摘要
针对当前直流负载缺乏再生反馈能力且功率跟踪性能不足的状况,给出了一种具有再生反馈能力的可控直流负载,以便充分研究燃料电池混合动力系统能量管理策略在各种功率状况下的控制作用。为了实现能量的双向流动,设计了由Buck-Boost双向DC/DC变换器和蓄电池构成的主电路拓扑;给出了一种多环路控制方式,以有效改善负载的功率跟踪性能。Matlab/Simulink仿真结果表明:所给出的具有再生反馈能力的可控直流负载能够实现功率的双向流动,同时具有良好的功率跟踪性能。
As the situation that the presently available DC load lacks power reversal capability and its power tracking performance is inadequate, a controllable DC load with regenerative feedback capability is proposed, in order to adequately research the control operations of the fuel cell hybrid power system energy management strategy during the various power conditions. For the controllable DC load, the main circuit topology composed of bidirectional Buck-Boost DC/DC converter and battery is adopted to accommodate bidirectional power flow; multi-loop control is proposed as the control method to effectively improve the power tracking performance. The simulation results of Matlab/Simulink show that the proposed controllable DC load with regenerative feedback capability can accommodate bidirectional power flow, and has high power tracking performance.
出处
《电气技术》
2014年第1期34-37,共4页
Electrical Engineering
