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Power-based control has proven to be an effective and robust way for having a centralized control scheme in a microgrid. The scheme has a minimal communication requirement, which enables the distributed energy resources (DERs) in the system to share the load proportionally according to their capability. This paper proposes a modification of the conventional power-based control, which is applicable to the synchronous reference frame. The proposed scheme enables unbalanced load compensation, while reducing the necessary communication between the master controller and the local inverter controllers. Finally, the scheme also proposes weighting factors for reducing the voltage unbalance factor of the grid. The proposed scheme is valid for three-phase three-wire systems. The effectiveness of the scheme is shown through numerical simulations. © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

This paper investigates the power cycling methodology for reliability testing of SiC metal-oxide-semiconductor field-effect transistors (MOSFETs). Dedicated test benches were designed and built to study this issue. The results indicate that power cycling of SiC MOSFETs is affected by threshold voltage instability. A proposal for reducing the influence of the latter is also given. This is done by adding an additional gate pulse to the device under test, in order to achieve an average bias of zero during one cycle of the power cycling experiment. © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.