FPGA Realization of Trapezoidal PWM for Generalized Frequency Converter

被引：38

作者：

Agarwal, Anshul ^{[1
]}

Agarwal, Vineeta ^{[1
]}

机构：

[1] MNNIT, Fac Elect Engn, Allahabad 211004, Uttar Pradesh, India

来源：

IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS | 2012年 / 8卷 / 03期

关键词：

Field-programmable gate array (FPGA); frequency converter; total harmonic distortion (THD); trapezoidal pulse width modulation (TPWM); WAVE; EMULATION; DESIGN;

D O I：

10.1109/TII.2012.2193406

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Combining concept of cyclo-converter and cyclo-inverter, a generalized frequency converter has been developed where undesirable harmonic components are minimized using nonsinusoidal carrier-based PWM, which is a trapezoidal pulsewidth modulation technique. The study begins by establishing a model of frequency converter to obtain the firing sequence for cyclo-converter and cyclo-inverter mode of operation. The converter is simulated using the well-known software MATLAB and simulations results are presented for a single-phase ac supply. It has been found that, for cyclo-inverter operation, the minimum total harmonic distortion in the output voltage is found to be 4.8%, while during cyclo-converter operation it is only 2%. Simulation results are validated with the experimental results. A prototype of frequency converter is developed where a field-programmable gate array is used to generate the PWM trigger signal through Xilinx 9.2i. The results are also compared with other existing carrier-based modulation techniques.

引用

页码：501 / 510

页数：10

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