This article, based on modeling and scaling as well as simulation and experiment, provides a comprehensive discussion on a real-time real-power emulator for a medium-voltage, high-power, high-speed motor drive. A three-phase modular multilevel double-star chopper-cell (DSCC) inverter under test is connected in front-to-front (FTF) with the emulator. The DSCC inverter is the same in circuit configuration as the DSCC rectifier. This emulator is characterized by integrating mechanical dynamics of both motor and load into it. The power-electronic circuit of the emulator consists of a three-phase DSCC rectifier, three ac inductors, and a single two-winding common-mode inductor at the dc side. This article starts with modeling and scaling of a three-phase 6.6-kV 10.9-MW four-pole 9000-r/min induction motor drive. Then, the authors design, build, and test a three-phase 200-V 10-kW downscaled test bench. Experimental waveforms from the 10-kW test bench, as well as simulated waveforms from the 10.9-MW full-scale and 10-kW downscaled systems, lead to the following conclusion: The emulator can reproduce both electrical and mechanical dynamics of the three-phase 200-V, 10-kW, four-pole, 9000-r/min induction motor coupled with a centrifugal compressor.

中文翻译：

---

中压高速电气驱动器的实时有功仿真器：机械振动的讨论

本文基于建模和缩放以及仿真和实验，对中压，大功率，高速电机驱动器的实时有功功率仿真器进行了全面的讨论。待测的三相模块化多级双星斩波器（DSCC）逆变器与仿真器从前到前（FTF）连接。DSCC逆变器的电路配置与DSCC整流器相同。该仿真器的特点是将电动机和负载的机械动力学集成到其中。仿真器的功率电子电路由一个三相DSCC整流器，三个交流电感器和一个直流侧的单个两绕组共模电感器组成。本文从三相6.6 kV 10.9 MW四极9000 r / min感应电动机驱动器的建模和缩放开始。然后，作者设计，建造，并测试三相200V 10kW缩减规模的测试平台。来自10 kW测试台的实验波形，以及来自10.9 MW满量程和10 kW缩减规模系统的仿真波形，得出以下结论：仿真器可以再现三相的电气和机械动力学200V，10kW，四极，9000r / min感应电动机与离心压缩机相连。