基于DSP的高精度电源控制系统设计

Design of High-precision Power Supply Control System Based on DSP

国际热核聚变实验堆(ITER)传感器稳态测试平台高精度电源是一种大容量单相逆变电源。为实现电源快速响应和高精度输出电流,提出了级联H桥逆变器方案,并针对该拓扑提出载波移相脉宽调制(CPS-PWM)策略。在分析多电平逆变器拓扑结构和控制策略的基础上,设计了基于复杂复杂可编程逻辑器件(CPLD)及数字信号处理器(DSP)的通用控制系统。仿真与实验结果验证了该设计方案的可行性和有效性。

As one of the core equipment of international thermonuclear experimental reactor（ITER） sensor steady-state test platform,high-precision power supply is a large capacity single-phase inverter.In order to realize the fast response of power supply and the high-precision of output current, a cascaded H-bridge inverter scheme is adopted and a carrier phase-shifted pulse width modulation （CPS-PWM） strategy is proposed for this topology.Based on the analysis of multi-level inverter topology and control strategy, a system based on complex programmable logic device （CPLD） digital signal processor（DSP） is designed,Simulation and experimental results verify the feasibility of the proposed scheme.