摘要：利用MMC的AC-HVDC-AC能量转化系统来将分布式能源系统与主电网整合已经成为一种趋势。MMC AC-DC-AC换流器也正被大型HVDC传输系统所采纳。因为大量单元需要被单独以极小的步长仿真，这种多电平换流器对用于控制和保护设计的HIL仿真器提出了一个严峻的问题。这种系统还需在几微秒的时间内管理大量I/O通道。这篇论文展示了利用极小步长仿真MMC的优势，而这是通过基于Intel电脑和FPGA的混合模拟来实现的。MMC被输入FPGA来模拟步长为500纳秒到1微秒的快速传输。AC网络和HVDC总线在电脑上以10微秒到20微秒的慢速步长被仿真。仿真器构造和FPGA及计算机上仿真的组件将会在文中讨论到，慢速和快速系统互联的方法在文中也有涉及。 7 w9 |9 J- a) _! h A6 |* X( \Abstract：AC-HVDC-AC energy conversion systems using modular multilevel voltage-source converters (MMC) are becoming very popular to integrate distributed energy systems to the main grid. MMC AC-DC-AC converters are also being considered for large HVDC transmissions systems. Such multi-level converters pose a serious problem for HIL simulators required for control, protection design and testing due to the large number of cells that must be simulated individually using very small time steps. Such a system also requires managing a very large number of I/O channels within a few microseconds. This paper demonstrates the advantages of using a very small time step to simulate a modular multilevel converter (MMC). To do so, a hybrid simulation is done using Intel PC and FPGA. The MMC is implemented on FPGA to simulate fast transient with a time step of 500 ns to 1 μs. The AC network and HVDC bus is simulated on the PC, with a slower time step of 10 μs to 20 μs. The simulator architecture and the components simulated on the FPGA and on the PC will be discussed, as well as the method allowing the interconnection of this slow and fast system. + K2 w6 ^& g: H7 o7 u' q FPGA-Based Real-Time Simulation of Multilevel Modular Converter HVDC Systems.rar(284.38 KB, 下载次数: 6)
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发表于 2014-7-30 10:17:53
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