VBF6GE施耐德開關(guān)直接特價

全國免費(fèi)銷售熱線：400-021-6858

制動單元定義和功能

定義：制動單元，全稱為“變頻器專用型能耗制動單元”，或者是“變頻器專用型能量回饋單元”，主要用于控制機(jī)械負(fù)載比較重的、制動速度要求非常快的場合，將電機(jī)所產(chǎn)生的再生電能通過制動電阻消耗掉，或者是將再生電流反饋回電流。

功能：在某些應(yīng)用場合，需要快速降速，根據(jù)異步電動機(jī)原理可知，若滑差越大轉(zhuǎn)矩也越大，同理制動轉(zhuǎn)矩將隨著降速速率的加大而增大，使系統(tǒng)降速時間大大縮短，能量回饋大大加快，直流母線電壓快速上升，因此必須將該回饋能量迅速消耗掉，保持直流母線電壓在某一安全范圍以下。制動單元系統(tǒng)的主要功能就是能快速將該能量消耗掉（能量由制動電阻轉(zhuǎn)換成熱能散發(fā)）。它有效的彌補(bǔ)了普通變頻器的制動速度慢、制動轉(zhuǎn)矩小（≤20%額定轉(zhuǎn)矩）的缺點(diǎn)，對于一些需快速制動但頻度較低的場合非常適用。

固話：021-60952290轉(zhuǎn)815

手機(jī)：13671890267

商務(wù)qq：2851096297

 

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