The complex controller for three-phase induction motor direct torque control

Filho, Alfeu J. Sguarezi; Filho, Ernesto Ruppert

doi:10.1590/s0103-17592009000200012

Cited by 17 publications

(7 citation statements)

References 14 publications

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“…This expression can be implemented to allow the estimation of the stator flux, even though the induction machine is operating at low speed in a direct torque control system, as shown in [32].…”

Section: Stator Flux Estimationmentioning

confidence: 99%

Wireless Coded Deadbeat Power Control for Wind Energy Generation

Capovilla¹,

Filho²,

Casella³

et al. 2013

Modeling and Control Aspects of Wind Power Systems

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(FEC) [6]. This coding technique is used in all modern wireless digital systems and is essential to ensure the integrity of information, reducing significantly the Bit Error Rate (BER) and the latency of the information by adding redundancy to the transmitted information [7].There are currently several different schemes of FEC that are used in commercial wireless communication systems, for instance, the Reed Solomon (RS) coding [8], Convolutional Coding (CONV) [9], Turbo Coding (TC) [10,11], and Low Density Parity Check (LDPC) coding [12][13][14]. Among them, the LDPC coding is the one that presents the best performance, approaching significantly to the limits set by the seminal work of Shannon [15] and that shows an excellent compromise between decoding complexity and performance [13,16]. Besides, the LDPC coding has recently been added to the IEEE 802.16e Standard, commonly known as Worldwide Interoperability for Microwave Access (WiMAX) for mobile applications [17].

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Section: Stator Flux Estimationmentioning

confidence: 99%

Wireless Coded Deadbeat Power Control for Wind Energy Generation

Capovilla¹,

Filho²,

Casella³

et al. 2013

Modeling and Control Aspects of Wind Power Systems

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“…Due to the fact that the mechanical time constant is much greater then the electrical time constants. Thus Ñ ÓÒ×Ø ÒØ is a valid approximation for each sample period [18][19][20]. Hence the slip speed ×Ð ÓÒ×Ø ÒØ, due to the synchronous speed ½ ¾ was fixed by the grid and ¼Hz.…”

Section: Rotor Side Equationsmentioning

confidence: 99%

“…The control law that uses the reference Ü Ö at the · ½ and th sampling instants to calculate the input Ù can be formulated as (20) where Ü Ö ´ ·½µ and Ü Ö ´ µ is the reference at ·½ and sampling instant. The total input applied is given by…”

Section: The Stator Flux Decoupling and Deadbeat Controlmentioning

confidence: 99%

“…where Ù is achieved making (19) (20), considering that and was estimated correctly and treating the modeling errors as a disturbance to the controlled output , then it can be simplified by replacing the output with output errors that is given by…”

Section: The Stator Flux Decoupling and Deadbeat Controlmentioning

confidence: 99%

“…Since the applied rotor voltage is also constant during a power control period for voltage-fed PWM then (14) can be discretized at kth sampling instant and expressed in the state space form using (16) and making Ü ¾ À Ã Ù Ú ¾ Ä Ò Û ½ . It is given by equation The rotor voltage can be calculated by using the rotor currents at the ½, and · ½th sampling instant that can be seen in (20) and (24) and it is given by…”

Section: A Power Controlmentioning

confidence: 99%

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A Power Control Scheme For Doubly-fed Induction Generator

Filho¹,

Filho²,

Filho³

2009

Eletrônica de Potência

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This paper proposes a power control scheme for doubly-fed induction generator for variable speed wind power generation. This scheme uses stator flux decoupling and deadbeat control loops. The algorithm of the deadbeat calculates the voltage vector to be supplied to the rotor in order to guarantee that the active and reactive power reach their desired reference values. Because the generator leakage inductance and resistance information were required for this control method, the influence of the estimation errors for these parameters was also investigated. Simulations results are carried out for validation of the digital controller operation.Keywords -Doubly-fed induction generator, power control, wind energy,variable speed constant frequency applications.

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