WANG Y, ZHAO L S, SHI S Q, et al.Design of energy feedback electronic load for characteristic test of miniature circuit breaker[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(3):118-128.

doi:10.16186/j.cnki.1673-9787.2021110060

Received:2021/11/05

Revised:2022/01/14

Published:2023/05/25

Design of energy feedback electronic load for characteristic test of miniature circuit breaker

WANG Yao1,2, ZHAO Lishuai1,2, SHI Shunquan3, HOU Linming4, XIE Zhenhua4

1.State Key Laboratory of Reliability and Intelligence of Electrical Equipment，Hebei University of Technology，Tianjin  300130，China;2.Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province，Hebei University of Technology，Tianjin  300130，China;3.Abin Instrument Co.，Ltd.，Tianjin  300410，China;4.Zhejiang Mechanical and Electrical Products Quality Inspection Institute Co.，Ltd，Hangzhou  310000，Zhejiang，China

Abstract:In order to meet the needs of miniature circuit breaker characteristic test under the goal of “double carbon”，aiming at the poor dynamic performance of traditional repetitive control methods，a dual mode PI control strategy of energy feedback electronic load for miniature circuit breaker test was proposed.The structure of parallel connection of odd and even harmonic internal modes was adopted as the improved internal mode and combined with PI controller，which could not only effectively suppress odd and even harmonics，but also realized fast and accurate tracking of command current.The simulation model of energy feedback electronic load was built，and the device prototype was developed.The simulation results were consistent with the experimental results to verify the effectiveness of the proposed method.The results showed that the energy feedback electronic load could achieve stable current output in three fundamental wave cycles after startup，and could complete current switching in half fundamental wave cycle.At the same time，the output current distortion rate，output error，and energy feedback efficiency were 2.98%，0.2%，and 92.4% under full load conditions，which met the characteristic test requirements of miniature circuit breaker.

Key words:electronic load;miniature circuit breaker;internal model principle;energy feedback

用于小型断路器特性试验的能馈型电子负载设计_王尧.pdf