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The inherent resonance of the grid-connected inverter with LCL-filter can lead to an instability of such a system. Normally, a damping resistor in series with the capacitor in the LCL-filter will be used to suppress the resonance, and the damping resistance is designed roughly based on the Routh-Hurwitz stability criterion. But, in practice, the resistance should be bigger than the designed value...
This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input ac...
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