A new type of power supply for excitation mechanism of motor in electrical appliance

Wu, Feng; Huang, Xueliang; Tan, Linlin

doi:10.1109/wow.2017.7959381

Cited by 3 publications

(5 citation statements)

References 12 publications

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“…E.B layout [12] : Heliostat feature length is 𝐷 、azimuth spacing of the first ring heliostat in each region is 𝐴 , ,Orientation of each region is 𝐴 ,Number of heliostats in each environment is 𝑁 , .The calculation is as follows:…”

Section: Cstmm 2023mentioning

confidence: 99%

Research on Optimization Design Based on Heliostat Field

Zhang

2024

HSET

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This study aims to deeply explore the mathematical modeling and performance optimization of solar heliostat fields, in order to improve their energy output efficiency. The solar heliostat field is an innovative solar heating system that focuses solar radiation on the absorption tower through a reflector, thereby generating high-temperature heat energy. This article mainly discusses the performance analysis and parameter optimization of the heliostat field to achieve optimal performance while meeting the rated power requirements. A simulated solar model was established using a three-dimensional Cartesian coordinate system, taking into account the effects of solar altitude angle and direct normal irradiance (DNI). The model in this paper comprehensively considers the effects of shadow occlusion loss, cosine efficiency, atmospheric transmittance, collector truncation efficiency, and mirror reflectance on the mirror field. The specific values of each parameter were calculated using model algorithms such as the HFLCAL model, To provide a basis for accurate performance analysis and solve the problem of parameter optimization, this article defines an objective function aimed at improving the energy utilization efficiency of the heliostat field by adjusting the parameters of the reflector, in order to achieve optimal performance. The above parameters are determined by establishing a genetic algorithm to define constants and initial parameters, and initializing the overall layout of the heliostat field to calculate the optical efficiency of the heliostat. In each iteration, the optimal heliostat field layout can be recorded. The final optimal solution includes parameters such as the position coordinates of the absorption tower, heliostat size, installation height, number of heliostats, and heliostat position.

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Section: Cstmm 2023mentioning

confidence: 99%

Research on Optimization Design Based on Heliostat Field

Zhang

2024

HSET

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“…The resonance frequency may change and bifurcate depending on the change in circuit parameters. The resonance frequencies are found by Equation (5).…”

Section: Armature Windingsmentioning

confidence: 99%

“…WPT system is designed for an in-wheel outer rotor switched reluctance motor drive using receivers with different resonance frequencies [4]. A brushless excitation mechanism is designed with WPT based on MRC [5]. A WPT system was designed that determines the rotor's position and excitates the rotor wirelessly.…”

Section: Introductionmentioning

confidence: 99%

Contactless Field Excitation System of Wound-Rotor Synchronous Motor

2023

International Conference on Innovative Academic Studies

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Transferring energy to the rotating parts of electrical machines through brush or slip ring has always been a problem due to maintenance, friction loss and arcing. All of these problems are eliminated with contactless energy transfer systems. In this study, a magnetic resonance coupling (MRC) based wireless power transfer (WPT) system was used in the excitation of a synchronous motor. Single-layer circular planar spiral coils were used in the transmitting and receiving coil design, thus achieving high coupling factor and low thickness. The WPT system successfully transfers energy in low air gaps between the rotating and stationary parts of the electrical machine. Simulations of the WPT model were made with MATLAB and Maxwell 3D. According to the simulation results, the system can operate with over 98% efficiency in a wide frequency band. The system was operated at 100 khz resonance frequency and 50 W power was transferred to the output with 98.22% efficiency. This design is not affected by the rotation of the rotor and does not create an imbalance in the rotor, since the receiver and transmitter coils are positioned parallel and symmetrically. This WPT system offers a reliable, low-cost and low-complexity solution to excite a synchronous motor.

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“…Recently, this innovative technique has been applied to WFSM to reduce the overall size and weight [19]. Reference [20] has designed different types of resonators for different excitation demands and calculated the spatial distribution of the excitation magnetic field. Unfortunately, there are no experiment results.…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of previous research [20], the authors of this article continue to investigate electro-magnetic coupling resonant technique to feed excitation power into the field winding and verify the analytical analysis and design results by some experiments. The simulation and experimental results of brushless WFSM and conventional brush WFSM are given and compared with each other.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Brushless Wound Field Synchronous Machine With Electro-Magnetic Coupling Resonators

Tan

2019

IEEE Access

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The increasing price of rare earth permanent magnet has refocused the attentions to substitute Permanent Magnet Synchronous Machine (PMSM) with Wound Field Synchronous Machine (WFSM), which needs an excitation device to deliver current to the field winding. This paper presents one solution transferring the excitation power into the winding on the rotor of WFSM via electromagnetic coupling resonance. Analysis, design, and prototype construction of the system are presented. Experiments demonstrate the system can transfer 200W to the field winding of a 2kW WFSM and the overall excitation device efficiency can reach 85%. The proposed technique has unique advantages over other wireless power transfer excitation technologies. INDEX TERMS Wound field synchronous machine, brushless excitation, wireless power transfer, electromagnetic coupling resonance.

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A new type of power supply for excitation mechanism of motor in electrical appliance

Cited by 3 publications

References 12 publications

Research on Optimization Design Based on Heliostat Field

Research on Optimization Design Based on Heliostat Field

Contactless Field Excitation System of Wound-Rotor Synchronous Motor

Design and Analysis of Brushless Wound Field Synchronous Machine With Electro-Magnetic Coupling Resonators

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