1、變頻器技術應用試題庫一、 選擇題1、 正弦波脈沖寬度調(diào)制英文縮寫是（ C ）。A：PWM B：PAM C：SPWM D：SPAM2、對電動機從基本頻率向上的變頻調(diào)速屬于（ A ）調(diào)速。A：恒功率 B：恒轉(zhuǎn)矩C：恒磁通 D：恒轉(zhuǎn)差率3、下列哪種制動方式不適用于變頻調(diào)速系統(tǒng)（ C。

2、測試部測試規(guī)范 變頻器機械可靠性 測試規(guī)范 擬 制 黃國華 日 期 2010 08 01 審 核 日 期 批 準 日 期 規(guī)范編碼 INVT0 018 0002 TB 01 版 本 V1 0 密 級 機 密 測試規(guī)范 英威騰電氣股份有限公司 測試部 生效日期 2010 08 頁 數(shù) 24 頁 測試部測試規(guī)范 第 2 頁 共 24 頁 更 改 信 息 登 記 表 規(guī)范名稱 變頻器機械可靠性測試規(guī)范。

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