一种基于dSPACE和FPGA的多模式移相调制设计

The Design of Multi-mode Phase-shift Modulation Method based on dSPACE and FPGA

移相技术在双有源全桥电路、高频隔离电源、多电平变换器等诸多领域应用广泛。鉴于原有dSPACE平台ds1103板卡不具备移相脉冲输出能力,本文利用dSPACE和FPGA搭建应用于移相控制的半实物仿真平台。通过dSPACE实现控制算法,以端口通信方式向FPGA传输移相信息;同时通过FPGA生成移相调制脉冲,输出至相应的驱动模块。该平台具备应用于不同工况下的多种移相模式及切换功能。搭建双有源全桥实验电路验证了所设计算法的正确性。

Phase-shift technology is widely used in dual-active full bridge circuit,high-frequency isolated power supply,multi-level converter and many other fields.As the1103board of dSPACE platform does not have the ability to output shift pulse,a hardware-in-the-loop simulation(HILS)platform based on dSPACE and FPGA is proposed to realize phase-shifting control.The controlal gorithm is achieved by dSPACE and the information of phase-shifting is transported to FPGA throug hport communication.FPGA modulates the shift pulses and transport them to the driver module.This platform can work in different modes of phase-shift.Finally,a DAB circuit is built to verify the correctness of the algorithm.