Application Catalog


2016-10-25

Iron loss analysis / Loss analysis



206 - Temperature Analysis of an Oil-Immersed Transformer Using a Coupled Magnetic Field and Thermal Fluid Analysis

206 - Temperature Analysis of an Oil-Immersed Transformer Using a Coupled Magnetic Field and Thermal Fluid Analysis

Large power transformers are used to transform high voltage power generated at a power station into power that can be transmitted. For the structure of the transformer, oil-immersed transformers, which fill the inside of the tank that contains the transformer body with insulating oil for cooling and insulation, are often used.

Module: FQ, LS | 2014-12-25




203_PowerTransformer_No-LoadTest.html

203_PowerTransformer_No-LoadTest.html

Large-scale power transformers are expected to be highly-reliable as machinery that will support the industry infrastructure, but unfortunately, it is impossible to conduct tests connecting to actual load. For this reason, tests of special circuit structure including no-load tests and contradiction tests are run.

Module: FQ, LS | 2014-12-15




202 - Core Stray Loss Analysis of Power Transformer

202 - Core Stray Loss Analysis of Power Transformer

Stray loss is mainly caused by leakage flux from winding, but structures closer to the winding will tend to be affected easier by leakage flux. The ratio of stray loss relative to all losses may not necessarily be large but heat is generated in certain areas and may become an issue in the operation of transformers.

Module: FQ, LS | 2014-12-15




201 - Iron Loss Analysis of an SR Motor

201 - Iron Loss Analysis of an SR Motor

With the skyrocketing prices of rare earth magnets, expectations have been rising for SR (switched reluctance) motors because they have a motor format that does not use permanent magnets. SR motors have a simple structure that can achieve solid performance at a low price. However, since they do not use permanent magnets,

Module:DP | 2014-12-15




200 - Iron Loss Analysis of IPM Motor using Hysteresis Model

200 - Iron Loss Analysis of IPM Motor using Hysteresis Model

Recently, PM motors are being applied in home appliances and electric automobiles, and the demand for compactness and high power is increasing. On the other hand, small and high-power motors tend to be affected by high-frequency components due to magnetic saturation and high rotations, which results...

Module:DP, LS | 2014-12-10




185 - Analysis of Stray Loss in a Power Transformer

185 - Analysis of Stray Loss in a Power Transformer

Transformers are made to be used long-term, so it has become an important design policy to control running costs from losses. These losses include copper loss in the coil and iron loss in the core. In high-capacity transformers, however, there is also stray loss in the tank from flux leakage from the core.

Module:FQ, LS | 2014-04-25




181 - Analysis of SR Motor Drive Characteristics

181 - Analysis of SR Motor Drive Characteristics Updated

With the skyrocketing prices of rare earth magnets, expectations have been rising for SR (switched reluctance) motors because they have a motor format that does not use permanent magnets. SR motors have a simple structure that can achieve solid performance at a low price.

Module:DP, LS | 2016-10-25




177 - Torque Characteristic Analysis of a Three Phase Induction Motor

177 - Torque Characteristic Analysis of a Three Phase Induction Motor

An induction motor is a motor in which the rotating magnetic field of the stator coils causes induced current to flow in an auxiliary conductor, which exerts force on the rotor in the rotational direction and causes it to spin. Induction motors are widely used in everything from industrial machines to home appliances...

Module:DP,LS | 2012-08-31




176 - Drive Characteristic Analysis of a Three-Phase Induction Motor

176 - Drive Characteristic Analysis of a Three-Phase Induction Motor

An induction motor is a motor in which the rotating magnetic field of the stator coils causes induced current to flow in an auxiliary conductor, which exerts force on the rotor in the rotational direction and causes it to spin. Induction motors are widely used in everything from industrial machines to home appliances...

Module:DP,LS | 2012-08-31




167 - Iron Loss Analysis of a Three Phase Induction Motor

167 - Iron Loss Analysis of a Three Phase Induction Motor

An induction motor is a motor in which the rotating magnetic field of the stator coils causes induced current to flow in an auxiliary conductor, which produces force in the rotational direction.
Induction motors are widely used in everything from industrial machines to home appliances...

Module:DP,LS | 2013-06-25




157 - Analysis of Eddy Currents in an IPM Motor Using the Gap Flux Boundary

157 - Analysis of Eddy Currents in an IPM Motor Using the Gap Flux Boundary

It is becoming increasingly common for permanent magnet motors to use rare earth magnets in order to achieve higher output density because they have a high energy product. Neodymium rare earth magnets have a high electric conductivity because they contain a great deal of iron, so when a varying magnetic field...

Module:DP, FQ | 2014-10-03




148 - Loss Analysis of a Power Transformer (Flyback Converter)

148 - Loss Analysis of a Power Transformer (Flyback Converter)

A flyback converter is a well-known system for small capacity power supplies in the several-dozen W class. They are cheap and have a simple structure, so they are widely used as converters for pressurization in home appliances.

Module:DP,LS,TR,TS | 2014-06-25




146 - Analysis of Stray Loss in a Transformer

146 - Analysis of Stray Loss in a Transformer

Transformers are made to be used long-term, so it has become an important design policy to control running costs from losses. These losses include copper loss in the coil and iron loss in the core. In high-capacity transformers, however, there is also stray loss in the tank from flux leakage from the core.

Module:FQ,HT,LS | 2013-06-25




142 - Press Fit Analysis of a Divided Core

142 - Press Fit Analysis of a Divided Core

Smaller size and higher output are being demanded of the motors used for applications such as air conditioning compressors. One production technique for achieving this is a higher lamination factor in divided cores. The stress caused by press-fitting a divided stator core into a frame is known to increase iron loss...

Module:DP,DS,LS | 2013-02-25




132 - Loss Analysis of a Three-phase Transformer

132 - Loss Analysis of a Three-phase Transformer

Mid- and large-sized power transformers need to be able to operate over the long term, so they are always required to control running costs from losses. Iron loss is one of the main losses in a transformer, and it can lead to temperature increases and efficiency decreases because it consumes electric power as heat...

Module:FQ,LS | 2013-06-17




117 - Iron Loss Analysis of a Transformer

117 - Iron Loss Analysis of a Transformer

Mid- and large-sized power transformers need to be able to operate over the long term, so they are always required to control running costs from losses. Iron loss is one of the main losses in a transformer, and it can lead to temperature increases and efficiency decreases because it consumes electric power...

Module:FQ, LS | 2013-06-17




100 - Surface Heating Analysis of a Steel Plate

100 - Surface Heating Analysis of a Steel Plate

High-frequency induction heating is one heating method used when heat treating the surface of a steel plate. With induction heating, the heating depth can be adjusted because it is possible to localize heating by modifying the coil's geometry and electrical power. The coil geometry, heating conditions, etc.

Module:FQ,HT | 2013-10-25




106 - Iron Loss Analysis of a Brush Motor

106 - Iron Loss Analysis of a Brush Motor

Brush motors are used in many devices, particularly smaller-sized ones. With demands for energy-saving in recent years, higher efficiency is desired not only in high performance and large-scale motors used in HEVs and large appliances, but also in small-scale brush motors. To respond to these demands,...

Module:DP,LS | 2013-06-25




91 - Iron Loss Analysis of an IPM Motor Including the Effects of the Press Fitting Stress

91 - Iron Loss Analysis of an IPM Motor Including the Effects of the Press Fitting Stress

One of the demands for IPM motors is higher efficiency over a wide range of rotation speeds in combination with motor drives, as reluctance torque can be used in addition to magnet torque. Iron loss makes up a particularly large proportion of total loss in the high rotation region, and how to make this smaller is a major design...

Module:DP, DS, LS | 2013-10-25




90 - Analysis of the Effect of PWM on the Iron Loss of an IPM Motor

90 - Analysis of the Effect of PWM on the Iron Loss of an IPM Motor

Current vector controls are generally used in interior permanent magnet synchronous motors (hereinafter referred to as IPMs), and among them PWM inverters are widely utilized to create a command current. It is vital to get a good understanding of iron losses in order to raise the efficiency of an IPM motor.

Module:DP, LS | 2012-04-25




87 - Iron Loss Analysis of an IPM Motor Including the Effect of Shrink Fitting

87 - Iron Loss Analysis of an IPM Motor Including the Effect of Shrink Fitting

Magnetic steel sheet is used for the cores of drive motors for HEVs and EVs. This is to make them more compact, lighter, and more efficient. The main point for improving efficiency in an IPM motor's high rotation speed region is how to reduce iron loss. However, shrink fitting is used in order to strengthen...

Module:DP,DS,LS | 2013-02-25




78 - Loss Analysis of a Sheet Coil Transformer

78 - Loss Analysis of a Sheet Coil Transformer

Power transformers need to be able to operate over the long term, so they are always required to control running costs from losses. Iron loss is one of the main losses in a transformer, and it can lead to temperature increases and efficiency decreases because it consumes electric power as heat in a magnetic material.

Module:FQ,LS | 2013-12-17




75 - Iron Loss Analysis of a Reactor

75 - Iron Loss Analysis of a Reactor

Reactors are installed on the input or output side of inverter circuits. Because they are required for long-term operation, the ability to control running costs from losses is an important challenge for their design. Iron loss is one of the major types of losses in a reactor.

Module:FQ,LS | 2013-12-17




69 - Iron Loss Analysis of an IPM Motor

69 - Iron Loss Analysis of an IPM Motor

Demand for higher efficiency and smaller size in motors has grown from the need to accommodate devices that incorporate miniaturization and energy efficiency in their designs. In order to meet this demand, motors have to improve their output density and reduce their losses. One type of loss commonly found in motors...

Module:DP,LS | 2013-10-25




67 - Analysis of AC Loss in a Superconductor

67 - Analysis of AC Loss in a Superconductor

When superconductors are in the superconducting state, in which temperature, magnetic field and current become lower than a critical value, its electrical resistance becomes zero. Although superconducting wire rod requires a cooling system to maintain a low-temperature state, having features such...

Module:TR | 2010-08-31




59 - Iron Loss Analysis of an IPM Motor Accounting for a PWM -Direct Link-

59 - Iron Loss Analysis of an IPM Motor Accounting for a PWM -Direct Link-

Vector controls using a PWM (Pulse Width Modulation) control are commonly included in the drive circuits of high efficiency motors. A PWM control makes it possible to adjust the phase or amplitude of a current according to load and rotation speed, so they can achieve high efficiency in a wide operation range.

Module:DP, LS | 2015-12-25




58 - Efficiency Analysis of an IPM Motor

58 - Efficiency Analysis of an IPM Motor

An IPM motor's features are in its rotor geometry, where its magnets are embedded. When the stator's rotating magnetic field is applied in a direction that runs perpendicular to the rotor magnets (the q-axis) the motor operates like a normal SPM motor. When the current phase is displaced and...

Module:DP, LS | 2013-10-25




31 - Iron Loss Analysis of an SPM Motor Including the Effect of Press-fitting Stress

31 - Iron Loss Analysis of an SPM Motor Including the Effect of Press-fitting Stress

The laminated structure of a core in a SPM motor can be sustained using press-fitting or shrink fitting. The press-fitting stress needs to be accounted for in the iron loss evaluation because the stress caused by press-fitting is known to increase the iron losses when a magnetic steel sheet is used for the core of the motor.

Module:DP,DS,LS | 2013-10-25




29 - Iron Loss Analysis of an SPM Motor with Overhanging Magnet

29 - Iron Loss Analysis of an SPM Motor with Overhanging Magnet

There are times when permanent magnet motors are designed with a magnet made with overhang, in other words made longer than the stator's stack length, in order to strengthen the magnetic field that it creates. A space is necessary in the stator core to supply the coil ends,...

Module:LS,TR | 2012-11-30




21 - Iron Loss Analysis of an SPM Motor Including the Effect of Shrink Fitting

21 - Iron Loss Analysis of an SPM Motor Including the Effect of Shrink Fitting

A magnetic steel sheet is used for the iron core in a motor. A frame is shrunk into a stator core in order to sustain the laminated structure and to improve the strong joint between the frames. It is know that a compressive stress is generated during the shrinking process which increases the iron loss process.

Module:DP,DS,LS | 2013-10-25