• Title, Summary, Keyword: Single Phase Induction Motor

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The speed control of the Single-Phase induction motor using P-I controller (비례 - 적분 제어기를 이용한 단상 유도 전동기의 속도 제어)

  • Sang, Doo-Whan;Cheong, Dal-Ho;Kim, Jung-Chul;Oh, Min-Jin
    • Proceedings of the KIEE Conference
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    • pp.603-605
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    • 1994
  • The Single-Phase induction motor is widely used in home appliances, especially refrigerator, air conditioner and washing machine. Recently many home appliances that use the motor require the speed control to get the various and convenient functions for the customers. Generally it is so hard to control the speed of the Single-Phase induction motor and to get the wide range of the speed variation. In this raper, the speed controller using P-I is designed for the Single-Phase induct ion Motor. The experimental results of the phase controller using P-I show the wide speed control of the Single-Phase induction motor and rebuff control to load change.

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A Study on the Performance Analysis of Single-Phase Induction Motor Considering Asymmetrical Concept (비대칭성개념(非對稱性槪念)을 고려한 단상전원용유도전동기(單相電源用誘導電動機)의 특성해석(特性解析)에 관한 연구(硏究))

  • Lee, Il-Chun;Kim, Chul-Woo;Hwang, Young-Moon
    • Proceedings of the KIEE Conference
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    • pp.5-9
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    • 1989
  • In this paper, while 2-or 3-phase induction motor is driven with balance and no noise driving at dynamic and steady state condition. Single-phase induction motor is driven with pulsating torque except specific driving point. So we analyze the reason of producing pulsating torque with the view of unsymmetring concept. These results are applied to the design of high efficincy, high quality single-phase induction motor.

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A Study on Current and Torque Characteristics Of Three-Phase Induction Motor in Single-Phase Operation. (삼상유도전동기의 결상시 전류 및 회전력특성에 관한 연구)

  • 유춘식;노창주
    • Journal of the Korean Society of Marine Engineering
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    • v.6 no.1
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    • pp.25-33
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    • 1982
  • The characteristics of the stator current and torque of a small three- phase squirrel cage induction motor and studied experimentally under the situation of a single-phase operation due to various causes. Through the experiments, the torque-slip and current-slip curve of single-phase circuit as well as three-phase circuit are obtained and the needed constants are determined. The stator current and torque are calculated by the current and torque equations derived by the unbalanced circuit theory. The numerical values obtained from the above methods are compared with the experimental values under the same conditions. The results of the study are summerized as follow; 1) The values computed by the unbalanced circuit theory generally come to approach the values recorded through experiments. 2) Near the rated load, speed drop is less than 1.2 per cent of the speed of three-phase induction motor and torque reduces less than 3 per cent of it of three-phase induction motor when three-phase induction motor is run under a single-phase. On the other hand, the stator current in a single-phase circuit is more than 1.9 times of it in three-phase circuit. 3) The stalling torque in a single-phase circuit is reduced to about 41 per cent of it in three-phase circuit while the corresponding slip is moved toward the synchroneous speed and the corresponding stator current is increased.

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The design of a torque controller for single phase induction motor using phase angle (위상각제어에 의한 단상유도전동기의 토크제어기설계)

  • Lim, Y.C.;Choi, C.H.;Na, S.H.;Jung, Y.G.;Chang, H.C.;Chang, Y.H.
    • Proceedings of the KIEE Conference
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    • pp.908-911
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    • 1993
  • The single-Phase induction motor is widely used in many light duty applications. especially in home and the office. At present, many applications which use these motor require continuously adjustable speed control. In the general, the speed control of single-phase induction motor is accomplished at a few discrete speeds by using tapped-windings, pole switching or gear. These techniques is inefficient and complicated. In this paper, auxiliary winding voltage phase angle of single-phase induction motor is used to continuously adjust electromagnetic torque. The analysis includes the determination of the relationship between the auauxiliary winding voltage phase angle and torque. Simulation results of the motor's torque-speed characteristics using the controlled auxiliary winding supply are shown and discussed. The drive is tested using a dynamometer to experimentally verify the results of the theory and simulations.

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Equivalent Circuit Analysis of Single Phase Induction Motor Considering Magnetic Saturation Characteristics (자기포화 특성을 고려한 단상유도전동기의 등가회로 해석)

  • Kim, Young Sun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.62 no.2
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    • pp.270-277
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    • 2013
  • Single phase induction motor(SPIM) is used widely because it is driven by single phase source. However, the efficiency of the motor is not good due to saturation of magnetic material. To analyze the motor accurately, the magnetic saturation characteristics should be considered in analysis of equivalent circuit. In this paper, lumped parameter of circuit are derived from multi phase induction motor using method of symmetrical coordinates. Also, we presents a method for the equivalent circuit analysis of SPIM using magnetic saturation rate. The magnetic nonlinearity is considered deriving magnetizing reactance from voltage-current saturation curve. As a results, current characteristic, torque, output and efficiency are shown through analysis of equivalent circuit. A simulation results of SPIM will be used to improve the characteristics and efficiency of motor.

A Study on the Susceptibility of Single-phase Sensitive Loads and the Three-phase Induction Motor by Voltage Sag (순간전압강하에 의한 단상 민감부하 및 삼상 유도전동기의 외란 민감도에 관한 연구)

  • Yun Sang-Yun;Moon Jong-Fil;Kim Jae-Chul;Lee Hee-Tae
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.55 no.1
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    • pp.37-44
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    • 2006
  • In this paper we explore the susceptibility of common sensitive loads by voltage sags of power distribution systems. The experimental approach was used for obtaining the susceptibility of single-phase loads and the three-phase induction motor. The experimental result of single-phase loads was transformed to the ITIC(Information of Technology Industry Council) format and used for evaluating the adverse impacts of a individual and repetitive sags using the performance contour of the foreign standard data. In order to assess the impact of voltage sags on three-phase induction motor, also, the experiment was peformed. The experiment was focused on the current, torque, and speed loss of the motor during a voltage sag. For comparing the impacts of individual and repetitive voltage sags, the variations of motor torque is focused among the experimental results. The sensitive curves of instantaneous current peak are used to describe the susceptibility of three-phase induction motor and 진so it were used for the quantitative analysis of the impact of three-phase induction motor due to voltage sags. Through the results of experiment, we verified that some types loads have more severe impact at repetitive voltage sags than individual ones and proposed method can be effectively used to evaluate the actual impact of voltage sags.

High Performance of Single-Phase Induction Motor with Vector Control (단상 유도전동기의 벡터제어에 의한 고성능 운전)

  • Lee, Kyung-Joo;Lee, Deuk-Ki;Kim, Jin-Kyu;Jung, Jong-Jin;Kim, Heung-Gun
    • Proceedings of the KIEE Conference
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    • pp.2776-2779
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    • 1999
  • This paper describes the vector control of a single-phase induction motor drive system to improve the dynamic performance for low power applications. Using auxiliary winding which is only utilized for starting, the single-phase induction motor is regarded as the unsymmetrical two-phase motor. This paper shows that the vector control of single-phase induction motor with new method achieves the high performance of the motor. The results of the new method are illustrated by the simulations.

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A Study on the Development of Single-phase Linear Induction Motor (단상 Linear Induction Motor의 개발연구)

  • Dal Ho Im
    • 전기의세계
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    • v.26 no.5
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    • pp.65-73
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    • 1977
  • This paper work treats with the basic characteristics to be investigated in development of a single-phase linear induction motor. The results of this research work have established some important characteristics which should be taken into consideration in the design and construction of this linear motor, And it is also proven that the development of high-voltage linear machine with large capacity is possible.

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Method of Optimum Efficiency to Coefficient of Utilization for Single Phase Induction Motor (단상 유도전동기의 이용률 변동에 대한 최적효율 산정기법)

  • Kim, Yang-Ho;Kim, Young-Sun
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.55 no.4
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    • pp.155-160
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    • 2006
  • In this paper, deduced suitable optimization to request output condition after taking closely characteristic data of single phase induction motor(SIM) which is the possibility becoming economic is coming to be demanded. Motor proper move connection data took advantage of result of existing data and iron loss and copper loss, mechanical loss took advantage of statistical data, and decide motor move laking advantage of saving data and secondary resistance and optimum purpose of method that is proposed through single phase induction motor and comparison performance evaluation having on the same output parameter. That decide material factor, electric power damage ratio, and coefficient of utilization for optimum function by method that search request output and optimum values of efficiency case by case and decided is proper that is saved after take magnetizing reactance relationship. This research result which it sees against a material expense with use coefficient of utilization which is included in loss expense decides the same plan variable back the place efficiency is useful and will be applied.

The Auxiliary Winding Control Characteristics of Single-Phase Induction Motor by Universal Starting Switch (범용 기동기에 의한 단상유도전동기의 보조권선 제어 특성)

  • 임홍우;임병옥;정수복;조금배;백형래
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.53 no.6
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    • pp.396-401
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    • 2004
  • Single phase induction motor(SPIM) is one of the most widely used type of low power AC motors in the world, especially for domestic or commercial applications where a three phase power supply is not available. Single phase induction motors have no starting torque their own. So there are several ways of starting single phase induction motors. The most common type is the starting capacitor installed in series with the auxiliary winding to increase the starting torque. In the conventional systems, this function is conducted by a centrifugal switch. But the mechanical centrifugal switch has many problems such as switch malfunction. This paper presents the auxiliary winding control using digital universal starting switch to overcome these shortcomings of centrifugal switch.