Three-level SiC AC-to-DC converter reference design
This reference design from Texas Instruments provides an overview on how to implement a three-level, three-phase, SiC-based AC/DC converter with bi-directional 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 switching loss enable higher DC bus voltages of up to 800V and lower switching losses with a peak efficiency of more than 97%. This design is configurable to work as a two-level or three-level rectifier. For design information on the DC/AC implimentation, see TIDA-01606.
The system is controlled by a single C2000 microcontroller (MCU), TMS320F28379D, which generates PWM waveforms for all power electronic switching devices under all operating modes.
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