用于电能表测试的可编程交流电压电流发生器的设计

The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings. Pub Date : 2004-12-06 DOI:10.1109/APCCAS.2004.1412690

Sarawoot Methawee, E. Leelarasmee

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引用次数: 1

摘要

本文描述了一种用于单相电能表测试的产生两个相同频率交流源的原型设备。它们的振幅、频率和相移可以通过键盘垫来设置。它由参考信号发生器和放大器组成。参考信号由一个微控制器和两个16位串行数模转换器产生。放大器使用电力变压器和反馈运放电路。该电路可以产生可编程的180-250 V/次rms/ (1V/步)和0.2-50 A/次rms/ (0.1A/步)源，满量程误差为0.1%，谐波失真为2%。其频率可在45-55 Hz (0.1 Hz/step)范围内调节，误差为0.1%。相位也可从0-360度调节，1度/步。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A design of programmable AC voltage and current generators for testing energy meters

A prototype equipment that generates two AC sources of the same frequency for testing single phase energy meters is described. Their amplitudes, frequency and phase shift can be set through a keyboard pad. It consists of reference signal generators and amplifiers. The reference signal is generated using a microcontroller and two serial 16 bit digital to analog converters. The amplifiers use power transformers and feedback opamp circuits. The circuit can generate programmable 180-250 V/sub rms/ (1V/step) and 0.2-50 A/sub rms/ (0.1A/step) sources with 0.1% full scale error and 2% harmonic distortion. Its frequency can be adjusted from 45-55 Hz (0.1 Hz/step) with 0.1% error. The phase is also adjustable from 0-360 degree with 1 degree/step.

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The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings.

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