摘要
提出了一种工作在断续电感电流(DCM)模式下的非理想DC-DC Boost(升压)变换器模型。在电路平均法基础上对占空比限制加以改进,并考虑寄生参数的影响,建立其小信号模型,推导出传递函数。在Matlab/Simulink环境中,对瞬态响应和开环传递函数进行仿真,结果与实际更加接近,精度更高。
A non-ideal model of DC-DC Boost converter operating in the discontinuous conduction mode is proposed.On the base of classic state-space averaging,this paper modifies the duty ratio constraint and considers parasitic effects of circuit elements,establishes the small-signal model and extracts transfer functions.The transient response and open loop transfer functions of the proposed model are simulated in Matlab/Simulink.The result of experiment confirms that the new model is more accurate and close to actuality.
出处
《电子器件》
CAS
2010年第4期489-492,共4页
Chinese Journal of Electron Devices
基金
合肥工业大学学生创新基金资助(XS09092)
