仿电流控制在移相全桥变换器中的仿真研究

为了克服全桥变换器在传统控制模式下对噪声过于敏感、抗干扰能力较差的弊端,提出了一种采用仿电流控制技术的移相全桥变换器.通过重构电流信号实现电流模式控制,可以避免环境因素对电流信号的干扰,增强电路的稳定性.最后进行了仿真验证.仿真结果表明:仿电流控制技术应用在移相全桥变换器中是可行的.

Simulation of Emulated-Current Control in Phase-Shift Full-Bridge Converter

For getting over the disadvantages that the full-bridge converter in conventional control mode is too sensitive to noise and the anti-interference performance is poor,this paper proposes a phase-shift full-bridge converter using the emulated-current control technique,where the current mode control can be realized by regenerating the current signals,which can eliminate the interference of environmental factors on to the current signals,improving the circuit’s stability.Finally,simulation is done in this paper,whose results show that the application of the emulated-current control technique to the phase-shift full-bridge converter is feasible.