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Investigational Validation of PV Based DCD-MLI Using Simplified SVM Algorithm Utilizing FPGA Tied with Independent Sources

机译:利用简化的SVM算法和基于独立来源的FPGA的基于PV的DCD-MLI的研究验证

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This paper presents the independent source tied photovoltaic (PV) based three-phase three-level diode-clamped-multilevel inverter (DCD-MLI) utilizing field programmable gate array (FPGA) controller. The maximum power point (MPP) is tracked by using fuzzy logic algorithm. Employed for gating signal generation, the space vector modulation (SVM) strategy eradicates the complexity in determining the reference vector location, the ON-time calculations and switching state selection. A digital proportional integral (PI) control algorithm is implemented on a FPGA to keep the current injected into the independent source (grid) sinusoidal and to achieve high dynamic performance with low total harmonic distortion (THD) of output voltage and output current which are 0.97% and 1.26%. With the proposed configuration, the adjustments of modulation index and phase angle are synthesized onto a FPGA by means of hardware description language (VHDL). The efficacy of the scheme is verified through simulation study. To confirm the feasibility of the scheme, experimental studies are carried out on a scaled-down laboratory prototype.
机译:本文提出了一种采用现场可编程门阵列(FPGA)控制器的基于独立电源束缚光伏(PV)的三相三电平二极管钳位多电平逆变器(DCD-MLI)。通过使用模糊逻辑算法跟踪最大功率点(MPP)。用于门控信号生成的空间矢量调制(SVM)策略消除了确定参考矢量位置,导通时间计算和切换状态选择的复杂性。在FPGA上实现了数字比例积分(PI)控制算法,以保持注入到独立源(网格)正弦波中的电流,并实现高动态性能,而输出电压和输出电流的总谐波失真(THD)较低,仅为0.97 %和1.26%。利用提出的配置,通过硬件描述语言(VHDL)将调制指数和相位角的调整合成到FPGA上。通过仿真研究验证了该方案的有效性。为了确认该方案的可行性,在缩小的实验室原型上进行了实验研究。

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