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为涵盖牵引变流器所有可能开关状态以及进一步减小硬件在环(hardware-in-the-loop,HIL)仿真步长,该文提出一种基于混合逻辑动态(mixed logical dynamic,MLD)模型的电力牵引传动系统HIL仿真,并于现场可编程门阵列(field-programmable gate array,FPGA)上实现。结合开关器件驱动信号,推导不同电流、电压条件下的开关函数逻辑表达式,依此建立二重化单相脉宽调制(pulse width modulation,PWM)整流器和三相PWM逆变器的MLD模型。合理分配系统各模块计算顺序,使系统计算步长约束在500ns内。HIL仿真与Simulink仿真对比,结果验证了HIL仿真的正确性和有效性。相较于基于通用处理器的HIL仿真,MLD模型和FPGA的结合进一步减小了仿真步长,能及时反应开关动作。
To cover all possible switching states of the traction converter and to further reduce hardware-in-the-loop (HIL) simulation steps, a mixed logic dynamic (MLD) Power Traction Drive HIL simulation, and in the field programmable gate array (field-programmable gate array, FPGA) to achieve. Combined with the driving signals of switching devices, the logic expressions of switching functions under different current and voltage conditions are deduced. Based on this, the MLD model of dual-phase pulse width modulation (PWM) rectifier and three-phase PWM inverter is established. Rational distribution of the calculation of the order of the various modules of the system, so that the calculation of the system constraints within 500ns. HIL simulation and Simulink simulation comparison, the results verify the correctness and effectiveness of HIL simulation. Compared with the general-purpose processor-based HIL simulation, the combination of the MLD model and the FPGA further reduces the simulation step size and prompts the switch action in time.