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IDB CONVERTOR - AN INTERNATIONAL MAXIMUM POWER EXTRACTOR FOR PV-SUPPLIED DC MOTOR SYSTEM

机译:IDB转换器-光伏电源直流电动机系统的国际最大功率提取器

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The Photovoltaic (PV) generator exhibits a non-linear v-i characteristics and its maximum power point varies with insolation. For optimum matching of PV generator and motor load, an intermediate Interleaved Dual Boost converter is employed. Its effectiveness as an intermediate maximum power extractor for PV-supplied and separately excited DC motor is studied through simulation. Extensive studies are made by formulating the mathematical models for PV source, Boost/Interleaved Dual Boost converter, DC motor and load. For determination of maximum power points at different solar insolations, a closed form solution technique is employed, which avoids tedious and time-consuming iterative methods. The Boost/IDB converter duty ratio variation with insolation is determined and steady-state performance of the motor coupled to centrifugal pump load is analyzed for maximum power operation. From the simulation studies it is found that the motor performance is improved with IDB converter compared to conventional boost converter. Furthermore, the use of IDB converter reduces the ripple content both in the source and load waveforms, thus resulting in reduced filtering requirements and improved PV array performance..
机译:光伏(PV)发电机具有非线性v-i特性,其最大功率点会随日照而变化。为了使光伏发电机和电动机负载达到最佳匹配,采用了中间交错双升压转换器。通过仿真研究了其作为光伏供电和单独励磁直流电动机的中间最大功率提取器的有效性。通过建立光伏电源,升压/交错双升压转换器,直流电动机和负载的数学模型,进行了广泛的研究。为了确定不同日照下的最大功率点,采用了封闭形式的求解技术,该技术避免了繁琐且耗时的迭代方法。确定Boost / IDB转换器的占空比随日照的变化,并分析与离心泵负载耦合的电动机的稳态性能,以实现最大功率运行。通过仿真研究发现,与传统的升压转换器相比,使用IDB转换器可以改善电机性能。此外,使用IDB转换器可减少源波形和负载波形中的纹波含量,从而降低了滤波要求并提高了PV阵列性能。

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