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11KW BI-DIRECTIONAL OBC

Release time:

2023-05-24 11:02

PROJECT INTRODUCTION

This reference design is a 6.6kW bi-directional OBC base on full SiCdevices design, with single-phase & three-phase compatible AC input.and maximum output power is 6.6KW for single-phase input and11KW for three-phase input. PFC and LLC are each controlled by oneDSP respectively. PFC bus voltage can be regulated in real timeaccording to the output voltage, which optimizes LLC operation andimprove system efficiency. While in reverse operation, the invertoutput is maximum 6.6KW single-phase 220Vac.

DESIGN SPECIFICATION

Input Voltage	380Vac/220Vac
Output Voltage	240~500Vdc
Rated Power	11KW/6.6KW
System Efficiency	Peak 96%
PF	PF >0.99
Switching Frequency	PFC：45KHz；LLC：80KHz~300KHz

FEATURES

· Full SiC design, lower switching loss, higher efficiency, peak up to 96%:

· Bi-directional design, charge forward or invert single-phase AC output:

· Compatible with 6.6KW single-phase input and 11kW three-phase input;

· Digital control, completely eliminate the zero-crossing distortion of totempole PFC:

· Two DSP controller design, PFC BUS can be regulated in real time tooptimize the system efficiency according to the output voltage.

· CAN communication;

· Full protection, including input OVP/UVP/OCP, BUS OVP, output OVP/UVPOCP, and short circuit protection:

MAIN TOPOLOGY

MAIN DEVICES

Function	Part Number	Brand
PFC MOS	C3M0065120K	Wolfspeed
LLC Primary MoS	C3M0065120K	Wolfspeed
LLC Secondary MOS	C3M0032120K	Wolfspeed
Current Sensor	MCA1101-50-5	Aceinna