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This paper proposes a repetitive controller with phase-lead compensation for an unfolding-type Cuk continuous conduction mode (CCM) inverter operating in the CCM. The Cuk CCM inverter features medium power capacity, step up/down ability, and low input/output current ripples, so it is well suited to distributed power generation systems. To achieve accurate tracking of the reference output current,...
This paper proposes a repetitive controller to be used for capacitor-less current-fed dual-half-bridge (CF-DHB) converters under the grid-connected environment. When the dc-link capacitor is very small, the dc-link current fluctuation can distort the input current severely. Compared with the previous controllers introduced to reduce the input current ripples, the proposed repetitive controller can...
This paper proposes a PWM based integral sliding mode controller (ISMC) for the single-stage Cuk inverter. The fourth-order model of the Cuk inverter is derived first and it is simplified to use ISMC. Based on the simplified system model, the ISMC that consists of the equivalent control part plus the switching control part is designed and applied to the single-stage Cuk inverter. Comparing to conventional...
A integral sliding mode controller (ISMC) for a fixed-frequency PWM is proposed for the Cuk converter. The fourth-order model of the Cuk converter is derived first and it is simplified to use ISMC. Based on the simplified system model, the ISMC that consists of the equivalent control part plus the switching control part is designed and applied to the Cuk converter in the presence of uncertain variations...
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