产品详情
矢量控制变频调速的做法是将异步电动机在三相坐标系下的定子电流Ia、Ib、Ic、通过三相－二相变换，等效成两相静止坐标系下的交流电流Ia1Ib1，再通过按转子磁场定向变换，等效成同步坐标系下的直流电流Im1、It1(Im1相当于直流电动机的励磁电流；It1相当于与转矩成正比的电枢电流)，然后模仿直流电动机的控制，求得直流电动机的控制量，经过相应的坐标反变换，实现对异步电动机的控制。其实质是将交流电动机等效为直流电动机，分别对速度，磁场两个分量进行控制。通过控制转子磁链，然后分解定子电流而转矩和磁场两个分量，经坐标变换，实现正交或解耦控制。矢量控制的提出具有划时代的意义。然而在实际应用中，由于转子磁链难以准确观测，特性受电动机参数的影响较大，且在等效直流电动机控制中所用矢量变换较复杂，使得实际的控制效果难以达到分析的结果。
【公 司】： 福建鸿飞达自动化科技有限公司【主 营】： AB(罗克韦尔)PLC全系列、ABB机器人备件、施耐德140/TSX、西门子6SN/6FC、伺服全套等
【价 格】： 电议
【发布人】： 程先生
【电 话】： 15306977024 13625073704
【所在地】： 福建 - 福州
【坐 机】： 0591-83532940
【Q Q】： 2851617309
【传 真】： 0591-88263940
【邮 箱】： 2851617309@qq.com
福建省福州市高新区新保路正荣财富中心SOHO B幢8楼
产品价格以电话或者QQ询价为准，发布价格不做参考，图片也一样
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