Exploration of application of three-level inverters based on wide bandgap devices in urban rail traction
The development of urban rail transit aims to achieve green energy savings,and the urban rail traction converter is focused on high power and low loss. Carbon-silicon devices can offer significant advantages such as high temperature resistance,high switching frequency,and low power loss. When used in three-level converters,they can enhance system efficiency,decrease energy consumption,and reduce equipment weight. This study analyzed the current state of power devices and the architecture of urban rail traction converters,determining optimization requirements based on the system's developmental demands. It examined the material properties of carbon-silicon devices,focusing on performance benefits and technical obstacles. The study compared the versatility of five commonly used three-level converter topologies,including traction drive techniques,and discusses the optimization effect of carbon-silicon devices on their output performance. The results are drawn as follows. It can examine the potential utilization of the carbon-silicon three-level converter topology in urban train traction systems,and conduct a comparative analysis of device loss distribution among various topologies using simulated tests. Results show that carbon-silicon systems provide distinct advantages in mitigating power loss,and the implementation of a three-level topology and suitable control method can mitigate application expenses. The integration of carbon-silicon three-level converters in urban rail transit aligns with development requirements and can serve as a resource for future optimization of traction converters in urban rail transit systems.
万方数据
维普
