• Title, Summary, Keyword: Single Phase Induction Motor

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Study on Losses Segregation for Capacitor-Run Single Phase Induction Motor (커패시터 구동형 단상유도전동기의 손실분리에 대한 연구)

  • Kim, Kwang-Soo;Kim, Ki-Chan;Lee, Sung-Gu;Go, Sung-Chul;Chun, Yon-Do;Lee, Chul-Kyu;Lee, Ju
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.9
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    • pp.1546-1551
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    • 2008
  • This paper is concerned with the problems of accurate losses segregation in capacitor-run single phase motor. Segregation of losses in single phase induction motor is more complicated than that in three phase induction motor, because of the backward magnetic field component in the motor. Generally there are two methods for losses segregation of single phase induction motor. The one is relatively complicated method based on parameter estimation of single phase induction motor. By the way, the other one is simplified method based on IEEE Standard 114. All of the methods for the experimental determination of single phase induction motor losses are studied in this paper. Since the IEEE Standard is not possible to be applied for all type of single phase induction motors, we modified that method to apply for losses segregation of capacitor-run single phase induction motor as unifying the method based on parameter estimation.

Study of Losses segregation for Capacitor-Run Single phase Induction Motor (커패시터 구동형 단상 유도전동기의 손실분리 연구)

  • Kim, Kwang-Soo;Kim, Ki-Chan;Lee, Sang-Hoon;Lee, Ju
    • Proceedings of the KIEE Conference
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    • pp.16-18
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    • 2008
  • Several methods are proposed in the literature for losses segregation of single phase induction motor. Generally we could divide two methods for experimental determination of losses segregation for single phase induction motor. The one is relatively complicated method based on Parameter estimation of single phase induction motor. The other is simple method based on IEEE Standard 114. Segregation of losses in single phase induction motor is more complicated than that in three phase induction motor, because of the backward magnetic field component in the motor and multiplicity of different single phase type. In this paper, therefore, we studied losses segregation of capacitor-run single phase induction motor.

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Output Characteristics of Capacitor-run type Single Phase Induction Motor considering Capacitance (구동 커패시터의 용량에 따른 단상유도전동기 출력특성에 관한 연구)

  • Kim, Cherl-Jin;Lee, Dal-Eun;Jin, Yong-Sun;Choi, Chul-Yong;Baek, Soo-Hyun
    • Proceedings of the KIEE Conference
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    • pp.848-850
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    • 2002
  • Single phase induction motor is directly used usual source, it can be a source of an appliance such as mechanical fan, refrigerator, washing machine, etc. Especially capacitor-run single phase induction motor is suitable to make more inexpensive and high efficient products because it is more high efficiency, and good to start than other single phase induction motors. Generally, voltage and current of capacitor-run single phase induction motor transfer to the part of positive phase and negative phase based on two motor theory. In this paper, we simulate the torque characteristics to capacitance variation from single phase induction motor's equivalent circuit. Through the test using the real motor, we compare and investigate the maximum torque of run state related with capacitance and the adequacy of the converted model.

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A Study of Winding Design for Capacitor Run Single phase Induction Motor (커패시터 구동형 단상유도전동기의 권선설계에 대한 연구)

  • Ham, Sang-Hwan;Im, Jong-Bin;Lee, Ju
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.4
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    • pp.776-780
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    • 2011
  • This paper is concerned with winding design in capacitor-run single phase motor. Winding design in single phase induction motor is more complicated than that in three phase induction motor, because of using concentric winding in the single phase. Various winding designs are possible, and accordingly layout of the slot is calculated by formula. And then accurate design of winding is available. Using the design process in this paper, we can get the base model with slot layout and turns of windings of 1.12 kW single phase induction motor, and it is verified by finite element analysis. In this paper, winding design and winding layout of single-phase induction motor using concentric winding are suggested.

The Design of Rotor Bars of Single-Phase Line-Start Permanent Magnet Motor for Improving Starting Characteristics (단상 유도동기전동기의 기동 특성 개선을 위한 회전자 바 형상 설계)

  • Lee Chul-kyu;Kwon Soon-hyo;Yang Byung-yull;Kwon Byung-il
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.54 no.8
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    • pp.370-376
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    • 2005
  • The single-phase induction motor is simple and durable, but the efficiency is low. Therefore, electric motors like HLDC and LSPM(line-start permanent magnet motor) that use the permanent magnet have been studied. The most advantages of single-phase LSPM is having the same stator as the stator of the single-phase induction motor and permanent magnets are just inserted in the squirrel cage rotor of the single-phase induction motor. But the characteristics of single-phase LSPM synchronous motor has very complex characteristics until the synchronization and if the design is not suitable, the single-phase LSPM synchronous motor cannot be synchronized. We designed a single-phase LSPM using the same stator and winding as the conventional single-phase induction motor, but newly designed the permanent magnets considering air gap magnetic flux density. The transient characteristics of the single-phase LSPM is not good because of a magnetic breaking torque, however, it can be improved by redesigning the rotor bars. We are proposed the design method of rotor bar for the single-phase LSPM to start softly and to make synchronization easily.

Torque characteristic of single phase induction motor for phase control mode (위상 제어 방식 단상유도전동기의 토크 특성)

  • Kim, Cherl-Jin;Choi, Chul-Yong;Lee, Dal-Eun;Yoon, Shin-Yong;Baek, Soo-Hyun
    • Proceedings of the KIEE Conference
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    • pp.107-109
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    • 2003
  • Single phase induction motor is directly used usual source, it can be a source of an appliance such as mechanical fan, refrigerator, washing machine, etc. Especially capacitor-run single phase induction motor is suitable to make more inexpensive and high efficient products because it is more high efficiency, and good to start than other single phase induction motors. Generally, voltage and current of capacitor-run single phase induction motor transfer to the part of positive phase and negative phase based on two motor theory. In this paper, we simulate the torque characteristics to capacitance variation from single phase induction motor's equivalent circuit. Through the test using the real motor, we compare and investigate the maximum torque of run state related with capacitance and the adequacy of the converted model.

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Comparison of Dynamic Characteristics of the Single phase induction motor at Single Phase and Two Phase control (단상 유도전동기의 단상 및 2상 제어 운전시 동작특성 비교)

  • Yang, B.Y.;Kwon, S.H.;Kwon, B.I.;Lee, C.G.
    • Proceedings of the KIEE Conference
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    • pp.936-938
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    • 2003
  • The single Phase induction motor is used to small size electronic appliance by production cost of a low-cost. But, it is low efficiency large torque ripple and impossible speed control. However we can change the speed if it similar to the three phase induction motor. And we studied about the two phase induction motor that torque ripple is smaller. So, in this paper the dynamic characteristics of the two phase induction motor are described and compared with the cage-type single phase induction motor to find the characteristics of the torque ripple and current, speed through the time-stepped finite element method.

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Characteristics of the Two-phase Induction Motor By the Inverter Fed Control

  • Yang Byoung-Yull;Kwon Byung-Il
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.5B no.4
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    • pp.312-316
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    • 2005
  • The single phase induction motor has been commonly applied to small-sized electrical appliances because of its low cost, but it has low efficiency and large torque ripple, and it is incapable of speed control. However, two-phase induction motors have small torque ripple, high efficiency and variable speed control, because they are inverter fed. In this paper, the dynamic characteristics of the two-phase induction motor, such as the torque ripple, current and speed, are analyzed by using the time-stepping finite element method, and compared with the cage-type single phase induction motor.

Performances of Current-Waveform Modulated Single-Phase Induction Machine (전류파형을 변조한 단상유도전동기구의 특성에 관한 연구)

  • 황영문;김철우;박용규
    • 전기의세계
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    • v.24 no.1
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    • pp.55-62
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    • 1975
  • A single-phase induction motor with it's stator winding splitted into two series windings, of which the terminals of one winding is switched pulsationally by a thyristor type ON-OFF device so that the motor may operate as a pulsational shaded-pole motor, can modulate current waveforms of it's two series windings. In view of current waveform modulation method, a single-phase single-winding motor operates as a two-phase induction motor with asymmetrical axis windings where the starting torque can be obtained effectively without an auxiliary capacitor attached and it's running speed controlled by shifting phase between current waveforms differently. Equivalent circuit for analysis is modified from a double revolving field equivalent circuit of a single-phase induction motor with asymmetrical windings whose angle is 45.deg.C elet. degrees. Analysis and test results show that ON-OFF action of the pulsational shaded-pole winding has the same effect of a series capacitor, and then at heavy loads this motor operates with a small amonut of the input current than that having the fixed shaded-pole winding.

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The Low Current Starting Simulation of a Single Phase Induction Motor Using Sliding Mode Control (슬라이딩 모드 제어를 이용한 단상 유도전동기의 저 전류 기동 시뮬레이션)

  • Kim, Hyo-Ki;Lee, Byung-Ha
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.21 no.8
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    • pp.44-53
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    • 2007
  • In this paper, the Sliding Mode Controller is applied to reduce the starting current of the single phase induction motor. The input voltage to the single phase induction motor is controlled so that the starting current of the motor may be maintained within the rating value and the velocity is also controlled, by adjusting the switching function of the Sliding Mode Controller. The switching of sliding control made appropriately with regard to velocity error signal and acceleration signal. It is shown that the starting characteristics of the single phase induction motor(SPIM) can be greatly enhanced through the sliding control of single phase induction motor.