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首页> 外文期刊>American journal of applied sciences >HARMONICS REDUCTION IN FRONT END RECTIFER OF UNINTERRUPTIBLE POWER SUPPLIES WITH ACTIVE CURRENT INJECTION
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HARMONICS REDUCTION IN FRONT END RECTIFER OF UNINTERRUPTIBLE POWER SUPPLIES WITH ACTIVE CURRENT INJECTION

机译：有源注入不间断电源前部整流器的谐波减小

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摘要

Harmonics are the by-products of modern electronics devices so it is necessary to mitigate the harmonics and offer techniques to mitigation of harmonics. It is greatly hampered by a three phase rectifier used as a front-end ac-to-dc converter in many systems. High power factor is achieved by injecting high-frequency currents into the three-phase rectifier. This study presents the high power factor operation of the converter with reduced total harmonic distortion up to 47.06%. The power quality up gradation is due to high-frequency current injection, at the input of the front-end rectifier. Sinusoidal PWM technique is used for controlling the output voltage. DSP is used for generating the desired gate pulses. The converter has high efficiency, low EMI emissions, high power packing density and suitable for UPS system.
机译：谐波是现代电子设备的副产品，因此有必要减轻谐波并提供减轻谐波的技术。三相整流器在许多系统中用作前端AC-DC转换器，大大阻碍了它的工作。通过向三相整流器注入高频电流来实现高功率因数。这项研究提出了转换器的高功率因数操作，总谐波失真降低了高达47.06％。电能质量的提升归因于前端整流器输入端的高频电流注入。正弦PWM技术用于控制输出电压。 DSP用于生成所需的门脉冲。该转换器具有高效率，低EMI辐射，高功率封装密度，适合于UPS系统。

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