適于瞬態(tài)分析的等效小參量法及其在PWM開關(guān)變換器中的應(yīng)用
EQUIVALENT SMALL PARAMETER METHOD FOR TRANSIENT ANALYSIS AND ITS APPLICATION IN PWM SWITCHING CONVERTERS
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摘要: 等效小參量法是一種改進(jìn)的擾動技術(shù),適于求取強非線性系統(tǒng)的周期解.最近已成功地將它應(yīng)用于開關(guān)變換器的穩(wěn)態(tài)分析.本文根據(jù)該方法的基本思想和求解程序,提出適于瞬態(tài)分析的等效小參量法,并用它分析PWM開關(guān)變換器的瞬態(tài)過程.本文方法計算量小,精度較高.
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關(guān)鍵詞:
- 漸近方法; 瞬態(tài)分析; 開關(guān)變換器; 非線性系統(tǒng)
Abstract: An improved perturbation technique (equivalent small parameter method) proposed in a recent paper (Int. J. Electronics, 1989, 67(3): 403-414) has been successfully applied to steady-state analysis of DC-DC PWM switching converters. This paper extends the algorithm to transient analysis of a broader class of non-linear systems. As an example, the transient respoase of a PWM switching converter is analyzed to demonstrate its simplicity and accuracy. -
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