面向分布式负载的模块化三端口功率系统

电气工程学报 ›› 2015, Vol. 10 ›› Issue (4): 91-98.

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面向分布式负载的模块化三端口功率系统

张君君,吴红飞,葛红娟,邢岩,曹锋

南京航空航天大学江苏省新能源发电与电能变换重点实验室南京 210016

收稿日期:2014-11-02 出版日期:2015-04-25 发布日期:2015-04-25
作者简介:张君君:男,1986年生,博士研究生,研究方向为电力电子与电力传动|吴红飞:男,1985年生,博士,研究方向为电力电子与电力传动
基金资助:
国家自然科学基金(51377083);江苏省高校优秀科技创新团队项目,民航局科技创新基金(MHRD20130214);江苏自然科学基金(BK2012794)

Power System with Modular Three-Port Converters for Distributed Loads

Zhang Junjun,Wu Hongfei,Ge Hongjuan,Xing Yan,Cao Feng

Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

Received:2014-11-02 Online:2015-04-25 Published:2015-04-25

摘要/Abstract

摘要：

面向具有复杂分布式用电负载需求的航天器,提出一种基于三端口变换器（TPC）的供电系统架构及其功率控制策略。该系统以TPC为基本单元,通过将各TPC模块的输入端口和双向功率端口分别并联连接,实现输入能源、储能装置和多个分布式负载之间的供电。针对各分布式负载输出功率不同且单个TPC含有3条功率路径,可能导致系统中各传输路径功率不确定的问题,提出一种混合型系统功率控制策略以实现各模块各功率路径可控及系统功率优化管理,具体而言,即在储能装置充电工况下均衡储能装置的充电电流,在储能装置放电工况下按输出需求分配输入功率。分析和实验表明,系统可以在各工作状态下稳定运行并在各工作状态之间自由切换。

关键词: 三端口变换器, 直流分布式供电系统, 航天器供电系统, 分布式控制, 直流微电网

Abstract:

A novel power system for distributed loads (PSDL)with modular three-port converters (TPC) and its power management were proposed for spacecraft in this paper. The PSDL was composed of several TPC modules, interfacing energy source, energy storage element (ESE) and distributed loads, with the input and bidirectional ports connected in parallel, respectively. Considering that the output loads are distributed and there are three power paths in each TPC, it's difficult to determine the power transferred on each path of the PSDL. To achieve accurate power distribution of the multiple ports, a system level hybrid power control was proposed, i.e., current-sharing control when the ESE charges and power control based on requirements of loads when the ESE discharges. With the proposed control, the PSDL can achieve stable operations under different working states and smooth switching between them. Experimental results demonstrate the feasibility and effectiveness of the proposed system structure and hybrid power control.

Key words: Three-port converter, DC distributed power system, spacecraft power system, distributed control, DC microgrid

中图分类号:

TM464
V44

张君君,吴红飞,葛红娟,邢岩,曹锋. 面向分布式负载的模块化三端口功率系统[J]. 电气工程学报, 2015, 10(4): 91-98.

Zhang Junjun,Wu Hongfei,Ge Hongjuan,Xing Yan,Cao Feng. Power System with Modular Three-Port Converters for Distributed Loads[J]. Journal of Electrical Engineering, 2015, 10(4): 91-98.

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参数	数值	参数	数值
输入电压/V	40~60	输入功率/W	0~250
输出电压/V	28	输出功率/W	200
蓄电池电压/V	22~26	输入滤波电容/μF	330
输出滤波电容/μF	200	变压器励磁电感/μH	36
输出滤波电感/μH	100	变压器匝比	1.75
一次侧开关管	IRFS4321	二次侧开关管	IRFS4229
开关频率/kHz	100	DSP	MC56F8247

面向分布式负载的模块化三端口功率系统

Power System with Modular Three-Port Converters for Distributed Loads

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