TI TIDA－010039三相SiC AC－DC转换器参考设计

TI公司的TIDA－010039是三级三相SiC AC／DC转换器参考设计,提供了如何实现具有双向功能的三级三相基于SiC的AC／DC转换器.其高开关频率50kHz降低滤波器设计中的磁性元件尺寸,从而获得更高的功率密度. SiC MOSFET具有低开关损耗,使得更高的DC总线电压高达800V,较低开关损耗具有峰值效率大于97%.参考设计的输入为380–400 VAC峰值,DC输出为800V,在400-VAC 50或60-Hz电网连接时,最大输出功率为10-kW, 10-kVA,隔离驱动器ISO5852S具有增强的绝缘性能,用来驱动高压SiC MOSFET,而UCC5320S则用来驱动中等Si IGBT.采用AMC1301来监测负载电流,而TMS320F28379D控制卡用来数字控制.主要用在DC充电桩,电动汽车充电站功率模块,能量存储转换系统(PCS)和三相UPS.本文介绍了三相SiC AC／DC转换器参考设计TIDA-010039主要特性,框图和主要系统指标,以及电路图.
This reference design provides an overview on how to implement a three-level, three-phase, SiC-based AC／DC converter with bidirectional functionality. A high switching frequency of 50 kHz reduces the size of magnetics for the filter design and as a result a higher power density. SiC MOSFETs with low switching loss enable higher DC bus voltages of up to 800 V and lower switching losses with a peak efficiency of > 97%.
This design is configurable to work as a two-level or three-level rectifier. For design information on theDC／AC implementation, see TIDA-01606.
Newer generations of Electric Vehicles (EVs) are pushing the battery capacity and charging rates higher and higher to meet consumer demand for longer range and less time spent with the vehicle plugged in. To support these new trends, EV charging stations need to supply more power than ever before.
In addition to higher power levels, additional trends in the EV charging market are pushing the technology in other fronts:
1. Higher voltage batteries
2. Bidirectional power flow
3. Increased power density
By increasing battery voltage, more power to the vehicle can be realized at the same current levels. This also maintains or reduces the amount of copper and results in smaller power devices required in the powe...