A new equivalent circuit of induction motor based on the total linkage flux of the secondary windings

Nakano, Hirotami; Akagi, Hirofumi; Takahashi, Isao; Nabae, Akira

doi:10.1002/eej.4391030212

Cited by 18 publications

(8 citation statements)

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“…To simplify analysis, we make the following assumptions about equivalent circuit of induction motor . Resistance on the stator side is zero. Leakage inductance on both stator and rotor sides is zero. …”

Section: Theoretical Analysis Of Fluctuations In Capacitor Voltagementioning

confidence: 99%

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An Induction‐Motor Control Method for Minimization of Capacitor‐Voltage Fluctuations in a Modular Multilevel DSCC Inverter: Its Applications to a Quadratic‐Torque Load

Okazaki

Matsui

Muhoro

et al. 2017

Electrical Engineering Japan

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Summary This paper aims at minimizing capacitor‐voltage fluctuations inherent in a modular multilevel cascade inverter based on double‐star chopper cell (DSCC) or a modular multilevel DSCC inverter. The inverter can drive an induction motor loaded with a quadratic‐torque load. Both theoretical analysis and numerical calculation reveal that the voltage fluctuations can be minimized when the ratio of a magnetizing‐current component with respect to a torque‐current component in the motor current is set to unity, regardless of the motor mechanical speed. A three‐phase DSCC inverter is designed and constructed to drive a 380‐V, 15‐kW, 50‐Hz, four‐pole, induction motor loaded with a quadratic torque that is proportional to a square of the motor mechanical speed. Experimental results confirm the validity of the theoretical and numerical calculations.

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Section: Theoretical Analysis Of Fluctuations In Capacitor Voltagementioning

confidence: 99%

“…To simplify analysis, we make the following assumptions about equivalent circuit of induction motor [20].…”

Section: Variation Range Of Capacitor Voltage Ac Componentmentioning

confidence: 99%

An Induction‐Motor Control Method for Minimization of Capacitor‐Voltage Fluctuations in a Modular Multilevel DSCC Inverter: Its Applications to a Quadratic‐Torque Load

Okazaki

Matsui

Muhoro

et al. 2017

Electrical Engineering Japan

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“…I M and cosϕ M can be calculated uniquely from operating conditions of induction motor. Below, I M and cosϕ M are calculated using equivalent circuit in consideration of secondary flux linkage [19]. On the other hand, I S can be calculated from relationship between active power on grid and motor sides as shown below.…”

Section: Numerical Analysis Of Cluster Currentmentioning

confidence: 99%

A Low‐Speed, High‐Torque Motor Drive Using a Modular Multilevel Cascade Converter Based on Triple‐Star Bridge Cells (MMCC‐TSBC)

Kawamura

Hagiwara

Akagi

2016

Electrical Engineering Japan

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This paper provides an experiment-based discussion on a modular multilevel cascade converter based on triplestar bridge cells (MMCC-TSBC) for a low-speed hightorque motor drive. The TSBC is a direct ac-to-ac power converter capable of achieving bidirectional power flow as well as drawing and feeding three-phase sinusoidal input (supply-side) and output (motor-side) currents with any power factor at both sides. This paper discusses active dccapacitor-voltage control applied to the low-speed, hightorque motor drive. A specially designed downscaled system combining a 320-V, 38-Hz, 6-pole, 15-kW induction motor with a 400-V, 15-kW TSBC is constructed and tested to confirm the validity of the motor drive. Experimental waveforms obtained from the downscaled system confirm stable operation with the rated load torque across a range from a standstill to the rated speed, including satisfactory start-up performance. C⃝ 2016 Wiley Periodicals, Inc. Electr Eng Jpn, 198(4): 73-82, 2017; Published online in Wiley Online Library (wileyonlinelibrary.com).

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“…Nakano and others noted the problem of lack of uniqueness in parameter determination. They insisted that the equivalent circuit can describe only the steady state of motor behavior and proposed to describe it based on an equivalent circuit, by using five parameters including an arbitrary non-zero finite parameter [4].…”

Section: ) Compactness (Completeness)mentioning

confidence: 99%

“…A set of five electrical parameters in the T-type equivalent circuit, such as stator resistance, stator inductance, mutual inductance, rotor resistance, and rotor inductance, or five other parameters directly related to them, are associated with industrial motors. Traditionally, the stator-related parameters among them are determined by using no-load tests, and the rotor-related parameters by locked tests or simpler single-phase tests [3,4]. On the principle that rotor inductance cannot be determined uniquely from stator terminal signals, it is popular to assume that the rotor inductance is the same as the stator inductance.…”

Section: Introductionmentioning

confidence: 99%

New mathematical models of an induction motor using a minimum number of parameters

Shinnaka

1999

Elect. Eng. Jpn.

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This paper proposes new mathematical models of an induction motor that generates torque precisely under vector control. The proposed models for the controlled motor have desirable features in respect to preciseness and compactness. They guarantee the same relation between the stator voltage and current signals as does the conventional T‐type model consisting of five parameters. The number of parameters forming the new models is reduced to four, such as stator resistance, inverse of rotor time constant, stator inductance, and stator total leakage inductance, or another set of four related uniquely to them. The parameters are uniquely determined by the stator signals, in terms of which all controller parameters of the vector control system can be designed. ©1998 Scripta Technica, Electr Eng Jpn, 126(2): 48–55, 1999

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A new equivalent circuit of induction motor based on the total linkage flux of the secondary windings

Cited by 18 publications

References 0 publications

An Induction‐Motor Control Method for Minimization of Capacitor‐Voltage Fluctuations in a Modular Multilevel DSCC Inverter: Its Applications to a Quadratic‐Torque Load

An Induction‐Motor Control Method for Minimization of Capacitor‐Voltage Fluctuations in a Modular Multilevel DSCC Inverter: Its Applications to a Quadratic‐Torque Load

A Low‐Speed, High‐Torque Motor Drive Using a Modular Multilevel Cascade Converter Based on Triple‐Star Bridge Cells (MMCC‐TSBC)

New mathematical models of an induction motor using a minimum number of parameters

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