The Experts below are selected from a list of 38721 Experts worldwide ranked by ideXlab platform
Osamu Ichinokura - One of the best experts on this subject based on the ideXlab platform.
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Magnetic Circuit Model Considering Magnetic Hysteresis
Electrical Engineering in Japan, 2015Co-Authors: Hideaki Tanaka, Kenji Nakamura, Osamu IchinokuraAbstract:SUMMARY Quantitative estimation of core loss considering Magnetic hysteresis property is strongly required to develop high-efficient electrical machines. This paper presents a novel Magnetic Circuit model considering Magnetic hysteresis. In the proposed model, dc hysteresis loss is calculated by the Landau–Lifshitz–Gilbert (LLG) equation, while classical and anomalous eddy current losses are calculated in the Magnetic Circuit. It is demonstrated that the hysteresis loop under PWM wave excitation can be expressed by the proposed model. The validity and effectiveness of the method are proved by comparing with measured values.
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a new nonlinear Magnetic Circuit model for dynamic analysis of interior permanent magnet synchronous motor
Journal of Magnetism and Magnetic Materials, 2005Co-Authors: Kenji Nakamura, Kenichi Saito, T Watanabe, Osamu IchinokuraAbstract:Interior permanent magnet synchronous motors (IPMSMs) have high efficiency and torque, since the motors can utilize reluctance torque in addition to magnet torque. The IPMSMs are widely used for electric household appliances and electric bicycles and vehicles. A quantitative analysis method of dynamic characteristics of the IPMSMs, however, has not been clarified fully. For optimum design, investigation of dynamic characteristics considering Magnetic nonlinearity is needed. This paper presents a new nonlinear Magnetic Circuit model of an IPMSM, and suggests a dynamic analysis method using the proposed Magnetic Circuit model.
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Dynamic Analysis of Interior Permanent Magnet Motor Based on a Magnetic Circuit Model
IEEE Transactions on Magnetics, 2003Co-Authors: Kenji Nakamura, Kenichi Saito, Osamu IchinokuraAbstract:This paper presents a new Magnetic Circuit model of an interior permanent magnet (IPM) motor for use in SPICE, which is the general-purpose Circuit-simulation program. The Magnetic Circuit model consists of reluctances and permanent magnet magnetomotive-force sources. In the SPICE simulation, a Magnetic Circuit model of the IPM motor and its driving Circuit are coupled by a proper Circuit. Using the proposed model, we can calculate dynamic characteristics of the IPM motor easily.
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An Analysis of Fundamental Characteristics of a Bridge-Connected Magnetic Circuit by Making Use of SPICE
IEEE Translation Journal on Magnetics in Japan, 1994Co-Authors: S. Okanuma, Osamu Ichinokura, Koichi MurakamiAbstract:In this paper, we describe a numerical model of a bridge-connected Magnetic Circuit for use in the SPICE simulation system. The model was devised on the basis of a bridge-connected Magnetic Circuit with saturation and hysteresis effects. As an example of application of the SPICE model, we analyzed using a bridge-connected Magnetic Circuit and a saturable core the transient behavior of a power measurement Circuit caused by the principle of Magnetic oscillation, The calculated results agree well with measurements. A SPICE model of the bridge-connected Magnetic Circuit presented here is useful for analysis and design optimization of power measurement Circuits.
Kenji Nakamura - One of the best experts on this subject based on the ideXlab platform.
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Magnetic Circuit Model Considering Magnetic Hysteresis
Electrical Engineering in Japan, 2015Co-Authors: Hideaki Tanaka, Kenji Nakamura, Osamu IchinokuraAbstract:SUMMARY Quantitative estimation of core loss considering Magnetic hysteresis property is strongly required to develop high-efficient electrical machines. This paper presents a novel Magnetic Circuit model considering Magnetic hysteresis. In the proposed model, dc hysteresis loss is calculated by the Landau–Lifshitz–Gilbert (LLG) equation, while classical and anomalous eddy current losses are calculated in the Magnetic Circuit. It is demonstrated that the hysteresis loop under PWM wave excitation can be expressed by the proposed model. The validity and effectiveness of the method are proved by comparing with measured values.
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a new nonlinear Magnetic Circuit model for dynamic analysis of interior permanent magnet synchronous motor
Journal of Magnetism and Magnetic Materials, 2005Co-Authors: Kenji Nakamura, Kenichi Saito, T Watanabe, Osamu IchinokuraAbstract:Interior permanent magnet synchronous motors (IPMSMs) have high efficiency and torque, since the motors can utilize reluctance torque in addition to magnet torque. The IPMSMs are widely used for electric household appliances and electric bicycles and vehicles. A quantitative analysis method of dynamic characteristics of the IPMSMs, however, has not been clarified fully. For optimum design, investigation of dynamic characteristics considering Magnetic nonlinearity is needed. This paper presents a new nonlinear Magnetic Circuit model of an IPMSM, and suggests a dynamic analysis method using the proposed Magnetic Circuit model.
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Dynamic Analysis of Interior Permanent Magnet Motor Based on a Magnetic Circuit Model
IEEE Transactions on Magnetics, 2003Co-Authors: Kenji Nakamura, Kenichi Saito, Osamu IchinokuraAbstract:This paper presents a new Magnetic Circuit model of an interior permanent magnet (IPM) motor for use in SPICE, which is the general-purpose Circuit-simulation program. The Magnetic Circuit model consists of reluctances and permanent magnet magnetomotive-force sources. In the SPICE simulation, a Magnetic Circuit model of the IPM motor and its driving Circuit are coupled by a proper Circuit. Using the proposed model, we can calculate dynamic characteristics of the IPM motor easily.
Valentin Asanbayev - One of the best experts on this subject based on the ideXlab platform.
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The Magnetic Circuit Regions: The Magnetizing Reactance Values
Alternating Current Multi-Circuit Electric Machines, 2014Co-Authors: Valentin AsanbayevAbstract:The magnetizing reactance of an induction machine x m is calculated by the expression given in ( 2.39). In the specific system of units, the magnetizing reactance x m is determined by the expression obtained in ( 3.21). The magnetizing reactance is defined as the result of calculating the electric machine Magnetic Circuit. In this chapter, the Magnetic Circuit is calculated by the use of an electric equivalent Circuit, the elements of which represent the magnetizing reactance values of Magnetic Circuit regions. So, the magnetizing reactance x m can be expressed through the values of the magnetizing reactance values of the electric machine Magnetic Circuit regions. Below, we consider the features of the determination of the magnetizing reactance values of the Magnetic Circuit regions. In this chapter for this purpose, we use the total current law.
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Cylindrical Magnetic Circuit Regions: Magnetizing Reactance Values
Alternating Current Multi-Circuit Electric Machines, 2014Co-Authors: Valentin AsanbayevAbstract:The magnetizing reactance values obtained in Chap. 4 correspond to the condition when the Magnetic flux in the regions of the Magnetic Circuit is constant for a given value of the air gap emf. In the stator and rotor regions (with the exception of the stator and rotor joke regions), as well as in the air gap, Magnetic flux is determined by the radial component of the Magnetic induction, the value of which does not change within a single region. For the stator and rotor joke regions, average Magnetic lines are introduced for which the average values of the tangential components of the Magnetic inductions do not change. However, in the cross-section of an electric machine, both radial and tangential components of Magnetic field strength take place. Therefore, the Magnetic flux determined for a given value of the air gap emf changes over the cross-sections of the Magnetic Circuit regions. In this connection, the magnetizing reactance values generally should be calculated taking into account the changed of Magnetic flux in the regions of the Magnetic Circuit. Let us consider below the features for determining the magnetizing reactance values of the Magnetic Circuit regions, taking into account these changes.
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Magnetic Circuit Regions: Magnetizing Reactance Values in Terms of the Curvature
Alternating Current Multi-Circuit Electric Machines, 2014Co-Authors: Valentin AsanbayevAbstract:In Chap. 5, magnetizing reactance values of stator and rotor Magnetic Circuit regions were obtained on the basis of their cylindrical models. In practice, expressions for magnetizing reactance values determined via the planar Magnetic Circuit model are preferred. When using the planar model, magnetizing reactance values of the Magnetic Circuit regions are described by the hyperbolic function. In this case, we have sufficient simple and visual expressions that simplify the analysis process. Stator and rotor magnetizing reactance values obtained in Chap. 5 on the basis of the cylindrical Magnetic Circuit models are represented in this chapter through corresponding planar model expressions. Expressions of magnetizing reactance values obtained in this way take into account the curvature of the surfaces of the Magnetic Circuit regions. As a result, simpler expressions for magnetizing reactance values of Magnetic Circuit regions are derived. This provision is realized in this chapter.
Kenichi Saito - One of the best experts on this subject based on the ideXlab platform.
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a new nonlinear Magnetic Circuit model for dynamic analysis of interior permanent magnet synchronous motor
Journal of Magnetism and Magnetic Materials, 2005Co-Authors: Kenji Nakamura, Kenichi Saito, T Watanabe, Osamu IchinokuraAbstract:Interior permanent magnet synchronous motors (IPMSMs) have high efficiency and torque, since the motors can utilize reluctance torque in addition to magnet torque. The IPMSMs are widely used for electric household appliances and electric bicycles and vehicles. A quantitative analysis method of dynamic characteristics of the IPMSMs, however, has not been clarified fully. For optimum design, investigation of dynamic characteristics considering Magnetic nonlinearity is needed. This paper presents a new nonlinear Magnetic Circuit model of an IPMSM, and suggests a dynamic analysis method using the proposed Magnetic Circuit model.
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Dynamic Analysis of Interior Permanent Magnet Motor Based on a Magnetic Circuit Model
IEEE Transactions on Magnetics, 2003Co-Authors: Kenji Nakamura, Kenichi Saito, Osamu IchinokuraAbstract:This paper presents a new Magnetic Circuit model of an interior permanent magnet (IPM) motor for use in SPICE, which is the general-purpose Circuit-simulation program. The Magnetic Circuit model consists of reluctances and permanent magnet magnetomotive-force sources. In the SPICE simulation, a Magnetic Circuit model of the IPM motor and its driving Circuit are coupled by a proper Circuit. Using the proposed model, we can calculate dynamic characteristics of the IPM motor easily.
T Watanabe - One of the best experts on this subject based on the ideXlab platform.
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a new nonlinear Magnetic Circuit model for dynamic analysis of interior permanent magnet synchronous motor
Journal of Magnetism and Magnetic Materials, 2005Co-Authors: Kenji Nakamura, Kenichi Saito, T Watanabe, Osamu IchinokuraAbstract:Interior permanent magnet synchronous motors (IPMSMs) have high efficiency and torque, since the motors can utilize reluctance torque in addition to magnet torque. The IPMSMs are widely used for electric household appliances and electric bicycles and vehicles. A quantitative analysis method of dynamic characteristics of the IPMSMs, however, has not been clarified fully. For optimum design, investigation of dynamic characteristics considering Magnetic nonlinearity is needed. This paper presents a new nonlinear Magnetic Circuit model of an IPMSM, and suggests a dynamic analysis method using the proposed Magnetic Circuit model.
