Frede Blaabjerg

TL;DR: A new grid synchronization method for three-phase three-wire networks, namely dual second-order generalized integrator (SOGI) frequency-locked loop, based on two adaptive filters, is presented, able to perform an excellent estimation of the instantaneous symmetrical components of the grid voltage under unbalanced and distorted grid conditions.

TL;DR: In this article, an impedance-based analytical approach is employed and expanded to a meshed and balanced three-phase network which is dominated by multiple current and voltage-controlled inverters with LCL-and LC-filters.

TL;DR: In this article, a new direct torque and flux control based on space-vector modulation (DTC-SVM) for induction motor sensorless drives is introduced, which is able to reduce the acoustical noise, the torque, flux, current, and speed pulsations during steady state.

TL;DR: This review paper is the first of its kind with the aim of providing a “one-stop” information source and a selection guide on impedance-source networks for power conversion for researchers, designers, and application engineers.

TL;DR: In this paper, a unified impedance model of grid-connected voltage-source converters for analyzing dynamic influences of the phase-locked loop (PLL) and current control is proposed, which not only predicts the stability impact of the PLL, but also reveals its frequency coupling effect.