MVME133-1
MVME133-1前面分析的都是理論情況,實際上還要復雜一點,比如PI控制器的輸出要經過一個計算周期才能更新一次,PWM計算模塊計算的三極管門信號大可能延遲一個斬波周期,逆變器(比如IGBT)從接收到信號到管子作用也要一個時間,以及反饋電流的採集、濾波都有延遲時間,這些要麼是延時環節,要麼是慣性環節,都會影響帶寬,引入這些環節的電流環設計與前面所述的方法是一致的,只是略復雜一點(即將這些量與繞組一起等效成一個大的慣性環節)。當然,一般這些量與電機的電氣時間常數 相比都比較小,大多數情況下為簡單期間可以先忽略。
MVME133-1
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