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機械零組件設計與使用討論區
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載波振動頻率,變頻器與感側器的羅生門
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mtchang
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Apr 10, 2007, 5:13:58 AM
4/10/07
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to 機械零組件設計與使用討論區
變頻器載波振動頻率引起的問題...
通常使用靜電感應式的sensor
如果在整個電力控制系統中,有變頻器
可能會造成干擾的情形
通常最快的辦法就是降低變頻器載波的頻率,就可以避免到此狀況的發生。
mtchang
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Apr 18, 2007, 8:10:57 PM
4/18/07
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to 機械零組件設計與使用討論區
PWM的載波頻率調正可以改變下列的狀況
1KHz 電磁噪音大 雜音洩漏電流小 熱散逸小 電流波形尖銳
8KHz
15KHz 電磁噪音小 雜音洩漏電流大 熱散逸大 電流波形正旋波
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