| 基于开关等效模型的全桥ZVS PWM DC—DC变换器的小信号建模 |
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| 引用本文： | 孙铁成,汤平华,张学广.基于开关等效模型的全桥ZVS PWM DC—DC变换器的小信号建模[J].电源世界,2007(10):29-31,23. |
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| 作者姓名： | 孙铁成 汤平华 张学广 |
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| 作者单位： | 哈尔滨工业大学电气工程及自动化学院,哈尔滨150001 |
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| 摘 要： | 结合全桥ZVS DC—DC变换器的软开关工作特点，利用PWM开关等效模型，推导出了全桥ZVS DC-DC变换器的小信号模型。应用这种小信号模型，依据变换器动态性能指标，可以正确设计全桥变换器各元件的参数，使这种软开关变换器的性能得到进一步提高。通过对小信号传递函数的幅一频及相一频特性的分析，证明了这种模型具有物理意义清晰、计算简单等优点。
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| 关 键 词： | 开关等效模型 ZVS 变换器 小信号建模 |
| 文章编号： | 1561-0349（2007）10-0029-03 |
| 修稿时间： | 2006-12-182007-07-29 |
Small-signal Modeling of Full-bridge ZVS PWM DC-DC Converter Based on Equivalent Switching Circuit Model |
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| Sun Tiecheng, Tang Pinghua, Zhang Xueguang.Small-signal Modeling of Full-bridge ZVS PWM DC-DC Converter Based on Equivalent Switching Circuit Model[J].the world of power supply,2007(10):29-31,23. |
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| Authors: | Sun Tiecheng Tang Pinghua Zhang Xueguang |
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| Affiliation: | Harbin Instituteof of Technology 150001 |
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| Abstract: | According to the operating characteristic of the ZVS full-bridge PWM DC-DC converter, this paper deduced the small-slgnal model of the ZVS full-bridge PWM DC-DC converter based on the equivalent switching circuit model. By using this model, the component parameters of the converter can be designed correctly according to the request of the dynamic response, and the performance of this kind of soft-switchlng converter can be improved further. The magnitude-frequency and phase-frequency characteristics of small-signal transfer function have been analyzed, and from the result of simulation, we know that theproposed modeling has many advantages such as clear meaning and simple calculation. |
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| Keywords: | equivalent switching model- ZVS converter small-signal modeling |
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