Optimal operation of the rotating transformer brushless excitation of synchronous machine

Exciterless Wound-Field Medium-Power Synchronous Machines: Their History and Future

“…An inductive WPT ES is, in essence, a rotating transformer, with reactive load compensation when operated at the resonant frequency. Non-compensated ESs have also been demonstrated such as a 50Hz slip ring replacement system in [37], a compact 20kHz design for traction machines in [38], and a similar 20kHz system proposed for a 75MW hydro-generator [39]. Compensated inductive WPT ESs include a 40kW traction machine, demonstrated in a series of papers [40]- [42], followed by a 60kW machine in [43].…”

Power Supply for Excitation Mechanism of Motor in Electrical Appliance

“…As the exciter turns with the generator, the exciter armature winding cuts the stator excitation attractive field and creates actuated electromotive drive [2]- [3]. This power energizes the generator rotor windings specifically through the rectifier which pivots with the rotor armature synchronously without gatherer ring or brush [4]. Be that as it may, the brushless dc engine will function as the sensor observes the rotor area precisely, the control framework is perplexing and its operational unwavering quality is exceedingly required.…”

Brushless Three-Phase Synchronous Generator Under Rotating Diode Failure Conditions

“…In [4], others authors have suggested to measure the brushless transfer characteristic, given by the ratio of the generator"s output voltage and the exciter field current. On the other hand, many diagnosis techniques based on machine"s models [5], [6], [7], [8] and control algorithms [9], [10] have been suggested. Recently, via voltage-behindreactance formulation of the stator and the field windings, the model proposed in [11] has proven its applicability in an excitation failure case study.…”