用于非车载充电机现场测试的能馈型充电负载方案

Energy-Feedback Charging Load Scheme for Field Test of Off-Board Chargers

传统的能耗型直流电子负载存在体积大、质量大,受到空间限制,能量损耗大,无法实现动力电池特性等缺点。针对上述问题,结合能馈型直流电子负载和模拟电池技术提出了一种用于非车载充电机现场测试的能馈型充电负载方案。该方案可以大大减小电子负载的体积和重量,电能回馈效率可以达到90%以上,并且可以实现实际的动力电池特性。同时设计的控制策略,可以实现4种典型的控制模式:恒定输入电压、恒定输入电流、恒定输入功率和恒定电阻,并且能够在一定范围内连续调节其工作参数。最后,通过MATLAB/Simulink仿真验证了所提出充电负载的可行性和有效性。

The traditional energy-consuming DC electronic load has the disadvantages:large volume,large mass,limited space,large energy loss and power battery characteristics cannot be realized.Aiming at the above problems,combining energy-feedback DC electronic load and simulation battery technology,an energy-feedback charging load scheme for field testing of off-board chargers is proposed.The volume and weight of the electronic load are reduced significantly,the energy-feedback efficiency can reach 90%or more.And the actual power battery characteristics can be realized.Meanwhile,the control strategy is designed,which can realize four typical control modes including constant input voltage,constant input current,constant input power and constant resistance.The working parameters can be adjusted within a certain range.Finally,the feasibility and effectiveness of the proposed scheme are verified by MATLAB/Simulink simulation.