400W 3-phase input industrial fan motor drive

Release time:

2023-05-24 14:42

pic

PROJECT INTRODUCTION
This reference design is designed to convert a single-phase input fandrive to a three-phase input. For single-phase input, the fan drive busvoltage is 400Vdc. To adapt different input, the three-phase AC inputis first boost to 700Vdc and then buck to 400Vdc. Three-phase PFCand Buck converter are controlled by one MCU and the fan drive iscontrolled by another one. The reference design achieves therequirement of iTHD smaller than 20% at 10% load.
 
DESIGN SPECIFICATION
Input Voltage 380Vac+-10%
Output Voltage 400Vdc
Rated Power 400W
System Efficiency >90%

 

FEATURES

· Active 3 phase 6 switches PFC

· MCU control PFC+buck; SVPWM algorithm for optimized low iTHD design;

· 400Vdc output, fully compatible with single-phase motor drive

· Easy to expand power rating without change topology;

· Total solution,3 phase PFC+buck+motor drive:

· Full protection, include input UVLO & OVP, output OCP & OVP

 

MAIN TOPOLOGY

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MAIN DEVICES
 
Function Part Number Brand
Input Fuse 0443002.DR Littelfuse
PFC & Buck MOS IXFQ8N85X IXYS
Buck Diode IVID1200502 Invertchip
Current Sensor MCA1101-05-5 Aceinna
Driver NSi6801C-DSWFR Novosense
AUX-Power MOSFET IXTH2N15 IXYS

 

 MEASUREMENT RESULTS AND WAVEFORMS

 

piciTHD<10% @ fullload range

picEfficiency curve

 

 

picIin@0.1A load

picIin@0.2A load

 

 

picIin@0.3A load

picIin@0.5A load

 

 

picOutput voltage soft start-up

picVds @full load

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400W 3-phase input industrial fan motor drive

2023-05-24