变频器机械部分

1、变频器技术应用试题库一、 选择题1、 正弦波脉冲宽度调制英文缩写是（ C ）。A：PWM B：PAM C：SPWM D：SPAM2、对电动机从基本频率向上的变频调速属于（ A ）调速。A：恒功率 B：恒转矩C：恒磁通 D：恒转差率3、下列哪种制动方式不适用于变频调速系统（ C。

2、测试部测试规范 变频器机械可靠性 测试规范 拟 制 黄国华 日 期 2010 08 01 审 核 日 期 批 准 日 期 规范编码 INVT0 018 0002 TB 01 版 本 V1 0 密 级 机 密 测试规范 英威腾电气股份有限公司 测试部 生效日期 2010 08 页 数 24 页 测试部测试规范 第 2 页 共 24 页 更 改 信 息 登 记 表 规范名称 变频器机械可靠性测试规范。

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