Abstract：In order to overcome the drawbacks such as high current harmonics and uncontrollable output voltage of the permanent magnetic synchronous generator(PMSG) with a diode rectifier in a small wind generation system, a controllable rectifying system is used which employs one-phase power factor correction(PFC) circuit for each phase of the PMSG. Its sensorless control strategy is advanced. The electromotive force(EMF) of the PMSG is reconstructed based on the models of the PMSG and the PFC circuits; the rotor flux linkage is observed by using an equivalent integrator which simply delays the EMF signal for 90°, and the phase angle for current control of the PFC circuit is derived from the rotor flux linkage by using a phase locked loop(PLL). Results of both simulation and experiments on a 2kW prototype platform verify that the PFC circuit adopting the control strategy can effectively suppress the harmonics in PMSG currents and keep the output DC voltage constant.
马颖涛, 孙旭东, 柴建云, 翟庆志. 永磁风力发电机无位置传感器PFC整流控制[J]. 电工技术学报, 2012, 27(3): 44-48.
Ma Yingtao, Sun Xudong, Chai Jianyun, Zhai Qingzhi. Sensorless Control of PFC Rectifiers for a PMSG Wind Generation System. Transactions of China Electrotechnical Society, 2012, 27(3): 44-48.
[1] Carrasco J M, Franquelo L G, Bialasiewicz J T, et al. Power-electronic systems for the grid integration of renewable energy sources: a survey[J]. IEEE Transactions on Industrial Electronics, 2006, 53(4): 1002-1016. [2] Baroudi J A, Dinavahi V, Knight A M. A review of power converter topologies for wind generators[J]. Renewable Energy, 2007, 32(14): 2369-2385. [3] Li W, Abbey C, Joos G. Control and performance of wind turbine generators based on permanent magnet synchronous machines feeding a diode rectifier[C]. IEEE Power Electronics Specialists Conference, 2006: 1-6. [4] Esmaili R, Xu Longya. Sensorless control of permanent magnet generator in wind turbine application[C]. IEEE Industry Applications Society Annual Meeting, 2006: 2070-2075. [5] 许颇, 张兴, 张崇巍, 等. 基于BOOST变换器的小型风力机并网逆变控制系统设计[J]. 太阳能学报, 2007, 28(3): 274-279. Xu Po, Zhang Xing, Zhang Chongwei, et al. The grid-connected inverter based on boost converter control system design of small wind machine[J]. Acta Energiae Solaris Sinica, 2007, 28(3): 274-279. [6] Liu L, Ma Y, Chai J, et al. Cascaded single phase PFC rectifier pair for permanent magnet wind generation system[C]. IEEE International Conference on Electrical Machines and Systems, 2008: 2516-2520. [7] Spooner E, Gordon P, Bumby J R, et al. Lightweight ironless-stator PM generators for direct-drive wind turbines[J]. IEE Proceedings Electric Power Applications, 2005, 152(1): 17-26. [8] 汪令祥, 张兴, 张崇巍, 等. 基于位置观测的直驱系统无速度传感器技术[J]. 电力系统自动化, 2008, 32(12): 78-81. Wang Lingxiang, Zhang Xing, Zhang Chongwei, et al. A sensorless control method for direct driven wind turbines based on position observation[J]. Automation of Electric Power Systems, 2008, 32(12): 78-81. [9] 王剑飞, 胡书举, 赵栋利, 等. 永磁直驱型风力发电机的无传感器控制[J]. 电机与控制应用, 2007, 36(6): 21-25. [10] Kaura V, Blasko V. Operation of a phase locked loop system under distorted utility conditions[J]. IEEE Transactions on Industry Applications, 1997, 33(1): 58-63.
2012, Vol. 27 
