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 |
MEASUREMENT RESULTS AND WAVEFORMS
iTHD<10% @ fullload range
Efficiency curve
Iin@0.1A load
Iin@0.2A load
Iin@0.3A load
Iin@0.5A load
Output voltage soft start-up
Vds @full load
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400W 3-phase input industrial fan motor drive
2023-05-24
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