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流无刷电动机与普通直流电动机不同，转子由4块永久磁铁以压铸方法组合成为4极转子，定子绕组为普通三相星形绕纪。在定子绕组中通入按规律轮流转换接通或切断的电流(时序脉冲)，产生磁场，转子在交换的磁场力作用下旋转，电动机同步转动。脉冲直流电流产生的旋转磁场，与转于的永久磁场相互作用产生所需要的转矩，达到一定的转速，通过改变运行时脉冲的宽度和切换个数与导通时间的比值，调节和改变直流电动机的转速。直流无刷电动机的功率模块中只要将交流电变为直流电，而在电动机本身转子中不再产生励磁电流，大大减少了功率的损耗，提高了电动机的效率，因而应用此类技术的压缩机能获得较高的能效比(EER值)。但直流无刷电动机的结构，决定丁此类电动机的价格高于同容量的交流电动机</p> <p>本文地址：https://www.ktwxx.com/wenda/10560.html</p> <p><strong>TAG标签： <a href='/tag/diandongji_6377_1.html'>电动机</a> <a href='/tag/zhiliu_26_1.html'>直流</a> <a href='/tag/zhuanzi_4492_1.html'>转子</a> <a href='/tag/cichang_8828_1.html'>磁场</a></strong></p> </div> </div> <div style="text-align:center; background:#f2f2f2; line-height:36px;">【<a href="javascript:history.back(-1)">返回上一页</a>】</div> <div style="margin-top:15px; line-height:24px; "> 上一篇：<a href='https://www.ktwxx.com/wenda/10557.html'>中古空调品牌的挑战</a> <br /> 下一篇：<a href='https://www.ktwxx.com/wenda/10561.html'>空调安装_2</a> </div> <br /> <div style="width:400px;float:left;"> <b 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