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3D-SVPWM algorithm is used for synthesizing the desired bridge output voltage and generating compensation currents to cancel the harmonics. In this paper, depict the detail step for calculate the command vector and duty cycle of each leg in three level 3-phase 4-wire shunt active power filter system. After induction, proposed a simplified 3D-SVPWM algorithm. Compare to the traditional 3D-SVPWM algorithm,...
In this paper, four three-phase/four-wire dc/ac converter topologies assembled with three-level and two-level legs are proposed. Several relevant characteristics of the converters are addressed, such as voltage capability, harmonic distortion, and power losses. Experimental and simulated results are presented.
In this paper, a simplified 3D-SVPWM algorithm is proposed for the three-phase four-wire shunt active power filter system. 3D-SVPWM algorithm is used for synthesizing the desired bridge output voltage and generating compensation currents to cancel the harmonics. The relationship between command vector and duty cycle of each leg is proved to be coincident with the result of applying period average...
A method of high performance output voltage control of four-wire inverter based three-phase UPS is proposed. Stationary frame resonant filter bank based output voltage control loop, which is complemented by capacitor current feedback based active damping loop, is employed. Utilizing the zero-state partitioning variable, a generalized form of scalar PWM for the four-wire inverter is developed and the...
An all-scalar-control and pulsewidth-modulation (PWM) approach for the four-leg-inverter (FLI)-based three-phase transformerless four-wire power supply (PS) is proposed. The output voltage of each phase is controlled independently, and its controller is formed by a stationary-frame resonant-filter bank accompanied with proportional-control and output-capacitor current-based active-damping loops. The...
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