In the application of rail transit vehicles, when using typical wireless power transfer (WPT) systems with series–series (SS) compensation supply power for supercapacitors, the output current is in an approximately inverse relationship with the duty cycle in a wide range. This renders the typical buck circuit control inappropriate. In order to help resolve the above issues, this paper designs i...

While the unified power quality conditioner based on modular multilevel converter (MMC-UPQC) can be used for recovering of voltage and current in high grids, it is difficult to manage when grid imbalance large. In this paper, a passivity-based control (PBC) combined with sliding mode (SMC) proposed MMC-UPQC improve under unbalance systems. First, according structure MMC-UPQC, equivalent mathema...

A novel driver with discharge current compensation is proposed to drive an ac plasma display panel (PDP). This proposed circuit uses resonance between the inductor and the ac PDP to avoid abrupt charging/discharging. The four switches of the full bridge are all operated with zero-voltage-switching turn-on. In addition, an 8-in ac PDP equipped with the proposed driving circuit, operating at 100 ...

Wind Farms (WF) employing squirrel cage induction generator (SCIG) is directly connected to the grid, it represent a large percentage of the wind energy conversion systems around the world. In facilities with moderated power generation, the WF are connected through Medium Voltage (MV) distribution headlines. A situation commonly found in such scheme is that the power generated is similar to the...