基于容差控制的电动汽车动力系统动态负载模拟

Dynamic load emulation for electric vehicle powertrain based on error tolerance control

电动汽车动力系统动态负载模拟通过在试验台上再现动力系统受载和运动状态,使得电动汽车动力系统、电池组和整车能量管理策略测试、研究和开发可以在实验室内进行,是经济而高效的台架测试的核心技术。针对该动态负载模拟中模拟精度和控制算法复杂度的协调问题,本文借鉴传统内燃机动态试验台的评价指标,研究分析了电动汽车动力系统动态负载模拟控制器容许的误差范围,据此设计了适当的动态负载模拟容差控制器,并进行了实物对比测试。测试结果表明,所设计的容差模拟控制器能够满足电动汽车经济性评价要求,简便易行利于推广应用。

Dynamic load emulation for electric vehicle powertrain is an economical and efficient technology for the testing, researching and developing of powertrain, battery and energy management strategy of electric vehicles in a laboratory. But the problem that how to coordinate emulation accuracy and complexity of controller needs to be dealt with for large-scale application. In this paper, the evaluation of engine dynamic test bench is refered to design the tolerance-error boundary of dynamic load emulation. A proper controller is designed according to the boundary. Ex- periments are conducted to test the designed controller. The experimental results show that the error tolerance con. troller can meet the requirements of economic evaluation of electric vehicles and it is effective and simple.