Time-varying effects and averaging issues in models for current-mode control
This paper investigates issues in modeling of current-mode control in converters. The effects of the current-sampling intrinsic to current-mode control are analyzed, and inadequately recognized limitations of linear time-invariant (LTI) models at high frequencies (where the system behavior is time-v...
| Main Authors: | , |
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| Outros autores: | |
| Formato: | Artigo |
| Idioma: | en_US |
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Institute of Electrical and Electronics Engineers (IEEE)
2014
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| Acceso en liña: | http://hdl.handle.net/1721.1/86987 https://orcid.org/0000-0002-5930-7694 https://orcid.org/0000-0002-0746-6191 |
| Summary: | This paper investigates issues in modeling of current-mode control in converters. The effects of the current-sampling intrinsic to current-mode control are analyzed, and inadequately recognized limitations of linear time-invariant (LTI) models at high frequencies (where the system behavior is time-varying) are exposed. The paper also examines the geometric methods used to derive duty-ratio constraints in averaged models of current-mode control and points out the sources of discrepancies among various models. The conclusions are supported by simulation and experimental results. |
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