A20B-2901-0980;
供应A20B-2901-0980;
A20B-2901-0980;
变频器(Variable-frequencyDrive，VFD)是应用变频技术与微电子技术，通过改变电机工作电源频率方式来控制交流电动机的电力控制设备。变频器主要由整流(交流变直流)、滤波、逆变(直流变交流)、制动单元、驱动单元、检测单元微处理单元等组成。变频器靠内部IG的开断来调整输出电源的电压和频率，根据电机的实际需要来提供其所需要的电源电压，进而达到节能、调速的目的，另外，变频器还有很多的保护功能，如过流、过压、过载保护等等。
变频器输出为PWM波，含有较多的高次谐波。变频功率传感器通过对输入的电压、电流信号进行交流采样，再将采样值通过电缆、光纤等传输系统与数字量输入变频功率分析仪，数字量输入变频功率分析仪对电压、电流的采样值进行运算，可以获取电压有效值、电流有效值、基波电压、基波电流、谐波电压、谐波电流、有功功率、基波功率、谐波功率等参数。
产品已广泛应用于冶金、矿山、造纸、化工、建材、机械、电力、以及建筑系统等所有工业传动领域。
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