| 光伏发电系统前级宽输入DC/DC Boost变换器 |
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| 引用本文： | 冷明全,程为彬,刘峰,郭颖娜.光伏发电系统前级宽输入DC/DC Boost变换器[J].电气传动,2020(3):37-39. |
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| 作者姓名： | 冷明全 程为彬 刘峰 郭颖娜 |
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| 作者单位： | 西安石油大学陕西省油气井测控技术重点实验室;西安石油大学光电油气测井与检测教育部重点实验室 |
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| 基金项目： | 陕西省工业攻关计划(2016GY-059);陕西省教育厅重点项目(15JS083)。 |
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| 摘 要： | 峰值电流模式DC/DC Boost变换器输入电压范围较宽,适用于两级式光伏发电系统的前级。DC/DC Boost变换器的输入电压较低时,一般采用固定斜坡补偿来保证其稳定运行,低输入电压范围宽时,往往需要过补偿,无法达到设计功率。提出一种动态斜坡补偿的方法,使变换器在较宽输入电压下都能稳定工作且具有较高效率。40 W样机测试结果显示:输入电压在16~24 V的范围内,变换器均能稳定工作。
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| 关 键 词： | 光伏发电系统 宽输入电压 DC/DC变换器 动态补偿 |
DC/DC Boost Converter with Wide Input Voltage in Photovoltaic Power Generation System as Pre-stage |
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| LENG Mingquan,CHENG Weibin,LIU Feng,GUO Yingna.DC/DC Boost Converter with Wide Input Voltage in Photovoltaic Power Generation System as Pre-stage[J].Electric Drive,2020(3):37-39. |
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| Authors: | LENG Mingquan CHENG Weibin LIU Feng GUO Yingna |
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| Affiliation: | (Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells,Xi’an Shiyou University,Xi’an 710065,Shaanxi,China;MOE Key Laboratoryof Photoelectricity Gas&Oil Logging and Detecting,Xi’an Shiyou University,Xi’an 710065,Shaanxi,China) |
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| Abstract: | The DC/DC boost converter operating in peak current mode has a wide input voltage range,which is suitable for the pre-stage of a two-stage photovoltaic power generation system. The constant slope compensation is usually used to ensure the DC/DC Boost converter stable operation when the input voltage is low. Over compensation is often required when the range of low input voltage is wide,but it’s unable to reach the design power. A method of dynamic slope compensation was proposed,which can make the converter work steadily and have high efficiency under the wide input voltage. The testing results of the 40 W prototype show that the converter works steadily in the input range voltage from 16 V to 24 V. |
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| Keywords: | photovoltaic generation system wide input voltage DC/DC convertor dynamic compensation |
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