DC excitation control of a wind induction synchronous generator using a micro-controller

Solar Pv Fed Stand-Alone Excitation System of a Synchronous Machine for Reactive Power Generation

“…Underground and overhead transmission lines etc. The technology used with the SM is Wind power excited synchronous generator system [1][2][3]. Fossil fuel or Hydro turbine coupled synchronous generator system are such that the RPC is done by energizing the SM from the line itself [2].…”

“…Generally other synchronous motors the SC doesn't have the shaft open because their main function is to supply reactive power hence, they run at no load at the synchronous speed and are not coupled to any mechanical load. There are several techniques for control of excitation [7] of SC like using fuzzy logic [6] or by micro controller [3] or by DC/DC converter [5], controlled bridge circuit etc. [8].…”

A Novel Rectification Method for a High Level ac Voltage Converting to a Low Level dc Voltage: Example of Scooters Idling Stop System

“…The magnetic field of rotor will be changed when the excitation current of the rotor coil was adjusted directly. Thus the threephase voltage amplitude of stator can be maintained at a fixed value in the variable speed [2]. The dc link output voltage is behaved as an input voltage when the dc link output voltage is higher than the output voltage of the synchronous generator.…”