适合于直接驱动型风力发电系统的交叉型Boost变流器

INTERLEAVED BOOST CONVERTER FOR DIRECT-DRIVE WIND POWER GENERATOR SYSTEM

采用一个现有的小功率永磁同步机和风力机直接耦合构建了一个直驱型风力发电系统。系统升压部分采用了两单元交错式Boost变换器(IBC),两个Boost变换器采用频率相同、存在一定相移角度的驱动信号,通过变换器并联,各个单元可以共同承担输入电流,因此电力电子系统具有更高的可靠性和效率。另外,通过并联也可以提高整个系统的性能(如维护简单,容错性高,散热性好)。仿真和实验验证了上述结论的正确性。

The procedure of adapting a small, standard, readily available PM synchronous a small wind turbine was outlined. The system was achieved through a two-cell interleaved machine for direct coupling to Boost converter （IBC）, which is composed of several identical Boost converters connected in parallel. The converters are controlled by interleaved switching signals, which have the same switching frequency and the same phase shift. By virtue of paralleling the converters, the input current can be shared among the cells or systems can be obtained. In addition, it is possible to phases, so that high reliability and efficiency in power electronic improve the system characteristics such as maintenance, fault tolerance, and good heat dissipation. All this were verified by simulation and experiment .