电器与能效管理技术 ›› 2020, Vol. 594 ›› Issue (9): 46-49.doi: 10.16628/j.cnki.2095-8188.2020.09.009

• 直流变流技术 • 上一篇    下一篇

基于H桥Boost电路能馈型直流电子负载研制

金春阳1, 阮祥勇2, 宋光明2, 黄海宏1   

  1. 1. 合肥工业大学 电气与自动化工程学院, 安徽 合肥 230009
    2. 国网安徽省电力有限公司 合肥供电公司, 安徽 合肥 230061
  • 收稿日期:2020-04-28 出版日期:2020-09-30 发布日期:2020-10-18
  • 作者简介:金春阳(1995—),男,硕士研究生,研究方向为电工理论与新技术。|阮祥勇(1985—),男,工程师,主要从事电力系统及其自动化研究。|宋光明(1984—),男,工程师,主要从事电力系统及其自动化研究。

Development of Energy-Fed DC Electronic Load Based on H-Bridge Boost Circuit

JIN Chunyang1, RUAN Xiangyong2, SONG Guangming2, HUANG Haihong1   

  1. 1. School of Electrical Engineering and Automation,Hefei University of Technology, Hefei 230009, China
    2. Hefei Power Supply Company,State Grid Anhui Electric Power Co.,Ltd., Hefei 230061, China
  • Received:2020-04-28 Online:2020-09-30 Published:2020-10-18

摘要:

针对直流电源低压大电流老化测试所需放电负载,研制了能馈型直流电子负载。前级DC/DC变换器采用H桥Boost电路作为功率电路,实现放电负载特性以及升压和保持输出端电压稳定;后级DC/AC变换器选用TMS320F2812作为主控芯片,采用电流环控制策略以及电网电压前馈控制,使所研制的能馈型直流电子负载能在设定功率下以趋近单位功率因数向电网回馈能量,且并网电流总谐波不超过5%,满足并网要求。

关键词: 电子负载, H桥Boost电路, 电流环控制, 电压前馈控制, 单位功率因数

Abstract:

For the low-voltage,high-current DC power supply aging test requiring discharge load,a feed-type DC electronic load is developed.The pre-stage DC-DC converter uses the H-bridge Boost circuit as the main circuit topology to implement discharge load characteristics and achieve boost and maintain the stability of output terminal voltage.The post-stage DC-AC converter adopts TMS320F2812 as the main control chip and current-loop as control strategy and applies grid voltage feed-forward control,so that this system can approach unity power factor to feed energy back to the grid under a set power,and the total harmonic distortion of the grid-connected current does not exceed 5%,which meets the requirements for grid-connection.

Key words: electronic load, H-bridge Boost circuit, current loop control, voltage feed-forward control, unit power factor

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