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| Harmonics Reduction Research on Parallel-Connected Four Inverters for Maglev Train Drive System |
| Xu Xuehai, Wei wei |
| ZheJiang University Hangzhou 310027 China |
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Abstract The four inverters parallel connection based on carrier phase shift (IPC-CPS) is proposed in this paper. In this way, the comparatively low voltage and large current of the linear synchronous motor for drive system are satisfied, when the maglev train at the starting stage. The inverters are connected by inductors. The carrier phase shift technique is adopted, and carrier phase differentiates π/2 from each other. The harmonic components are reduced greatly comparing to the traditional four parallel connection inverters with same carrier phase. This paper makes theoretical harmonic analysis by a new frequency domain mathematical method. The quantitative relationship between fundamental magnitude, harmonics magnitude and modulation factor is given. The simulation shows the feasibility of the proposed control scheme and analysis method.
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Published: 07 March 2014
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[1] Nabael A, Takahashi I, Akagi H, A new neural-point clamped PWM inverter[J]. IEEE Transactions on Industrial Application, 1981, 17(5): 518~523.
[2] Tadakuma S, Tanaka S, et al. Consideration on large capacity PWM inverter for LSM drivers[C], Proceedings of the 1990 Intarnational. Power Electronics Conference, Tokyo, Japan, 1990, 413.
[3] Tadakuma S, et al. Fundamental approaches to PWM control based GTO inverters for linear synchronous motr drivers[C], Proceedings of the IEEE Industry Applications Society Annual Meeting, 1991, 847.
[4] Reed J, Sharma N. Large parallel UPS system utilizing PWM technology[C]. Proceedings of the Intelec International Telecommunnications Energy Conference, 1984, 282-289.
[5] Kawabata T, Higashino S. Parallel operation of voltage source inverters[J]. IEEE Transactions on Industry Application, 1988, 844 -856.
[6] Tabisz W A, Jovanovic M M, Lee F C. Present and future of distributed power systems[C]. Proceeding of the IEEE Applied Power Electronics Conferencs. 1992, 11-18.
[7] 陆继明, 李维波, 毛承雄. 高压变频器输出滤波器研究 [J]. 高电压技术, 2002, 28(11): 13-16.
[8] Suh BumSeok, Hyun DongSeok. A new n-level high voltage insersion system[J]. IEEE Transactions on Industry Electronics, 1997, 44(1): 107-115.
[9] McGrath B P, Holmes D G, Manjrekar M, et al. An improved modulation strategy for a hybrid multilevel inverter[C]. Proceedings of the IEEE Industry Applications Society, 2000. 2086-2093.
[10] 何湘宁, 陈阿莲. 多电平变换器的理论和应用技术[M]. 北京: 机械工业出版社, 2006.
[11] 王立乔, 胡长生, 张中超. 错时采样空间矢量调制技术的频域数学分析[J]. 电力系统自动化, 2004, 28(2): 26-31.
[12] 《现代数学手册》编委会. 现代数学手册: 经典数学卷[M]. 武汉:华中科技大学出版社, 2001. |
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2011, Vol. 26 
