CAJ | 학술논문

辅助逆变器为电力机车辅助设备供电,其性能将直接影响电力机车的整体运行情况。本文所述辅助逆变器核心控制系统采用基于浮点数字信号处理器( digital signal processor, DSP)和现场可编程门阵列( field programmable gate array, FPGA)的系统架构。以FPGA部分为重点,采用了一种基于矢量旋转的简化三电平空间矢量脉宽调制( space vector pulse width modulation, SVPWM),并通过三角函数运算的简化、高效率除法器等关键性设计避免DSP进行大量三角函数运算,减少硬件资源占用。实现了基于FPGA的AD采样与数据处理及DSP与FPGA之间基于双端口RAM的异步通信,充分利用了FPGA强大的高速并行处理能力。最后,搭建基于RT-LAB与辅助逆变器核心控制系统的半实物实验平台,实验结果证明了辅助逆变器核心控制系统FPGA部分设计方案的可行性与正确性。
보조역변기위전력궤차보조설비공전,기성능장직접영향전력궤차적정체운행정황。본문소술보조역변기핵심공제계통채용기우부점수자신호처리기( digital signal processor, DSP)화현장가편정문진렬( field programmable gate array, FPGA)적계통가구。이FPGA부분위중점,채용료일충기우시량선전적간화삼전평공간시량맥관조제( space vector pulse width modulation, SVPWM),병통과삼각함수운산적간화、고효솔제법기등관건성설계피면DSP진행대량삼각함수운산,감소경건자원점용。실현료기우FPGA적AD채양여수거처리급DSP여FPGA지간기우쌍단구RAM적이보통신,충분이용료FPGA강대적고속병행처리능력。최후,탑건기우RT-LAB여보조역변기핵심공제계통적반실물실험평태,실험결과증명료보조역변기핵심공제계통FPGA부분설계방안적가행성여정학성。
Auxiliary inverter is used to power supply electric locomotive auxiliary devices and its operation performance affects the operation of electric locomotive directly. A new system structure based on DSP and FPGA was adopted to the auxiliary inverter core control system. A simplified three-level space vector pulse width modulation( SVPWM) algorithm which can relieve digital signal processor ( DSP/MCU) from heavy computation task through the simplified design of multiplier and divider units was adopted to the auxiliary inverter core control system. In order to make full use of high-speed parallel processing ability of FPGA, implementation scheme of AD capture and data processing, asynchronous communication between DSP and FPGA based on dual-port RAM were proposed in this paper. Finally, accuracy and feasibility of FPGA part in the auxiliary inverter core control system were verified by hardware-in-loop experimental platform based on RT-LAB and the auxiliary inverter core control system.