This paper introduced the basic theory of cut in and cut out electric power in the 600/125kW fix pitch HAWT and the basic process and application methods of wind switch.

Objective To evaluate the effects of pars plana vitrectomy with administration of triamcinolone acetonide for the treatment of retinal detachment associated with choriodal detachment.

Design on the grid-connected PV generator with multi-tracking system;

Disturbance rejection controller for photovoltaic three-phase grid-connected system;

Novel Vector Control Strategy with Active and Reactive Power Decoupling Control for Wind Power Grid-connected Inverter;

Cutting-in Control of the VSCF Wind-power Generator Based on Auto-disturbance Rejection Controller;

With combination of integral variable structure control(IVSC) and field-oriented vector control technique,a control strategy was presented for smooth no-load cutting-in of variable-speed constant-frequency double-fed wind-power generator.

This article introduces the work principle of diesel generator set connected in parallel to municipal electric power, and in detail discusses the parallel connection which is applied in the second-stage engineering of a certain power plant.

Auto Quasi Corresponding-period Equipment is designed to realize a generator’ rapid parallel connection to electrical network in a power plant.

The necessity of developing computerized automatic parallel connection device for power system is analyzed.