谐波试验用宽频大电流发生装置研究

Research on broadband high current generator for harmonic testing

宽频大电流发生装置,通常被广泛应用于电力部门的谐波电流测试及谐波成份分析等场合,一般做法都是通过宽频升流器或者线性功率放大器,前者缺点是无法通过直流大电流,后者缺点是电源效率低,特别在输出电压为低电压、输出电流为大电流时。本文介绍的采用随动电源方法既解决了输出直流电流的问题,又提高了线性功率放大器的工作效率,从直流到100次以上的谐波电流,输出能力均达到500A。目前在谐波误差测试领域以及宽频大电流等多种场合得到广泛应用,具有良好的使用体验。

Broadband high current generation device, harmonic current test and harmonic component analysis, which widely used in electric power department. The general practice is the current booster or broadband linear power amplifier. The disadvantage is not through the direct current power supply. The latter shortcoming is low efficiency, especially in output voltage for low voltage. The output current of the current, this paper describes the use of the power method not only solves the problem of output DC current and improve the working efficiency of the linear power amplifier, from DC to harmonic current is more than 100 times, the output capacity reached 500 A, has been widely used in various occasions testing field and broadband high current harmonic error so, have a good experience.