Hybrid Modulation Strategy for Two-Stage Matrix Converter and its Application in Vector Control of Doubly Fed Induction Generator
Danyun Li*,**, Quntai Shen*, Zhentao Liu**,†, and Fang Liu*
*School of Information Science and Engineering, Central South University
Changsha, Hunan 410083, China
**School of Automation, China University of Geosciences
Wuhan, Hubei 430074, China
A hybrid modulation strategy (HMS) for a two-stage matrix converter (TSMC) is presented in this paper. According to the variation of voltage transfer ratio, different combinations of modulation modes for rectifier-side converter (RSC) and inverter-side converter (ISC) of TSMC are adopted. Two different current space vector modulation methods are used for RSC to obtain maximum and minor DC voltages. The power loss of TSMC is reduced based on the minor DC voltage. In addition to the linear space vector modulation for ISC, an overmodulation method is presented in order to increase the voltage transfer ratio of TSMC. HMS ensures smooth switching between different modulation modes and makes the best use of the advantage of these modes. Finally, HMS is applied in the case where TSMC is used as an AC-excitation converter for doubly fed induction generator (DFIG) to achieve maximum power point tracking (MPPT). The simulation results confirm the accuracy and feasibility of HMS and the good performance of the MPPT operation of DFIG excited by TSMC.
-  L. X. Wei, T. A. Lipo, and H. Chan, “Matrix Converter Topologies with Reduced No.of Switches,” IEEE 33rd Annual Power Electronic Specialists Conf., Vol.1, pp. 57-63, 2002.
-  L. X. Wei and T. A. Lipo, “A Novel Matrix Converter with Simple Commutation,” IAS Annul Meeting, Vol.3, pp. 1749-1754, 2001.
-  J. W. Kolar and F. Schafmeiser, “Novel Modulation Schemes Minimizing the Switching Losses of Sparse Matrix Converter,” Proc. 29th Annual Conf., Vol.3, pp. 2085-2090, 2003.
-  P. Zwimpfer and H. Stemmler, “Modulation and realization of a novel two-stage matrix converter,” Proc. of the Power Electronics Conf., Vol.2, pp. 485-490, 2001.
-  M. Jussila, M. Salo, and H. Tuusa, “Realization of a three-phase indirect matrix converter with an indirect vector modulation method,” Proc. of the 34th Annual Power Electronics Specialists Conf., Vol.2, pp. 689-694, 2003.
-  J. Kola, M. Baumann, F. Schafmeister, et al, “Novel three-phase AC-DC-AC sparse matrix converter,” Proc. of the 17th IEEE Applied Power Electronics Conf. and Exposition, Vol.2, pp. 777-791, 2002.
-  M. Y. Lee, P. Wheeler, and C. Klumpner, “A new modulation method for the three-level-output-stage matrix converter,” IEEE Power Conversion Conf., pp.776-783, 2007.
-  D. C. Lee and G. M. Lee, “A Novel Overmodulation Technique for Space-Vector PWM Inverters,” IEEE Trans. on Power Electron, Vol.13, No.6, pp. 1144-1151, 1998.
-  N. V. No and M. J. Yonu, “Two-Mode Overmodulation in Two-level Voltage Source Iverter using Principle Control betwenn Limit Trajectorier,” Proc. of PEDS. pp. 1274-1279, 2003.
-  L. Zhang and C. Watthanasam, “A matrix converter excited doubly-fed induction machine as a wind power generator,” 7th Int. Conf. on Power Electronics and Variable Speed Drives, pp.532-537, 2008.
-  S. M. Barakati, M.kazerani, and J. D. Aplevich.“Maximum power tracking control for a wind turbine system including a matrix converter,”IEEE Trans. on Energy Conversion, Vol.3, No.24, pp.705-713, 2009.
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