Application Catalog


2017-02-27

IPM motor



205 - Analysis of IPM Motor Characteristics using Thermal Equivalent Circuit

205 - Analysis of IPM Motor Characteristics using Thermal Equivalent Circuit

To realize high output and efficiency in a motor, it will be important to understand temperature increase in each part of the motor. This is because coil resistance and magnet characteristics change with increase in temperature, and this may cause a large impact in the motor characteristics.

Module: DP | 2016-06-27




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




194 - Analysis of High-Speed Rotation Motors Accounting for Eddy Current

194 - Analysis of High-Speed Rotation Motors Accounting for Eddy Current Updated

PM synchronous motors are used in HEV drives, air conditioner compressors, and various other industries. Especially in case of PM synchronous motors for HEV drives, high-speed rotation is advancing faster than ever to achieve a small size with high output density.

Module:DP, LS | 2017-02-27




188 - Thermal Demagnetization Analysis of IPM Motors Accounting for Coercive Force Distribution of Magnets

188 - Thermal Demagnetization Analysis of IPM Motors Accounting for Coercive Force Distribution of Magnets

The purpose of this Application Note is to help JMAG users understand the steps and settings used in a JMAG analysis. It is intended to help those who are working with a new analysis target better understand the analysis steps and the setting contents.

Module:DP | 2014-05-30




173 - Basic Characteristic Analysis of an IPM Motor

173 - Basic Characteristic Analysis of an IPM Motor Updated

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.

Module:DP, LS | 2017-02-27




165 - Creating an Efficiency Map for an IPM Motor

165 - Creating an Efficiency Map for an IPM Motor

IPM motors use rare earth sintered permanent magnets because they have strong magnetic energy. They can use the magnetic torque from the magnet's field and the rotating magnetic field in addition to the reluctance torque that originates from the difference in inductance between the d-axis and q-axis,...

Module:DP,LS,RT | 2012-04-25




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




156 - Segregation Analysis of Torque Components for an IPM Motor

156 - Segregation Analysis of Torque Components for an IPM Motor

IPM motors are often used as high performance motors because they are highly efficient and their structure makes it possible to achieve a wide range of operation. They are able to achieve high efficiency because they obtain maximum total torque by using their controls to adjust their magnet and reluctance torques.

Module:DP | 2012-04-25




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




131 - Stray Capacitance Analysis of a Motor

131 - Stray Capacitance Analysis of a Motor

Motors driven by PWM inverters are widely used in household appliances. It is known that when a PWM inverter is used for drive, common mode current flows and axial voltage is produced in the motor's bearings. Electric corrosion is caused in the bearings by this axial voltage, which can reduce the motor's...

Module:EL | 2013-10-25




122 - Inductance Analysis of an IPM Motor - d/q-axis Inductance Obtained by Actual Measurement -

122 - Inductance Analysis of an IPM Motor - d/q-axis Inductance Obtained by Actual Measurement -

Evaluating the inductance characteristics along the d/q-axis is important when analyzing the saliency of a rotor in an IPM motor. With actual measurements, it is possible to calculate the inductance in the d-axis and q-axis by measuring the no-load magnetic flux or the voltage and current with a three-phase current flowing...

Module:DP | 2013-10-25




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




69 - Iron Loss Analysis of an IPM Motor

69 - Iron Loss Analysis of an IPM Motor Updated

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 | 2017-02-27




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 Updated

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 | 2017-02-27




55 - Integrated Magnetization Analysis of an IPM Motor

55 - Integrated Magnetization Analysis of an IPM Motor

Interior permanent magnet (IPM) motors often use strong rare earth magnets. They have poor workability, however, because the magnets are inserted into the rotor's small gaps during the assembly process. After the magnets have been inserted the rotor generates a strong magnetic field, which means...

Module:DP, ST | 2013-10-25




37 - Vector Control Analysis of an IPM Motor  Using Control Simulator and the JMAG-RT

37 - Vector Control Analysis of an IPM Motor Using Control Simulator and the JMAG-RT

Traditionally, the design of a motor's controls and the design of the motor itself were often performed independently because coordinated designs were difficult to carry out. Motor control designs have been getting more advanced, however, so there has been an increasing demand for simulations...

Module:DP,RT | 2015-04-24




23 - Eccentricity Analysis of an IPM Motor

23 - Eccentricity Analysis of an IPM Motor

Rotor eccentricity is one cause of vibration and noise in motors. It is well known that motor torque is produced by electromagnetic attraction and repulsion between the stator and rotor, but not much attention is paid to the fact that electromagnetic attraction acts in the radial direction between the rotor and stator.

Module:DP | 2015-12-25




22 - Analysis of the Eddy Current in the Magnet of an IPM Motor

22 - Analysis of the Eddy Current in the Magnet of an IPM Motor

More and more permanent magnet motors are starting to use rare earth magnets, which have a high energy product, in order to achieve higher output density. Neodymium rare earth magnets contain a great deal of iron so they have a high electric conductivity, but when a varying magnetic field is applied...

Module:TR | 2012-11-30




19 - Analysis of the Centrifugal Force in an IPM motor

19 - Analysis of the Centrifugal Force in an IPM motor

While motors have started being combined with motor drives and used in a wide range of velocities, further changes toward high output and high efficiency are being demanded of them. While higher speed revolution has been given as a means of attaining higher output, the centrifugal force becomes larger...

Module:DS | 2014-05-30




18 - Thermal Analysis of an IPM Motor

18 - Thermal Analysis of an IPM Motor

Exactly how to resolve the problem of rising temperatures is a critical issue when trying to achieve an improvement in a motor's efficiency and output. In order to solve this problem it is important to investigate a magnetic design that reduces the losses themselves because they are a source of heat,...

Module:HT, LS, TR | 2013-10-25




17 - Inductance Analysis of an IPM Motor

17 - Inductance Analysis of an IPM Motor

An IPM motor can use both magnet torque and reluctance torque, so by appropriately choosing the current phase it is possible to improve efficiency over a broad spectrum of drive range. It is a motor type that is often used in equipment with a wide operational range, from air compressors in air conditioners to motors that power vehicles.

Module:DP | 2013-06-25