Development trend of the permanent magnet synchronous motor for railway traction

Matsuoka, Koichi

doi:10.1002/tee.20121

Cited by 20 publications

(8 citation statements)

References 7 publications

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“…S a result of recent developments in power electronics technology, permanent magnet synchronous rotating machines are often employed in applications requiring high power [1]. They are characterized by a very high efficiency of 95-97 % and high power density.…”

Section: Introductionmentioning

confidence: 99%

Pulse Field Magnetization of GdBCO Without Rapid Decrease in Magnetic Flux Density

Ida,

Imamichi,

Tsuchiya

et al. 2024

IEEE Trans. Appl. Supercond.

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Pulse field magnetization (PFM) method for hightemperature superconducting (HTS) bulks is attractive for promoting the use of HTS technology in various applications. Waveform control pulse field magnetization (WCPM) method is new techniques which has shown promising results so far in trapping strong magnetic fields by a single pulsed magnetic field. The cause of most of the magnetic field penetrating in the bulk by the application of a pulsed magnetic field not to be trapped is thought to be the local heat generated by the steep flux motion caused by the increase and decrease of that pulsed magnetic field. In this presentation, we show the results of magnetization under controlled conditions so that the magnetic flux that once entered the HTS bulk does not abruptly decrease. The penetration flux density measured on the surface of the GdBCO bulk was used as input to control the negative feedback as in previous studies. The bulk was placed between two vortex-type coils that replicated the internal structure of our previously developed axial-gap superconducting rotating2. At 40 K, by generating a pulsed magnetic field by negative-feedback-WCPM (NFB-WCPM) with a slight decrease in flux density, we applied almost constant magnitude magnetic flux density to the bulk sample for more than 1 s, and obtained a flux density nearly three times higher than the maximum flux density obtained with conventional PFM. NFB-WCPM worked effectively to obtain high trapped flux density even at 40 K. The bulk sample successfully trapped a flux density of nearly 4 T for less than two seconds by a single NFB-WCPM by adjusting the control conditions.

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Section: Introductionmentioning

confidence: 99%

Pulse Field Magnetization of GdBCO Without Rapid Decrease in Magnetic Flux Density

Ida,

Imamichi,

Tsuchiya

et al. 2024

IEEE Trans. Appl. Supercond.

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“…PMSMs have many advantages in comparison to induction motors. They are more efficient-95-97% compared to 90-92% in typical induction motors-lighter, and smaller [5]. Furthermore, they generally have larger torques, higher rotation speeds, higher power densities, and quicker responses.…”

Section: Introductionmentioning

confidence: 99%

Predefined-Time Control of Full-Scale 4D Model of Permanent-Magnet Synchronous Motor with Deterministic Disturbances and Stochastic Noises

Cruz

Basin

2021

Actuators

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This paper presents a predefined-time convergent robust control algorithm that allows the control designer to set the convergence time in advance, independently of initial conditions, deterministic disturbances, and stochastic noises. The control law is consequently designed and verified by simulations for a full-scale 4-degrees-of-freedom (4D) permanent-magnet synchronous motor (PMSM) system in cases of a disturbance-free system with completely measurable states, a disturbance-free system with incompletely measurable states, a system with incompletely measurable states in the presence of deterministic disturbances, and a system with incompletely measurable states in the presence of both deterministic disturbances and stochastic noises. Numerical simulations are provided for the full-scale 4D PMSM system in order to validate the obtained theoretical results in each of the considered cases. To the best of our knowledge, this is the first attempt to design a predefined-time convergent control law for multi-dimensional systems with incompletely measurable states in the presence of both deterministic disturbances and stochastic noises.

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“…Gradually, environmentally-friendly electric cars, based on permanent magnet synchronous machines (PMSM), have proceeded to substitute vehicle engines which considered as a source of such pollution [1][2][3]. PMSMs have an essential role in the wide range of green industrial applications, due to their promising features such as low consumption of fuel, significant reduction in carbon dioxide (CO2) emissions, more reliable, better power-to-size ratio and more rapid speed reaction [4][5][6][7][8][9]. However, some drawbacks are also companying the use of PMSM such as it cannot be directly derived from the alternating voltage source.…”

Section: Introductionmentioning

confidence: 99%

High-resolution rotor-position detection for green vehicle drives at halt condition with statistical view

et al. 2021

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Considerations around environmental pollution and green energy usage have led to environmentally-friendly machines being used in many industrial applications. Permanent magnet (PM) machines are the best solution to substitute the pollutant diesel-powered machines. In such machines, rotor position detection is crucial for safe startup operating. Meanwhile, encoderless controllers have become more reliable, over the years, in supporting the operation of PM machines. The key point, presented by this paper, is to introduce an improved positioning model to detect the rotor-position of interior permanent magnet synchronous machine at halt condition. To verify this objective, only two short duration pulses were injected into the stator windings. Then, the corresponding terminal voltage and current responses were measured and employed to create two memory address lines. Thereby, the memory cells, which contain the rotor position information, could be accessed. This detection model makes a significant improvement in rotor positioning detection of high resolution (1 degree) which represents lower value than most verified results in literature. The model was simulated and tested in a MATLAB/Simulink environment and shows an approximate accuracy 95%. Additionally, the statistical analysis was also employed to support the work outcomes.

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Development trend of the permanent magnet synchronous motor for railway traction

Cited by 20 publications

References 7 publications

Pulse Field Magnetization of GdBCO Without Rapid Decrease in Magnetic Flux Density

Pulse Field Magnetization of GdBCO Without Rapid Decrease in Magnetic Flux Density

Predefined-Time Control of Full-Scale 4D Model of Permanent-Magnet Synchronous Motor with Deterministic Disturbances and Stochastic Noises

High-resolution rotor-position detection for green vehicle drives at halt condition with statistical view

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