Analysis of Electric Machinery and Drive Systems

“…The turbine-governor system of SG controls the power-frequency characteristics. The electrical system of the SG modeled in d-q frame of the reference frame [13], which is identified by d-q in " Fig. 3," is given by.…”

Section: Model Of Dg1mentioning

confidence: 99%

“…kq, 1 kd ) and field winding ( 1 fd ). Matrices G and H are given in [13]. The dynamic model of the rotating mechanical system of DG1 is given by.…”

Section: Model Of Dg1mentioning

confidence: 99%

“…And are the mechanical and the air-gap torques, respectively [13] and (6) The excitation and governor systems of DG1 are represented by a generic dc excitation system [14], and the IEEE governor model based on the speed-droop characteristic [15].…”

Section: Model Of Dg1mentioning

confidence: 99%

“…Matrices and are given in [13]. The dynamic model of the rotating mechanical system of DG2 is given by (10) Where and are basic and rotor angular velocity and , and are the inertia constant, mechanical and electromagnetic torques, respectively; and (11) Where is the mutual reactance between rotor and stator windings [13].…”

Section: Model Of Dg2mentioning

confidence: 99%

See 2 more Smart Citations

Application of cooling, heating loads in an autonomous microgrid as a control strategy

Dahraie

Kermani

Najafi

2015

IJET

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In this paper, a control scheme is proposed for a microgrid. In the proposed scheme, by controlling cooling, heating loads (C/H loads), balance between generation and consumption power is kept, and the frequency remains within its nominal value. Application of storage systems imposes costs, operating and maintenance problems to the microgrid owners. Moreover, the charge and discharge process of batteries causes reduction in their lives time. The dominant concept of this scheme is to control frequency without any storage. In this case, the coincidence of generation and consumption in C/H load technology is not necessary. This control system changes the consumption power of C/H loads and responses to unbalance power of microgrid, fast. Moreover, two indices are defined to assess the performance of the microgrid.

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Non-linear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load

Lin

Tsai

2000

Int. J. Adapt. Control Signal Process.

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In this paper, a nonlinear indirect adaptive sensorless speed and flux tracking controller for induction motors is proposed. In the controller, only the stator currents are assumed to be measurable. Flux observers and rotor speed estimator are designed to relax the need to flux and speed measurement. Besides, two estimators are also designed to overcome drifting problem of the rotor resistance and unknown load torque. Rigorous stability analysis based on Lyapunov theory is also performed to guarantee that the controller designed here is stable. Computer simulations and experiments are done to demonstrate the performance of our design. Copyright © 2000 John Wiley & Sons, Ltd.

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Analysis of Electric Machinery and Drive Systems

Cited by 2,757 publications

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Performance of a Photovoltaic Pumping System Driven by a Single Phase Induction Motor Connected to a Photovoltaic Generator

Application of cooling, heating loads in an autonomous microgrid as a control strategy

Non-linear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load

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