DCM模式Boost开关变换器的非线性全阶建模和仿真  

Full-Order Nonlinear Models and Simulation of Boost Converters Operating in DCM

作　　者：程心[1] 解光军[1] 

机构地区：[1]合肥工业大学应用物理系,合肥230009

出　　处：《电子器件》2009年第2期460-462,466,共4页Chinese Journal of Electron Devices

基　　金：安徽省优秀青年科技基金资助(06042086)

摘　　要：提出了一种工作在断续电感电流模式下的DC-DC Boost(升压)变换器模型。在经典状态空间平均法基础上运用占空比限制和系数修正矩阵加以改进,并考虑寄生参数的影响,推导出状态方程,建立其非线性全阶模型,对瞬态响应和开环传递函数进行仿真,结果较已报道文献,直观、物理意义明确、精度更高。Various aspects of averaged modelling of DC-DC Boost converters operating in the discontinuous conduction mode （DCM） are studied. This paper presents a new approach for generating the state-space average-value model. In the proposed methodology, a duty ratio constraint and a modification matrix which lead to a full-order nonlinear model are extracted. The parasitic effects of circuit elements are really included based on state-space averaging. The transient response and open loop transfer functions of the proposed model are simulated in Simulink. Numerical analyses and experimental measurements confirm that the new models are more accurate than previous models.

关 键 词：断续电流模式 BOOST变换器 状态空间平均法 占空比限制 

分 类 号：TM452[电气工程—电器]