| 基于复合控制的LLC谐振变换器轻载纹波优化 |
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| 引用本文： | 陈天锦,曹亚,曹智慧,刘向立,刘天强,边慧萍,蔡思淇. 基于复合控制的LLC谐振变换器轻载纹波优化[J]. 电气传动, 2021, 51(8): 34-39. DOI: 10.19457/j.1001-2095.dqcd22371 |
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| 作者姓名： | 陈天锦 曹亚 曹智慧 刘向立 刘天强 边慧萍 蔡思淇 |
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| 作者单位： | 许继电源有限公司,河南 许昌 461000 |
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| 摘 要： | 为提高LLC谐振变换器输出电压稳定性,改善轻载工况下输出电压纹波,提出了一种复合控制策略以实现全桥LLC变换器全负载范围的稳定电压输出.此种控制策略混合了有限双极性PWM控制与PFM控制,轻载时采用有限双极性PWM控制模式,重载时采用PFM控制模式,以此实现零电压开关,有效提高了LLC谐振变换器的效率,使得输出纹波大大...
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| 关 键 词： | 有限双极性 LLC谐振变换器 纹波 零电流零电压开关 |
LLC Resonant Converter Light Ripple Optimization Based on Composite Control |
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| CHEN Tianjin,CAO Ya,CAO Zhihui,LIU Xiangli,LIU Tianqiang,BIAN Huiping,CAI Siqi. LLC Resonant Converter Light Ripple Optimization Based on Composite Control[J]. Electric Drive, 2021, 51(8): 34-39. DOI: 10.19457/j.1001-2095.dqcd22371 |
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| Authors: | CHEN Tianjin CAO Ya CAO Zhihui LIU Xiangli LIU Tianqiang BIAN Huiping CAI Siqi |
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| Affiliation: | (Xuji Power Co.,Ltd.,Xuchang 461000,Henan,China) |
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| Abstract: | In order to improve the output voltage stability of LLC resonant converter and improve the output voltage ripple under light load condition,a compound control strategy was proposed to achieve stable voltage output in full load range of full bridge LLC converter.This control strategy was a mixture of finite bipolar PWM control and PFM control.Under light load,the limited bipolar PWM control mode was adopted,while under heavy load,PFM control mode was adopted to realize zero voltage switch,which effectively improved the efficiency of LLC resonant converter and greatly reduced the output ripple.Finally,the correctness of the analysis and the effectiveness of the proposed control strategy were verified by experiments. |
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| Keywords: | finite bipolarity LLC resonant converter ripple zero current zero voltage switch |
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