To address issues of low control accuracy,lagging response and reverse overshoot in the dynamic power control of range extender for electric vehicles,a dynamic power control strategy based on power-speed dual loop was proposed.In this strategy,the generating power was decoupled into torque and speed based on an efficient operating curve.Additionally,the target generating torque correction based on the actual generating power feedback and dynamic coordination correction of generating torque speed were considered.The test results show that during the power generation process of the range extender,the maximum positive overshoot is 1.37 kW while the maximum negative overshoot is 1.89 kW,and the steady-state error is less than 0.01 kW.Rising response time is about 2.5 s while falling response time is about 2.8 s.Moreover,all operation points are near efficient operating curves.Therefore,the proposed dynamic control strategy for power generation can reduce the response lag and reverse overshoot of the transient power generation,which is feasible in engineering practice.
关键词
电动汽车/增程器/发电功率/动态控制策略/双闭环控制
Key words
electric vehicle/range extender/generation power/dynamic control strategy/double closed-loop control
维普
万方数据