IEEE Transactions on Power Electronics, 2017, 30(6),2896-2900. doi: 10.1109/TPEL.2014.2365014
[14]	杨頔, 姚钢, 周荔丹. 功率变化环境下的四线制Vienna整流器优化联合控制方法[J]. 电工技术学报, 2021, 36(2):305-319.
	YANG Di, YAO Gang, ZHOU Lidan. An improved control method of 4-wire Vienna rectifier considering power fluctuation[J]. Transactions of China Electrotechnical Society, 2021, 36(2):305-319.
[15]	王涛, 陈昌松, 段善旭, 等. 用于改善电流过零点畸变的Vienna整流器空间矢量调制策略[J]. 电工技术学报, 2019, 34(18):3854-3864.
	WANG Tao, CHEN Changsong, DUAN Shanxu, et al. An improved space-vector modulation for Vienna rectifier to eliminating current distortion around zero-crossing point[J]. Transactions of China Electrotechnical Society, 2019, 34(18):3854-3864.
[16]	ZHANG B, ZHANG C, XING X, et al. Novel three-layer discontinuous PWM method for mitigating resonant current and zero-crossing distortion in Vienna rectifier with an LCL filter[J]. IEEE Transactions on Power Electronics, 2021, 36(12):14478-14490. doi: 10.1109/TPEL.2021.3088610
[17]	WU F, LI X, DUAN J. Improved elimination scheme of current zero-crossing distortion in unipolar hysteresis current controlled grid-connected inverter[J]. IEEE Transactions on Industrial Informatics, 2015, 11(5):1111-1118. doi: 10.1109/TII.2015.2470540
[18]	YIN H, LANG T, LI X, et al. A hybrid boundary conduction modulation for a single-phase H-bridge inverter to alleviate zero-crossing distortion and enable reactive power capability[[J]. IEEE Transactions on Power Electronics, 2020, 35(8):8311-8323. doi: 10.1109/TPEL.63
[19]	王楠, 易映萍, 张超. 微逆变器过零点电流畸变抑制的混合控制策略[J]. 电力系统保护与控制, 2014, 42(20):59-63.
	WANG Nan, YI Yingping, ZHANG Chao. Hybrid control strategy for suppressing zero-crossing current distortion of micro-inverter[J]. Power System Protection and Control, 2014, 42(20):59-63.
[20]	刘斌, 粟梅, 林小峰, 等. 非隔离型H6桥单相光伏逆变器无功补偿调制及并网电流波形改善控制[J]. 中国电机工程学报, 2016, 36(4):1050-1060.
	LIU Bin, LI Mei, LIN Xiaofeng, et al. Reactive power compensation modulation and waveform-improving control strategy for non-isolated H6-type single-phase photovoltaic grid-connected inverter[J]. Proceedings of the CSEE, 2016, 36(4):1050-1060.
[21]	杨明, 刘杰, 梁轩瑞, 等. 一种有源功率因数校正电流畸变抑制控制技术[J]. 电力系统自动化, 2014, 38(3):30-35.
	YANG Ming, LIU Jie, LIANG Xuanrui, et al. A control strategy of boost PFC to minimize current zero-crossing distortion[J]. Automation of Electric Power System, 2014, 38(3):30-35.

补偿区域		补偿大小
1	0°-θ_pf	V_comp=-V_{aref, offset}
2	60°-60°+θ_pf	V_comp=-V_{rcref, offset}
3	120°-120°+θ_pf	V_comp=-V_{bref, offset}
4	180°-180°+θ_pf	V_comp=-V_{aref, offset}
5	300°-300°+θ_pf	V_comp=-V_{cref, offset}
6	360°-360°+θ_pf	V_comp=-V_{bref, offset}

参数	数值
网侧电压有效值E_x(x=a, b, c)/V		80
电网频率f/Hz		50
网侧电感L_x(x=a, b, c)/mH		2.89
网侧电阻R_x(x=a, b, c)/Ω		0.1
直流侧电容C_x(x=1, 2)/μF		2 200
直流侧电压U_dc/V		200/250
开关频率f_s/kHz		20
负载电阻R_load/Ω		50/25