通过基于FPGA的MMC模型实现的对工业控制器的半实物仿真测试

OPAL-RT

Abstract

Since Modular Multilevel Converters (MMC) have a sophisticated control, the real time simulation platform becomes critical for hardware-in-the-loop (HIL) test of the actual controllers in various scenarios before commissioning. This paper presents a multi-rate real time simulator that is able to simulate electromagnetic transients of MMC systems and connect to industrial controllers through fiber optics and copper wires for HIL tests. The MMC is implemented in field-programmable gate array (FPGA) with a sub-μs time step and the rest of the power system is simulated in the central processing unit (CPU) with a time step of 10~50 μs. Input and output (I/O) drivers are implemented in the same FPGA for a fast-rate and low-latency communication. Each FPGA accommodates up to 1530 sub-modules (SM), and multiple FPGA connected to one simulator can simulate MMC with more SM and multi-MMC systems. The performance is demonstrated in a 1500-SM MMC study case.

摘要

由于模块化多电子平换流器的精密控制，在其正式启用之前在不同情况中对真实控制器进行硬件在环测试的实时仿真平台变得至关重要。这篇论文介绍了一种可仿真MMC系统电磁暂态过程并可通过光纤和铜线与工业控制器连接进行HIL测试的多频率实时仿真器。MMC被以亚微秒步长在FPGA上进行仿真，其余电力系统的仿真通过CPU以10-50微秒步长来实现。输入和输出（I/O）驱动程序在同一个FPGA上以实现快速、低延迟的通讯。每个FPGA可容纳多达1350个子模块，一个容纳了多个FPGA的仿真器可实现多模块MMC和多MMC系统。仿真性能通过对有1500子模块的MMC案例的研究得到体现。

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