摘要
为满足电力牵引传动系统高速实时仿真的需求,分析了交直交牵引传动系统的结构及其原理,建立了现场可编程门阵列硬件在环(HIL)仿真模型,其中包含单相脉冲整流器、中间直流回路、三相两电平逆变器以及异步电机四部分。对于含有开关器件的结构——逆变器和整流器,分别推导出它们不同状态下各自开关函数的逻辑表达式,考虑了变流器电流过零点时的换流情况。采用状态方程及矩阵方程分别对变流器以及异步电机进行建模,并将数学模型集成在FPGA中加以实现,在RT-LAB实时仿真器上进行HIL仿真,验证了仿真平台的正确性。由于采用FPGA模拟牵引传动系统,充分发挥了其善于并行计算的特性,大幅缩短了仿真的步长,突破了中央处理器速度限制,实现了微秒级系统模型实时仿真,提高了HIL仿真系统的响应速度以及准确度。
The structure and principle of electric traction drive system are analyzed, and a field-programmable gate array（FPGA） model is built for hardware-in-the-loop（HIL） simulation, to meet the demand of real-time high speed simulation. This model consists of a single-phase rectifier, the DC-link circuit, a three-phase two-level inverter and asynchronous motors. For the inverter and rectifier which include switching devices, logical expression functions are derived under different switching states. State equations and matrix equations are applied in modeling converters and asynchronous motors respectively. In addition, the mathematical model is integrated into the FPGA chip. The test on HIL simulation in the RT-LAB real-time simulator has verified this FPGA model. As a result, the simulation step decreases sharply, breaking the speed limit of general-purpose processor. The real-time HIL simulation method at microsecond level improves the response speed and accuracy of the electrical traction drive system modeling.
出处
《电工技术学报》
EI
CSCD
北大核心
2016年第8期189-198,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金--高铁联合基金重点项目(U1134205)
国家自然科学基金(51207131
51277153)资助
关键词
现场可编程逻辑阵列
微秒级
硬件在环
电力牵引传动系统
实时仿真
交直交
Field-programmable gate array
microsecond
hard-in-the-loop
electric traction drive system
real-time simulation
AC-DC-AC
