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FPGA based variable frequency AC to AC power conversion

机译：基于FPGA的交流到交流变频电源

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摘要

AC/AC variable frequency power conversion system is proposed which makes use of a cycloconverter in newer form, ac-ac matrix converter. An attempt has been made to operate this matrix converter both in conventional low frequency ac-ac converter, cycloconverter and new high frequency ac-ac converter, cycloinverter. The ability to directly affect the frequency conversion of power without any intermediate stage involving DC power is a huge advantage of the system. The undesirable harmonic components in the output of the matrix converter have been minimized using an advanced modulation technique called as trapezoidal modulation technique. The technique offers several advantages compared to other modulation techniques in terms of easy and fast real-time waveform generation with higher fundamental output voltage. The converter is simulated using well known software package MATLAB. Simulations results are presented for both cycloconverter as well as for cycloinverter. It has been found that for cycloinverter operation the total harmonic distortion (THD) is more as compared to cycloconverter mode of operation. The simulated results are also validated with experimental results by implementing the trigger controller circuit to generate trapezoidal modulated trigger signal for matrix converter on field programmable gate array (FPGA). Peripheral input-output and FPGA interfacing has been developed through Xilinx 9.2i using very high speed integrated circuit hardware description language (VHDL). The circuit has been tested qualitatively by observing various waveforms on digital storage oscilloscope (DSO). The operation of proposed system has been found satisfactory.
机译：提出了一种AC / AC变频功率转换系统，该系统利用了一种新型的循环转换器AC-AC矩阵转换器。已经尝试在传统的低频AC-AC转换器（环型转换器）和新型高频AC-AC转换器（环型转换器）中操作该矩阵转换器。该系统的巨大优势是能够直接影响电源的频率转换而无需任何涉及直流电源的中间级。使用称为梯形调制技术的高级调制技术，可以将矩阵转换器输出中的不良谐波分量降至最低。与其他调制技术相比，该技术在具有较高基本输出电压的便捷，快速的实时波形生成方面具有多个优势。使用众所周知的软件包MATLAB对转换器进行仿真。给出了针对环变频器和环变频器的仿真结果。已经发现，对于循环逆变器操作，总谐波失真（THD）与循环变换器操作模式相比更大。通过实现触发控制器电路为现场可编程门阵列（FPGA）上的矩阵转换器生成梯形调制触发信号，还可以通过实验结果验证仿真结果。赛灵思9.2i使用超高速集成电路硬件描述语言（VHDL）开发了外围输入输出和FPGA接口。该电路已通过在数字存储示波器（DSO）上观察各种波形进行了定性测试。所提出的系统的运行被发现令人满意。

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