摘要：目今，变频手艺已经获得了普遍使用，可是变频电量的计量却是空缺
。本文提出了一种用于计量和测试产品性能的大宗程宽规模变频功率标准源的设计
。接纳DDS作为信号爆发器，划分爆发一定频率的电压信号和电流信号，信号控制全桥开关功率放大器，再驱动线性功率放大器，划分输出电压和电流，并对电压电流举行丈量并反响回控制器，用PI算法举行闭环控制，从而使功率源输出电压及输出电流的真有用值坚持稳固
。实验效果批注，系统运行稳固，电压电流输出精度高，抵达了0.1级
。

要害词： 功率标准源 变频 DDS

中图分类号：TM933  文献标识码： B  

The research of a wide range frequency conversion standard power source

      Liu Liangjiang¹ Chen Haowei² Peng Zhengliang¹ Wang Ning² Liao Zhongchi²

(1. Hunan Institute Of Metrology & Test, Changsha, 410014; 2. Hunan YINHE ELECTRIC CO. LTD, Changsha, 410073)

Abstract: Nowadays，frequency conversion technology is widely used，but the measurement of frequency conversion energy is blank. The paper presents a new design of wide range frequency conversion standard power source, which is widely used to measure and test product performance. Two DDS are used as signal generators, which individually generate voltage signal and current signal of certain frequency. The signal control switch mode power amplifier, which drive linear power amplifier, Then voltage and current are output. The voltage and current are measured and the signal are feed back to main controller, which control the output using PI arithmetic to keep the effective value of the output voltage and current steady. The experiment result shows that the system run stable and the precision of output voltage and current reached 0.1 grade.

Key words: standard power source, frequency conversion, Direct Digital Synthesizer

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