Magnetic Field
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[JAC299] Inverter Changeover Control for an Open-end Winding Motor (Wound-Field Synchronous Motor)
This case study runs a circuit simulation of an open-end winding motor drive system that switches from using a single inverter to dual inverters during operation in order to mitig…
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[JAC290] Design Exploration of IPM Motors, Including Evaluating Part Temperature, Stress, and the Presence of Electric Breakdown
In this example, the part temperature and stress are evaluated at the same time for the motor design plan, and a design plan that meets the requirements is explored.
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[JAC038] Starting Performance Analysis of a Single Phase Induction Motor
The purpose of this Application Note is to introduce an example of a single phase induction motor that uses a capacitor to set up an auxiliary winding and show its rotation speed …
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[JAC138] Vibration Analysis of an SR Motor
This Application Note presents an example of how to obtain the electromagnetic force generated in the stator core of an SR motor and evaluate the sound pressure by linking it to t…
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[JAC186] Gear Induction Hardening Analysis Using Two Frequencies
In this material, the validity of coil geometry used for quenching is evaluated by heating the gear top and bottom at high and low frequencies, respectively, to confirm uniform te…
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[JAC296] Torque Characteristic Analysis of an IPM Motor Accounting for Temperature Distribution and Changes in Temperature
In this example, magnetic field and thermal coupled analysis is run, and changes in torque due to part temperatures and magnet demagnetization are checked.
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[JAC297] Geometry Optimization of a Wound-field Synchronous Motor Including Efficiency Map, Part Temperature, and Stress Evaluations
This case study runs a parametric optimization of a main automotive engine to maximize efficiency and torque while minimizing the temperature and stress as constraint conditions.
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[L-MB-31] Monitoring Internal Condition of the Motor Using JMAG-RT Model
Quietness and safety are required from a motor as equipment such as electric vehicles and robots that utilize motors have been in great demand. For this reason, motor control is r…
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[L-SE-59] Detailed Modeling for Harmonic Loss Analysis
In IPM motors driven by PWM inverters, eddy current losses occur due to carrier higher harmonics. For higher efficiency, it is important to evaluate higher harmonic loss at design…
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[L-MO-54] JMAG-Express Online
JMAG-Express Online is a Web service to support your motor design work anytime, anywhere.
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[L-TR-44] Winding Vibration Analysis of a Power Transformer
Winding vibration originating from a transformer is a vibration phenomenon that uses Lorentz force as the vibration force, which occurs when leakage flux from the winding acts on …
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[JAC139] Power Transmission Analysis Using Magnetic Resonance Phenomena
This Application Note presents how to confirm the power transmission efficiency and the magnetic flux density distribution.
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[JAC295] Inverter Changeover Control for an Open-end Winding Motor
This case study runs a circuit simulation of an open-end winding motor drive system that switches from using a single inverter to dual inverters during operation in order to mitig…
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[JAC207] Transfer Torque and Efficiency Analysis of Magnetic Gear
In this example, the transfer torque and transfer efficiency are obtained with magnetic field analysis for the flux modulated type magnetic gear using permanent magnets for the in…
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[JAC289] Efficiency Map Creation for Wound-Field Synchronous Motors
In this example, efficiency maps for a wound-field synchronous motor are created to check the combinations of currents that result in maximum efficiency. In addition, the loss bre…
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[W-OP-165] Solving Geometry Conflicts in GA Optimizations with Large Numbers of Geometric Parameters
Genetic Algorithm (GA) based optimization with finite element analysis is expected to become a solution for high performance motor designs which need to satisfy many strict requir…
