Analysis and design of PWM regulators for large-signal stability
Analysis and design of PWM regulators for large-signal stability
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DOI：
10.1109/iscas.2002.1010247
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发表时间：
2002-08
期刊：
影响因子：
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通讯作者：
Y. Berkovich;A. Ioinovici
中科院分区：
文献类型：
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作者：
Y. Berkovich;A. Ioinovici
按照统一的程序，对基本降压、升压和降压-升压变换器进行了面向大信号稳定性的设计。给出了描述这些变换器暂态的精确非线性方程。定义了每个转换器的正定Lyapunov函数。应用李雅普诺夫稳定性定理，导出了反馈电路参数的约束条件，以保证李雅普诺夫函数沿变换器微分方程的每一个导数都是负的。计算机模拟和实验室实验证实，尊重上述约束的设计即使在大信号扰动下也是稳定的。
Following a unitary procedure, a large-signal stability-oriented design is performed for basic buck, boost and buck-boost converters. Exact nonlinear equations describing the transient state of these converters are written. Positive-definite Lyapunov functions for each converter are defined. Applying the Lyapunov stability theorem, constraints on the parameters of the feedback circuit are derived for ensuring the negativity of each of derivatives of the Lyapunov functions along the converter's differential equations. Computer simulation and laboratory experiments confirmed that the designs that respected the above constraints were stable even for large-signal perturbations.