摘要
介绍一种用于电工仪表测试的高精度、高稳定性电流源。该电流源主电路采用单相全桥电压型逆变器结构，利用输出电流瞬时值和整流平均值反馈，滤波电容器电流反馈以及主电路直流电压前馈等构成一多闭环控制系统。实验测试结果表明，该电流源具有波形失真度小，稳定度高，在任何负载情况下都具有良好的性能。
This paper presents the analysis and design of a high precision and high stability current-source for the testing of electrical meters with a single-phase fullbridge inverter.A multiple closed-loop control system is constructed by using the load current feedback and its rectified mean feedback,the current in the capacitor of the load filter feedback,and the dc-link voltage in the inverter main circuit feedforward.The experiments and tests show that the current-source under the proposed scheme offers a low total harmonic distortion of output current waveform and high stability and good performance for any load power factor.
出处
《电机与控制学报》
EI
CSCD
1998年第3期186-189,共4页
Electric Machines and Control
