电工技术学报2012，Vol.27Issue(6)：90-95,6.
考虑指令电流的变环宽准恒频电流滞环控制方法
A Variable Hysteresis-Band and Quasi-Constant Current Controller with Reference Current
摘要
Abstract
Based on the half-bridge voltage-fed PWM converter, the relationship among tracking current, neutral-point voltage of DC capacitor and source voltage are analyzed. A transformation approach of neutral-point voltage of DC capacitor, source voltage and reference current is proposed. A reference current can be transformed into an additional component of source voltage, and a new voltage which is the sum of the additional voltage and original source voltage is obtained. We can get an improved variable hysteresis-band and quasi-constant current-tracking method using the new voltage within PWM current control for voltage converter. Using the new method, the instability of switching frequency led by the changes of reference current can be overcome. The simulation result shows the correctness of the proposed method.关键词
电压型PWM变换器/指令电流/电流控制/开关频率/准恒频滞环Key words
Voltage-fed PWM converter/reference current/current control/switching frequency/quasi-constant hysteretic分类
信息技术与安全科学引用本文复制引用
徐永海,刘晓博..考虑指令电流的变环宽准恒频电流滞环控制方法[J].电工技术学报,2012,27(6):90-95,6.基金项目
“十二五”国家科技支撑计划项目 （）
“十一五”国家科技支撑计划重大项目 （）
