Model-Based Digital Generator Control Unit for a Variable Frequency Synchronous Generator With Brushless Exciter

Rosado, S.; Ma, Xikui; Francis, G.; Wang, Fei; Boroyevich, Dushan

doi:10.1109/tec.2006.888040

Cited by 36 publications

(24 citation statements)

References 15 publications

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“…It can be expressed by (10). By bringing (9) into (10), the minimum frequency of AC voltage outputted from the pilot exciter can be obtained by (11). …”

Section: B Operating Principle Of the Main Circuit Of Excitation Regmentioning

confidence: 99%

“…Detecting the pilot exciter frequency f fe and according to the required minimum pilot-exciter frequency f femin calculated by (11), the digital AVR control system will start excitation initiating if f fe >f femin . Using V/F limit, it is possible to limit the given value of DC voltage u dcref when the generator's speed is 0.9 times the rated speed.…”

Section: Design Of Digital Avr Control Systemmentioning

confidence: 99%

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Research on self-excited initiation of a Medium-voltage DC (MVDC) multiphase synchronous generator-rectifier system

Wang

Guo

et al. 2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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This paper has described the excitation system of a Medium-voltage DC (MVDC) multiphase synchronous generatorrectifier system and calculated the minimum frequency of the pilot-exciter needed for self-excited initiation. On this basis, a double closed-loop V/F control method is proposed according to the classical PI control algorithm for self-excited initiation. With the method, a prototype is constructed for test. The results show that both the self-excitation initiating and the speed-rising processes of the generator set have changed synchronously thus to reduce the time needed for MVDC multiphase synchronous generator-rectifier system to start and finish establishing the nominal DC voltage.

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“…It can be expressed by (10). By bringing (9) into (10), the minimum frequency of AC voltage outputted from the pilot exciter can be obtained by (11). …”

Section: B Operating Principle Of the Main Circuit Of Excitation Regmentioning

confidence: 99%

Section: Design Of Digital Avr Control Systemmentioning

confidence: 99%

Research on self-excited initiation of a Medium-voltage DC (MVDC) multiphase synchronous generator-rectifier system

Wang

Guo

et al. 2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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“…The conventional sequential controllers can be improved further by means of local stabilization feedback actions or the SG load compensation. In Li et al and Rosado et al, controlling structures are proposed, on the basis of the sequential control extended by the load compensation feedforward action, proportional to the derivative of the SG stator current I d component calculated in the frame synchronous with the SG rotor. A shortcoming of the proposed method is that it requires accurate SG rotor angle value to calculate the SG stator current d component.…”

Section: Introductionmentioning

confidence: 99%

Robust synchronous generator excitation based on novel feedforward control

Stojić

Tarczewski

Joksimović

et al. 2017

Int Trans Electr Energ Syst

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Summary In this paper, a synchronous generator excitation controller based on a novel feedforward control action is proposed. The main purpose of the new feedforward action is to enable a more robust excitation of the synchronous generator operating in varying operating conditions when connected to a power grid, for any superimposed stator voltage controller. Namely, the dynamic performance of the proposed controller is compared with a conventional proportional‐integral (PI) controller, and with the PI controller combined with a feedforward action based on the direct component of the stator current. It is analytically shown that the novel controller improves the robustness when compared to 2 aforementioned solutions. Also, by simulation and experimental tests, it is shown that for the loaded synchronous generator, the novel controller, which is designed to have a similar response speed in open circuit as conventional controllers, exhibits up to 2 times faster dynamic performance.

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“…They are highly nonlinear, complex electromechanical devices, whose dynamic behavior directly impacts the performance and reliability of the power system network [2], [4], [12], [14]. To analyze the dynamic behavior of the SG, an effective and accurate simulation model is desired.…”

Section: Introductionmentioning

confidence: 99%

Synchronous generator model taking into account the non-uniform saturation of the pole shoes

Kutt

Michna

Kostro

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

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Φ Abstract -For the evaluation of modern electric power systems with regard to their behavior, weight, and reliability a novel modeling and simulation tools have been developed. The paper presents circuit model of synchronous generator taking into account both the non-sinusoidal distribution of the stator and rotor winding, and non-uniform saturation of the pole shoes. This model is suitable for simulation of both salient and no-salient pole generators. Winding function approach is used to define the self and mutual inductance which has enabled to take into account the non-sinusoidal distribution of stator and rotor windings. The equivalent airgap length distribution function is used to model the shape of the salient pole rotor and non-uniform saturation of the pole shoe. Simulation and experimental tests were carried out to validate this modeling method. The developed model can be used to analyze an autonomous power systems, in which a single generator has a significant impact on the power quality.

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Model-Based Digital Generator Control Unit for a Variable Frequency Synchronous Generator With Brushless Exciter

Cited by 36 publications

References 15 publications

Research on self-excited initiation of a Medium-voltage DC (MVDC) multiphase synchronous generator-rectifier system

Research on self-excited initiation of a Medium-voltage DC (MVDC) multiphase synchronous generator-rectifier system

Robust synchronous generator excitation based on novel feedforward control

Synchronous generator model taking into account the non-uniform saturation of the pole shoes

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