200KW motor drive base on discrete SiC device

Release time:

2023-05-24 11:24

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PROJECT INTRODUCTION
This reference solution is based on Wolfspeed discrete SiC devices inmultiple parallel to reach up to 200kW power. DSP digital controlsthe permanent magnet synchronous motor, and APL self-developedhigh power SiC drive core directly drives the six parallel SiC devices.The system is designed with a independent drive board to improvethe driver imbalance problem. SiC devices improves the systemefficiency and increases the range of electric vehicles by 10%.
 
DESIGN SPECIFICATION
Input Voltage 450~650Vdc
Output Voltage 400A
Rated Power 200KW
Switching Frequency 10KHz
System Efficiency >99%

 

FEATURES

· Multi parallel SiC devices, supporting up to 200kW:

· Compact design, power density up to 50 kW/L:

· High efficiency, peak up to 99.3%;

· Full digital control;

· SiC driver core provides short-circuit protection and fault reporting;

· Competible for 12,000 rpm high-speed motor, 30Hz to 1KHz output;

 

MAIN TOPOLOGY

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MAIN DEVICES
 
Function Part Number Brand
SiC MOSFET SiC MOS Wolfspeed
Driver Core APD202 APL

 

 MEASUREMENT RESULTS AND WAVEFORMS

picEfficiency Vs.Po

picPeak torque & Efficiency & rpm

 

picFull load current

picShort circuit protection

 

picStarting up, Vgs&Id1&Id2&Id3

picShutting down, Vgs&Id1&Id2&Id3

 

picSiC body diode reverse recovery

picThermal test

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200KW motor drive base on discrete SiC device

2023-05-24