In recent years, the variable speed constant frequency wind generator system is the most widely question for discussion at home and abroad, especially for doubly-fed induction.
变速恒频风力发电系统是近年来国内外研究最广泛的课题,其中最具代表性的是绕线式转子双馈异步发电系统。
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A constant amplitude triangular-wave generator is shown in Figure 27. This circuit provides a variablefrequency triangular wave whose amplitude is independent of frequency.