Y-Source Two-Stage Matrix Converter and Its Modulation Strategy

Aiming at the defect of low voltage transfer ratio of two-stage matrix converter(TSMC), the proposed topology combines the Y-source network with the TSMC to form the Y-source two-stage matrix converter(YSTSMC) in this paper, and proposes its modulation strategy. The Y-source network is located in the dc-link of TSMC, and uses a tightly coupled inductor with three windings to transfer energy, which can increase voltage transfer ratio. Based on the mathematical model of the Y-source network, a small-signal model is established and dynamic analysis is performed. The analysis result of the impact of the output voltage of the rectifier stage on the output voltage of the system can be obtained. The space vector pulse width modulation (SVPWM) strategy is proposed to control YSTSMC, and according to the fluctuation of dc-link voltage, the modulation ratio of inverter stage is corrected in real time. By analyzing the voltage transfer ratio of YSTSMC, and the calculation expression of the maximum voltage transfer ratio is obtained. Finally, the experimental results are provided to verify the feasibility and validity of the proposed method.

[1]  Kadhim M. AL-Hakeem,et al.  Buck-Boost In-Out of Phase Y-source AC Matrix Converter , 2018, 2018 Third Scientific Conference of Electrical Engineering (SCEE).

[2]  Frede Blaabjerg,et al.  Y-source impedance network , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[4]  Baoming Ge,et al.  Hybrid PWM control for Z-source matrix converter , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[5]  Wei Qian,et al.  Trans-Z-Source Inverters , 2010, IEEE Transactions on Power Electronics.

[6]  Sun Xiang-dong.  Z-source Two-stage Matrix Converter With High Voltage Transfer Ratio and Immune to Abnormal Input Voltages , 2010 .

[7]  Sambasiva Rao,et al.  A Novel Three-Phase Three-Leg AC / AC Converter Using Nine IGBTS , 2012 .

[8]  Tatiana E. Shults,et al.  Overview of impedance source networks for voltage source inverters , 2015, 2015 16th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices.

[9]  Zhong Yanru.  Modulation technology for TSMC with zero vectors in rectifier stage , 2011 .

[10]  Carrier‐based PWM control strategy for Z ‐source two‐stage matrix converter , 2019, IET Power Electronics.

[11]  Haitham Abu-Rub,et al.  Z-Source Matrix Converter: An Overview , 2016, IEEE Transactions on Power Electronics.

[12]  Poh Chiang Loh,et al.  Improved Modulation Schemes for Indirect Z-source Matrix Converter With Sinusoidal Input and Output Waveforms , 2012, IEEE Transactions on Power Electronics.

[13]  Frede Blaabjerg,et al.  Effects of Leakage Inductances on Magnetically Coupled Y-Source Network , 2014, IEEE Transactions on Power Electronics.

[14]  Hong-Hee Lee,et al.  An approach of sparse matrix converter using Z-source network , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[15]  Frede Blaabjerg,et al.  Y-source inverter , 2014, 2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

[16]  Frede Blaabjerg,et al.  Comparison of Impedance-Source Networks for Two and Multilevel Buck–Boost Inverter Applications , 2016, IEEE Transactions on Power Electronics.

[17]  Frede Blaabjerg,et al.  Quasi-Y-source inverter , 2015, 2015 Australasian Universities Power Engineering Conference (AUPEC).