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首页> 外文期刊>Journal of circuits, systems and computers >A Different Approach to Design Non-Isolated DC-DC Converters for Maximum Power Point Tracking in Solar Photovoltaic Systems
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A Different Approach to Design Non-Isolated DC-DC Converters for Maximum Power Point Tracking in Solar Photovoltaic Systems

机译:设计用于太阳能光伏系统最大功率点跟踪的非隔离式DC-DC转换器的不同方法

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摘要

Maximum power point tracking (MPPT) is an essential part of solar photovoltaic (PV) system to draw maximum available power which is generated by the solar PV. The concept of MPPT is based on maximum power transfer theorem. When the impedance of source is equal to the load impedance then only, source or solar PV delivers maximum power to the load. Impedance matching is done through DC-DC converter, whereas the duty cycle of the converter is decided by the MPPT algorithm. Nonetheless, DC-DC converter design is a key aspect in any tracking scheme, bulk of publications on MPPT are available in literature but very less information can be obtained on DC-DC converter design. Thus, the main focus of this paper is to provide an easy converter design procedure for MPPT in solar PV applications on the basis of solar panels impedance. In this paper, a step by step design of buck converter, boost converter and buck-boost converter particularly for MPPT applications is presented and results are verified through OPAL-RT OP4500 Real Time Simulator.
机译:最大功率点跟踪(MPPT)是太阳能光伏(PV)系统的重要组成部分,可吸收太阳能PV产生的最大可用功率。 MPPT的概念基于最大功率传递定理。当电源的阻抗等于负载阻抗时,则只有电源或太阳能PV向负载提供最大功率。阻抗匹配通过DC-DC转换器完成,而转换器的占空比由MPPT算法确定。但是,DC-DC转换器设计是任何跟踪方案中的关键方面,有关MPPT的大量出版物可从文献中获得,但有关DC-DC转换器设计的信息很少。因此,本文的主要重点是基于太阳能电池板的阻抗,为太阳能光伏应用中的MPPT提供一种简单的转换器设计程序。本文介绍了针对MPPT应用的降压转换器,升压转换器和降压-升压转换器的分步设计,并通过OPAL-RT OP4500实时仿真器验证了结果。

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