In this paper, a low-frequency squarewave inverter with a series-connected pulse width modulation (PWM) inverter is investigated for highpower applications. The series compensators produce only the desired harmonic voltages to make the net output voltage sinusoidal with small PWM switching harmonics only. An open-loop control strategy for the series compensator is proposed in this paper. This s...

In this paper, a cascaded current–voltage control strategy is proposed for inverters to simultaneously improve the power quality of the inverter local load voltage and the current exchanged with the grid. It also enables seamless transfer of the operation mode from standalone to grid-connected or vice versa. The control scheme includes an inner voltage loop and an outer current loop, with both ...

With increased penetration of renewable power and the nonlinear loads in distributed generation (DG) systems, quality concerns are exhibited active distribution networks, especially challenges associated with current voltage harmonics system. Various conventional harmonic compensation techniques developed for <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/...

Due to the increasing penetration of distributed energy resources (DERs) required for sustainable distribution system, new voltage control strategy is needed by utilities. Traditional can not support number DERs in a coordinated and scalable manner meet operational regulation requirement. Supported power electronics converter, storage system provide fast, smooth, flexible services. In this pape...

Abstract: Fast control DC-link voltage is the key to enhance Low-Voltage Ride-Through (LVRT) for the Permanent Magnet Synchronous Generator (PMSG). When grid voltage dips deeply, by the constraint of the capacity of the grid-side converter and reactive power support by the grid-code required, the active power capacity of the grid-side converter will be reduced. Therefore, it cannot stabilize th...