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Load Angle Control of a Synchronous Generator

100%

Sumina D. , Bulić N. , Vražić M.

Przegląd Elektrotechniczny

2012

tom R. 88, nr 3a

225-231

This paper presents a new control structure for the synchronous generator excitation control in its capacitive operating area. The proposed method enables the generator to operate stably close to the stability limit, extending its capacitive operating area. As to generator stability, the main variable is the generator load angle, hence the proposed method suggests using a load angle controller along with a voltage controller. The proposed algorithm has been implemented in a digital system based on a signal processor and has been experimentally verified on a lab model.

W artykule zaprezentowano nową strukturę sterowania generatorem synchronicznym obciążonym pojemnościowo. Dla zapewnienia stabilności zastosowano sterowanie z uwzględnieniem kąta obciążenia.

Non-linear excitation and governor control: a comparison of control schemes.

67%

Iyer A.

Systems Science

2000

tom Vol. 26, nr 2

55-68

Modem microprocessor capabilities permit the control designer to consider using relatively complicated nonlinear control algorithms, which would have been considered impractical in the past. In the paper inverse control and variable structure control are applied to the design of excitation and governor controllers using state variable feedback. The paper presents the results of a study of the two non-linear techniques for the design of excitation and governor controllers for a multi-machine power system. Control laws for rotor angle and field flux are derived. The closed loop system is shown to be asymptotically stable. The system can be transferred to a new operating condition corresponding to any desired terminal voltage V/sub t/ and tie-line power P/sub tie/.