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400W 3-phase input industrial fan motor drive

Release time:

2023-05-24 14:42

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

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