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This paper proposes a novel AC/DC/AC voltage source converter without or with a quite small dc-link capacitor. Because an advanced modulation wave reconstruction-SPWM (AMWR-SPWM) technique is adopted which can greatly eliminate the harmonics of output voltage, the DC filter capacitor is greatly decreased or even removed. In addition, the size of the input ac filter and the output ac filter is reduced...
Harmonic Cancellation Technique (HCT) is a modulation technique which has been developed to reduce the output voltage THD of three phase voltage source inverters (VSI) when they are used to feed simultaneously both linear and non-liner loads. The HCT is based on the proper pre-distortion of the inverter output voltage in order to cancel out the low frequency harmonic content due to the non linear...
Due to the interaction between the rectified voltage appearing on the dc side of the grid-connected current source inverter (CSI) and the dc inductor, the input current on the dc side inherently consists of the second-order harmonic of the grid frequency. This harmonic component will be modulated by the pulsewidth modulation (PWM) signal that results in generating low-order harmonics at the output...
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