A software modification procedure for conversion of a scalar controller to a vector type for an induction motor

M. Ebrahimi; H. Seifi; A. Shoulaie; H. S. Sarraf

A software modification procedure for conversion of a scalar controller to a vector type for an induction motor

M. Ebrahimi, H. Seifi, A. Shoulaie, H. S. Sarraf

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This paper establishes a relationship between two techniques for the control of current controlled induction motors, namely scalar control with flux loop and direct vector control. This is accomplished through theoretical comparison of the governing equations that relate the input and the output signals in the respective controllers. In traditional scalar control, the controller outputs are |I*_s| and ω*_e, while in vector type they are i^s*_ds and i^s*_qs In each method two signals are produced which define the reference current. It is desirable to improve these two controllers, so that similar information is derived for the reference current. With this achievement, it will be shown how an existing scalar controller may be converted to a vector control type (with improved responses) by software modifications. Computer simulation is demonstrated for a typical 3 HP motor.

Original language	English
Pages (from-to)	24-25
Number of pages	2
Journal	Iranian Journal of Science and Technology, Transaction B: Technology
Volume	23
Issue number	1
State	Published - 1999

Keywords

Induction motors
Scalar control
Software modification
Vector control

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title = "A software modification procedure for conversion of a scalar controller to a vector type for an induction motor",

abstract = "This paper establishes a relationship between two techniques for the control of current controlled induction motors, namely scalar control with flux loop and direct vector control. This is accomplished through theoretical comparison of the governing equations that relate the input and the output signals in the respective controllers. In traditional scalar control, the controller outputs are |I*s| and ω*e, while in vector type they are is*ds and is*qs In each method two signals are produced which define the reference current. It is desirable to improve these two controllers, so that similar information is derived for the reference current. With this achievement, it will be shown how an existing scalar controller may be converted to a vector control type (with improved responses) by software modifications. Computer simulation is demonstrated for a typical 3 HP motor.",

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AU - Ebrahimi, M.

AU - Seifi, H.

AU - Shoulaie, A.

AU - Sarraf, H. S.

PY - 1999

Y1 - 1999

N2 - This paper establishes a relationship between two techniques for the control of current controlled induction motors, namely scalar control with flux loop and direct vector control. This is accomplished through theoretical comparison of the governing equations that relate the input and the output signals in the respective controllers. In traditional scalar control, the controller outputs are |I*s| and ω*e, while in vector type they are is*ds and is*qs In each method two signals are produced which define the reference current. It is desirable to improve these two controllers, so that similar information is derived for the reference current. With this achievement, it will be shown how an existing scalar controller may be converted to a vector control type (with improved responses) by software modifications. Computer simulation is demonstrated for a typical 3 HP motor.

AB - This paper establishes a relationship between two techniques for the control of current controlled induction motors, namely scalar control with flux loop and direct vector control. This is accomplished through theoretical comparison of the governing equations that relate the input and the output signals in the respective controllers. In traditional scalar control, the controller outputs are |I*s| and ω*e, while in vector type they are is*ds and is*qs In each method two signals are produced which define the reference current. It is desirable to improve these two controllers, so that similar information is derived for the reference current. With this achievement, it will be shown how an existing scalar controller may be converted to a vector control type (with improved responses) by software modifications. Computer simulation is demonstrated for a typical 3 HP motor.

KW - Induction motors

KW - Scalar control

KW - Software modification

KW - Vector control

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