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Old 07-26-2011, 02:29 AM   #1
qdsk84pdyq
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Default 【清大圣科与消费者携手打击骗子】变频器工作原理,变

清大圣科科技有限公司×× 其工作原理如下图所示××清大圣科×清大圣科电焊条×清 大圣科电焊条设备×清大金桥×清大金桥电焊条设备×清大圣科电焊条& times;www.qhsk.cn×清大圣科科技有限公司××
交-直-交型变频器的工作原理是借助微电子器件、电力电子器件和控制技术,先将工频电源经过二极管整流成直 流电,再由电力电子器件把直流电逆变为频率可调的交流电源××清大圣科&time s;清大圣科电焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条 设备×清大圣科电焊条×www.qhsk.cn×
需要设计一台专用的装置,该装置的一端和电网电源连接,以接受来自电网中固定频率的电源的电能;另一端和电 动机连接,为电动机提供频率可变的交流电源××清大圣科×清大圣科电 焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备&time s;清大圣科电焊条×www.qhsk.cn×清大圣科科技有限公司&times ;×
至于变频器工作原理笔者就简单的跟大家说说,就以常见的交-直-交型变频器为例,简要说明一下变频器的工作 原理××清大圣科×清大圣科电焊条×清大圣科电焊条设备 ×清大金桥×清大金桥电焊条设备×清大圣科电焊条×ww w.qhsk.cn×清大圣科科技有限公司××
这种装置就是变频器××清大圣科×清大圣科电焊条×清大 圣科电焊条设备×清大金桥×清大金桥电焊条设备×清大圣科电焊条&t imes;www.qhsk.cn×清大圣科科技有限公司××
若直接将电网的交流电源接至交流电动机,是无法改变通入交流电动机的电源频率,无法实现电动机的变频调速& times;×清大圣科×清大圣科电焊条×清大圣科电焊条设备&ti mes;清大金桥×清大金桥电焊条设备×清大圣科电焊条×www.q hsk.cn×清大圣科科技有限公司××
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