Direct torque control of induction motor soft starting

Oliveira, José de; Nied, Ademir; Dias, Rogério Pinho; Marques, Luiz Carlos de Souza

doi:10.1109/cobep.2009.5347626

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…Since the frequency of the grid voltage is constant, the operating point of the motor is relatively constant when using soft starters. To drive a motor using soft starters, there are phase control method [10]- [12], predictive control method [13]- [14], and DFC method [15]- [17]. In [10], a method of gradually increasing the applied voltage based on the preset rise time was proposed.…”

Section: Introductionmentioning

confidence: 99%

The Seamless Transition From Discrete Frequency Control to Phase Control Method Using Soft Starter

Jang,

Hyon,

Hwang

et al. 2024

IEEE Access

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Soft starters are used in a variety of industries to safely apply grid voltage to drive induction motors. The soft starter protect the motor from overcurrent and torque that occurs during starting of the motors by regulating the voltage applied to the motor. There are various methods to implement this soft starter, and among them, the discrete frequency control (DFC) method allows for simple operation, but research to limit the motor peak current is still insufficient. In this paper, a new method to limit the current and start the induction motor using the DFC was proposed. The proposed method calculates the feedforward component of the firing angle according to the speed command and add it to the output of additional controller to limit the current. The proposed method has the advantage of seamless transition to the phase control method when the speed command increases and can be implemented without structural change from the conventional phase control method. Using this method, it is implemented without motor parameter information, and the system efficiency is improved. The effectiveness of proposed method was verified through simulations and experiments.INDEX TERMS Soft starter, discrete frequency control (DFC), efficiency, induction motor.

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Section: Introductionmentioning

confidence: 99%

The Seamless Transition From Discrete Frequency Control to Phase Control Method Using Soft Starter

Jang,

Hyon,

Hwang

et al. 2024

IEEE Access

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show abstract

“…Many methods are used to soft startup of IMs, especially in case of big motors in literature and also those compared each other [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Soft and fast starting induction motors using controllable resistive type fault current limiter

Naderi

Negnevitsky

2015

2015 IEEE Power &Amp; Energy Society General Meeting

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Abstract-This paper proposes a controllable resistive type fault current limiter for soft and fast starting of induction motors (IMs) based on the primary resistance method. Two methods of constant current and minimized torque pulsations starting for the proposed FCL are presented. A comparison is done and it is shown that method of minimized torque pulsations by the proposed structure leads to a fast and soft starting for IM. Analytical analyses are performed in details and simulation results using PSCAD/EMTDC software are involved to validate the effectiveness of the proposed FCL and its control methods for the soft and fast starting up of IMs.

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