16KW HVAC solution base on SiC device

Release time:

2023-06-01 17:47

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PROJECT INTRODUCTION
This solution used Wolfspeed's SiC devices to instead of traditionaIGBT module for HVAC systems, which can significantly improve thesystem performance and has more cost effective. The compressorcontrol frequency was set to 16KHz to reduces audible noise.Meanwhile, the system efficiency is much higher compared withtraditional IGBT devices, especially with light load. The standby powerconsumption is lower to meet the standby energy efficiency standard
 
DESIGN SPECIFICATION
Input Voltage 38OVac
Output Voltage 25A
Rated Power 16KW
Switching frequency 16KHz
System Efficiency >98%

 

FEATURES

· Higher system efficiency with SiC device;

· Sensorless FOC algorithm simplifies system design;

· SiC synchronous rectification, high system efficiency:

· 16KHz switching frequency, smaller dead time, iTHD & noise;

· RS485 communication for upper monitor;

· 4-20mA analog current parallel communication, faster response:

 

MAIN TOPOLOGY

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MAIN DEVICES
 
Function Part Number Brand
SiC MOS C3M0040120K Woltspeed
Input bridge DSP45-16A APL
Isolated communication NSiP894X Novosense
Current sensor MCA1101-50-3 Aceinna

 

 MEASUREMENT RESULTS AND WAVEFORMS

 

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Efficiency.vs.Io

 

 

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ITHD.Vs.Standard curve

 

 

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Turn on Vgs&Id&Vds@700V 44A

 

 

picDiode temperature @ full load

picSiC MOS temperature @ full load

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16KW HVAC solution base on SiC device

2023-06-08