This article deals with the design and laboratory implementation of a full-scale physical simulator of an all-silicon carbide (SiC) traction motor drive for light-rail transit systems (LRTS) with onboard supercapacitor energy storage system (ESS). It consists of a pulsewidth modulation (PWM) rectifier representing the 750 V dc catenary line, a three-phase two-level PWM traction inverter to drive a three-phase squirrel-cage traction motor, a flywheel coupled to the motor shaft to represent the dynamic behavior of the transportation vehicle, a loading generator connected to the grid via a dc-link converter with active front-end, and a supercapacitor ESS containing a bidirectional dc–dc converter supplied from the common dc link. The PWM rectifier, a traction inverter, and a bidirectional dc–dc converter are all SiC power MOSFET-based converters for high efficiency and high power density. A physical simulator is a valuable tool in the design and testing of all SiC converters. It is equipped with software programs for a catenary model, rail track model, and vehicle model, and permits the performance verification of various control, modulation, and energy-saving strategies. The physical simulator system developed in this article also allows the performance verification of a vehicle formation on a prespecified real track and evaluation of benefits of the onboard supercapacitor ESS in real time.

中文翻译：

---

用于轻轨公共交通的带有车载超级电容器 ESS 的全 SiC 牵引电机驱动器的全尺寸物理模拟器

本文介绍了用于带有车载超级电容器储能系统 (ESS) 的轻轨交通系统 (LRTS) 的全碳化硅 (SiC) 牵引电机驱动器的全尺寸物理模拟器的设计和实验室实现。它由代表 750 V 直流悬链线的脉宽调制 (PWM) 整流器、驱动三相鼠笼式牵引电机的三相两电平 PWM 牵引逆变器、连接到电机轴以代表电机轴的飞轮组成。运输车辆的动态行为、通过具有有源前端的直流链路转换器连接到电网的负载发电机，以及包含从公共直流链路供电的双向 dc-dc 转换器的超级电容器 ESS。PWM整流器，牵引逆变器，和双向 dc-dc 转换器都是基于 SiC 功率 MOSFET 的转换器，具有高效率和高功率密度。物理模拟器是设计和测试所有 SiC 转换器的宝贵工具。搭载接触网模型、轨道模型、车辆模型的软件程序，可进行各种控制、调制、节能策略的性能验证。本文开发的物理模拟器系统还允许在预先指定的真实轨道上验证车辆编队的性能，并实时评估车载超级电容器 ESS 的优势。并允许对各种控制、调制和节能策略进行性能验证。本文开发的物理模拟器系统还允许在预先指定的真实轨道上验证车辆编队的性能，并实时评估车载超级电容器 ESS 的优势。并允许对各种控制、调制和节能策略进行性能验证。本文开发的物理模拟器系统还允许在预先指定的真实轨道上验证车辆编队的性能，并实时评估车载超级电容器 ESS 的优势。