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Combined an output voltage differential inner loop, an improved direct repetitive control strategy for CVCF inverters is proposed. The output voltage differential feedback effectively eliminates the inherent high-resonant peak of the open-loop inverter. Since the stability and the transient characteristics of the inverter plant are greatly improved, the repetitive controller is easier to be designed...
This paper presents a PID controller for dc-link boost voltage in Z-source inverter. With this technique a constant capacitor voltage can be achieved with an excellent transient performance which enhances the rejection of disturbance, including the input voltage ripple and load current variation, and have good ride-through for voltage-sags. The shoot-through duty cycle modulation strategy for control...
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