Featuring digital control for power factor correction
Future Electronics is featuring the STDES-VRECTFD reference design by STMicroelectronics, a complete solution for high-power three-phase AC/DC rectifier applications based on the Vienna topology.
The design features full digital control through the STM32G474RET3 MCU and provides both digital output voltage regulation and continuous conduction mode (CCM) current regulation for the maximum power quality related to total harmonic distortion (THD) and power factor (PF).
All Features
- Three-phase, three-level AC-DC power converter
- Nominal rate for DC voltage: 800 VDC
- Nominal rate for AC voltage: 400 VAC at 50 Hz
- Maximum power: 15 kW
- Power factor: >0.99
- Inrush current control and soft start-up
- THD lower than 5% at nominal operation
- Power section based on SiC MOSFETs and SiC diodes:
- High frequency operation (70 kHz)
- High efficiency: >98%
- Passive element weight and size reduction
- Control section based on the STM32G474RET3 microcontroller:
- Control and monitoring interfaces: SWD–UART, I²C, and DACs
- 64-pin digital power connector
- LED status as UI
- Four integrated high-performance op-amps for additional features
