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A hybrid Lyapunov control for a flying capacitor multicellular converter is presented. This control law is based on the Port-Hamiltonian (PH) formalism of power converters and allows to enhance load current quality and reduce switching losses. The proposed control is applied to a three-cell multicellular converter. A procedure for selecting the best weighting parameters in the control law according...
Nowadays, active-front-end rectifiers are increasingly used as grid connected devices. Their efficiency and performances have become relevant for reducing the overall grid losses. This paper thus introduces a predictive hybrid pulse-width-modulation (PH-PWM) technique, adaptable to any space-vector PWM (SVPWM) controller. As opposed to hybrid PWM techniques based on sector partitioning, the PH-PWM...
In order to actively control the power flow in a Dual Active Bridge (DAB) converter, different modulation strategies such as Single Phase Shift (SPS), Triangular Modulation (TRM), Extended Single Phase Shift (ESPS) have been proposed. Each modulation is more suitable for a given range of load power level and has difficulties in working with a wide range of load power level. As these strategies are...
Hybrid Pulse Width Modulation (PWM) techniques select the appropriate PWM sequence that induces either less current distortion or less switching losses or both. The sequence selection is usually based on an off-line sector partitioning. This simple solution freezes unfortunately the design and prevents any on-line evolution. In this article the improved hybrid PWM technique based on Finite Control...
The Finite Control Set Model Predictive Control (FCS-MPC) technique is worldwide recognized due to its adaptability and capacity to take into account the discrete characteristics of control systems. However, it shows some limitations when directly used to control power converters, as its variable frequency spectrum, its limited current quality and its low-voltage precision for a given sample time...
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