矩阵式隔离型双向AC-DC变换器控制策略
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摘要
针对矩阵式隔离型双向AC-DC变换器,提出一种控制策略,即前级矩阵变换电路和后级全桥电路的调制策略以及矩阵变换器双向开关的换流方法。其中,前级矩阵变换电路的调制基于双线电压调制思路,对扇区进行重新划分,调整和优化开关状态选择,以满足简化换流需求,后级全桥电路根据前级矩阵变换电路的调制策略,配合前级调节脉冲宽度进行协调控制,双向开关换流采用基于交流电压相对大小的两步换流方法。仿真和实验结果表明,在整流和逆变模式下,矩阵式隔离型双向AC-DC变换器均能保证网侧电流正弦,功率因数接近于1,输出电压电流可以保持恒定。由此证明,提出的控制策略,可实现变换器能量双向变换,且输入输出性能优良。
In this paper, a control strategy is proposed for the matrix isolated bi-directional AC/DC converter, including the modulation strategy of front-end matrix converter circuit and back-end full-bridge circuit, and the commutation method for the bi-directional switch of matrix converter. Based on the double-line voltage modulation theory, the modulation of front-end matrix transformation circuit rebuilds the sector repartition, and adjusts and optimizes the option of switching state to satisfy the simplified commutation demand. The back-end full-bridge circuit is controlled by adjusting pulse width according to the polarity of the matrix converter circuit modulation, and the bi-directional switch uses a two-step switching method based on the relative size of AC voltage. The simulation and experimental results show that the grid current is sinusoidal, the power factor is close to 1, and the output voltage/current are constant in rectifier and inverter modes. Therefore, the proposed strategy in this paper can realize the bidirectional energy conversion of the converter, and has excellent input and output performance.
In this paper, a control strategy is proposed for the matrix isolated bi-directional AC/DC converter, including the modulation strategy of front-end matrix converter circuit and back-end full-bridge circuit, and the commutation method for the bi-directional switch of matrix converter. Based on the double-line voltage modulation theory, the modulation of front-end matrix transformation circuit rebuilds the sector repartition, and adjusts and optimizes the option of switching state to satisfy the simplified commutation demand. The back-end full-bridge circuit is controlled by adjusting pulse width according to the polarity of the matrix converter circuit modulation, and the bi-directional switch uses a two-step switching method based on the relative size of AC voltage. The simulation and experimental results show that the grid current is sinusoidal, the power factor is close to 1, and the output voltage/current are constant in rectifier and inverter modes. Therefore, the proposed strategy in this paper can realize the bidirectional energy conversion of the converter, and has excellent input and output performance.
引文
[1]Singh A K,Das P,Panda S K.A novel matrix based isolated three phase AC-DC converter with reduced switching losses[C]//Applied Power Electronics Conference and Exposition,Charlotte,NC,USA,2015:1875-1880.
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[3]Chiang Goh Teck,Itoh J I.DC/DC Boost converter functionality in a three-phase indirect matrix converter[J].IEEE Transactions on Power Electronics2011,26(5):1599-1607.
[4]吴胜华,钟炎平,赖向东,等.高频链矩阵式正弦波变换器控制策略的改进[J].电工技术学报,2013,28(3):228-233.Wu Shenghua,Zhong Yanping,Lai Xiangdong,et al.Improvement of control strategy for matrix sinusoidal converter with high frequency link[J].Transactions of China Electrotechnical Society,2013,28(3):228-233.
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[7]刘晓飞,张千帆,崔淑梅.电动汽车V2G技术综述[J].电工技术学报,2012,27(2):121-127.Liu Xiaofei,Zhang Qianfan,Cui Shumei.Review of electric vehicle V2G technology[J].Transactions of China Electrotechnical Society,2012,27(2):121-127.
[8]文锋,姜久春,郭慧萍.基于矩阵变换器的AC/DC变换器[J].电工技术学报,2009,24(3):128-131.Wen Feng,Jiang Jiuchun,Guo Huiping.AC/DCconverter based on matrix converter[J].Transactions of China Electrotechnical Society,2009,24(3):128-131.
[9]邢毅川,牟宪民,齐琛.一种新的单相-三相矩阵变换器调制策略[J].电工技术学报,2015,30(8):90-96.Xing Yichuan,Mu Xianmin,Qi Chen.A new modulation strategy for single-phase to three-phase matrix converter[J].Transactions of China Electrotechnical Society,2015,30(8):90-96.
[10]Singh A K,Das P,Panda S K.Novel switching scheme for matrix based isolated three phase AC to DC conversion[C]//Conference of the IEEE Industrial Electronics Society,Dallas,TX,USA,2015:3324-3329.
[11]Matsui,Yuto,Suzuki K,et al.High-frequency link AC/DC converter using matrix converter with softswitching technique[C]//IEEE Energy Conversion Congress and Exposition,Cincinnati,OH,USA,2017:1715-1722.
[12]Singh A K,Jeyasankar E,Das P,et al.A single-stage matrix based isolated three phase AC-DC converter with novel current commutation[J].IEEE Transactions on Transportation Electrification,2016,DOI:10.1109/TTE.2016.2615811.
[13]Varaj?o D,Rui E A,Miranda L M,et al.Modulation strategy for a single-stage bidirectional and isolated AC-DC matrix converter for energy storage systems[J].IEEE Transactions on Industrial Electronics,2017,DOI:10.1109/TIE.2017.2752123.
[14]Varaj?o D,Miranda L M,Rui E A,et al.Power transformer for a single-stage bidirectional and isolated AC-DC matrix converter for energy storage systems[C]//Conference of the Industrial Electronics Society,Florence,Italy,2016,DOI:10.1109/IECON.2016.7793779.
[15]Yan Zhaoyang,Zhang Kun.SPWM modulation strategy study of AC/DC matrix converter with high frequency isolation[C]//International Conference on Electrical Machines and Systems,Wuhan,China,2008:3789-3792.
[16]宋卫章,钟彦儒,魏西平,等.适用于双级矩阵变换器的空间矢量过调制策略[J].电工技术学报,2012,27(9):242-250.Song Weizhang,Zhong Yanru,Wei Xiping,et al.Space vector over-modulation strategy used for two-stage matrix converters[J].Transactions of China Electrotechnical Society,2012,27(9):242-250.
[17]Afsharian J,Xu D D,Wu B,et al.The optimal PWMmodulation and commutation scheme for three-phase isolated Buck matrix type rectifier[J].IEEE Transactions on Power Electronics,2017,DOI:10.1109/TPEL.2017.2661242.
[2]Zhu J D,Xu Z,Jiang B H,et al.Close-loop control of an AC-DC matrix converter for automotives[C]//Electrical Power and Energy Conference,Winnipeg,MB,Canada,2011:426-431.
[3]Chiang Goh Teck,Itoh J I.DC/DC Boost converter functionality in a three-phase indirect matrix converter[J].IEEE Transactions on Power Electronics2011,26(5):1599-1607.
[4]吴胜华,钟炎平,赖向东,等.高频链矩阵式正弦波变换器控制策略的改进[J].电工技术学报,2013,28(3):228-233.Wu Shenghua,Zhong Yanping,Lai Xiangdong,et al.Improvement of control strategy for matrix sinusoidal converter with high frequency link[J].Transactions of China Electrotechnical Society,2013,28(3):228-233.
[5]Li Jianxia,Wu Xiaoyu,Zhang Chen,et al.AC-DCmatrix converter with positive and negative output capacity in unbalanced grid[C]//Sixth International Conference on Instrumentation&Measurement,Computer,Communication and Control,Harbin,China,2016:344-349.
[6]Su Mei,Wang Hui,Sun Yao,et al.AC/DC matrix converter with an optimized modulation strategy for V2G applications[J].IEEE Transactions on Power Electronics,2013,28(12):5736-5745.
[7]刘晓飞,张千帆,崔淑梅.电动汽车V2G技术综述[J].电工技术学报,2012,27(2):121-127.Liu Xiaofei,Zhang Qianfan,Cui Shumei.Review of electric vehicle V2G technology[J].Transactions of China Electrotechnical Society,2012,27(2):121-127.
[8]文锋,姜久春,郭慧萍.基于矩阵变换器的AC/DC变换器[J].电工技术学报,2009,24(3):128-131.Wen Feng,Jiang Jiuchun,Guo Huiping.AC/DCconverter based on matrix converter[J].Transactions of China Electrotechnical Society,2009,24(3):128-131.
[9]邢毅川,牟宪民,齐琛.一种新的单相-三相矩阵变换器调制策略[J].电工技术学报,2015,30(8):90-96.Xing Yichuan,Mu Xianmin,Qi Chen.A new modulation strategy for single-phase to three-phase matrix converter[J].Transactions of China Electrotechnical Society,2015,30(8):90-96.
[10]Singh A K,Das P,Panda S K.Novel switching scheme for matrix based isolated three phase AC to DC conversion[C]//Conference of the IEEE Industrial Electronics Society,Dallas,TX,USA,2015:3324-3329.
[11]Matsui,Yuto,Suzuki K,et al.High-frequency link AC/DC converter using matrix converter with softswitching technique[C]//IEEE Energy Conversion Congress and Exposition,Cincinnati,OH,USA,2017:1715-1722.
[12]Singh A K,Jeyasankar E,Das P,et al.A single-stage matrix based isolated three phase AC-DC converter with novel current commutation[J].IEEE Transactions on Transportation Electrification,2016,DOI:10.1109/TTE.2016.2615811.
[13]Varaj?o D,Rui E A,Miranda L M,et al.Modulation strategy for a single-stage bidirectional and isolated AC-DC matrix converter for energy storage systems[J].IEEE Transactions on Industrial Electronics,2017,DOI:10.1109/TIE.2017.2752123.
[14]Varaj?o D,Miranda L M,Rui E A,et al.Power transformer for a single-stage bidirectional and isolated AC-DC matrix converter for energy storage systems[C]//Conference of the Industrial Electronics Society,Florence,Italy,2016,DOI:10.1109/IECON.2016.7793779.
[15]Yan Zhaoyang,Zhang Kun.SPWM modulation strategy study of AC/DC matrix converter with high frequency isolation[C]//International Conference on Electrical Machines and Systems,Wuhan,China,2008:3789-3792.
[16]宋卫章,钟彦儒,魏西平,等.适用于双级矩阵变换器的空间矢量过调制策略[J].电工技术学报,2012,27(9):242-250.Song Weizhang,Zhong Yanru,Wei Xiping,et al.Space vector over-modulation strategy used for two-stage matrix converters[J].Transactions of China Electrotechnical Society,2012,27(9):242-250.
[17]Afsharian J,Xu D D,Wu B,et al.The optimal PWMmodulation and commutation scheme for three-phase isolated Buck matrix type rectifier[J].IEEE Transactions on Power Electronics,2017,DOI:10.1109/TPEL.2017.2661242.
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