Closed-Loop Analysis and Cascade Control of a Nonminimum Phase Boost Converter

被引:124
作者
Chen, Zengshi [1 ]
Gao, Wenzhong [3 ]
Hu, Jiangang [2 ]
Ye, Xiao [4 ]
机构
[1] Tennessee Technol Univ, Mfg Res Ctr, Cookeville, TN 38501 USA
[2] Rockwell Automat, Milwaukee, WI 53092 USA
[3] Univ Denver, Dept Elect & Comp Engn, Denver, CO USA
[4] Hefei Univ Technol, Sch Elect Machinery & Elect Apparat, Hefei 230009, Peoples R China
基金
美国国家科学基金会;
关键词
Boost converter; closed-loop; error dynamics; nonminimum phase; proportional-integral (PI); sliding-mode control (SMC); transient; SLIDING MODE CONTROL; DC-DC CONVERTERS; POWER CONVERTERS; UNIFIED APPROACH; DESIGN; HYSTERESIS;
D O I
10.1109/TPEL.2010.2070808
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, a cascade controller is designed and analyzed for a boost converter. The fast inner current loop uses sliding-mode control. The slow outer voltage loop uses the proportional-integral (PI) control. Stability analysis and selection of PI gains are based on the nonlinear closed-loop error dynamics. It is proven that the closed-loop system has a nonminimum phase behavior. The voltage transients and reference voltage are predictable. The current ripple and system sensitivity are studied. The controller is validated by a simulation circuit with nonideal circuit parameters, different circuit parameters, and various maximum switching frequencies. The simulation results show that the reference output voltage is well tracked under parametric changes, system uncertainties, or external disturbances with fast dynamic transients, confirming the validity of the proposed controller.
引用
收藏
页码:1237 / 1252
页数:16
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