Voltage-induction synchronous electrostatic motor

Dadkhah, Mohammad; Hojjat, Yousef; Jeon, Jong Up; Ghodsi, Mojtaba; Modabberifar, Mehdi

doi:10.1007/s00170-014-6385-3

Cited by 9 publications

(13 citation statements)

References 12 publications

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“…Owing to the significant friction produced by the slip rings, its application to the low‐power machines causes problems. Thus, a structure is proposed in which the rotor electrodes are fed through the induction electrodes in stator and without direct contact [16]. Another proposed structure is a linear motor with skewing electrodes, which causes the motor to move more smoothly, increases the propulsion force and reduces the force ripple and noise [17].…”

Section: Introductionmentioning

confidence: 99%

“…In the dynamictransient modelling presented by [20] for a specific structure of the variable capacitance induction machines, the capacitance matrix coefficients are obtained by applying a numerical method. In references [16,21], modelling of a linear variable capacitance machine (VCM) machine is described considering the effects of capacitance imbalance, while the capacitance matrix is obtained both through numerical methods and the experimental measurements (EXP). Also, several simple and useful methods are introduced in [22][23][24] for measuring the self and mutual capacitances of the VCM machines experimentally.…”

Section: Introductionmentioning

confidence: 99%

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Conceptual method for the detailed analytical calculation of capacitance matrix elements in variable capacitance synchronous machines

Deylami

Darabi

2021

IET Electric Power Appl

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This article describes a detailed analytical method for obtaining the capacitance matrix elements in variable capacitance synchronous machines (VCSMs). The analytical modelling approach is performed by introducing a decentralized sinusoidal distribution of the stator/rotor electrodes and involves obtaining the capacitance matrix elements based on the electro motive force distribution in the air gap and calculating the induced electric charge in the stator/rotor electrode surfaces. The proposed analytical formulas are valid for both radial-field and axial-field VCSM structures. The analytical model is evaluated and well verified through analysing a multi-stack axial-field VCSM using 3D finite element simulation. Furthermore, a prototype of the VCSM is manufactured and tested to validate the results obtained from the proposed analytical model and finite element method simulations. Based on the results, the proposed model and analytical formulas are able to accurately estimate the capacitance matrix elements of the VCSMs. Ahmad Darabi is the co-author of this study. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Conceptual method for the detailed analytical calculation of capacitance matrix elements in variable capacitance synchronous machines

Deylami

Darabi

2021

IET Electric Power Appl

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“…To increase the propulsion force and reduces the force ripple and noise, a linear VCM motor with skewed electrodes is presented in Reference 11. In addition, to eliminate mechanical losses caused by the slip ring, the rotor can be fed by a separate group of electrodes, without direct contact 12 . Using the electrostatic suspension is an interesting way that is implemented in Reference 13 to eliminate the mechanical losses caused by bearings.…”

Section: Introductionmentioning

confidence: 99%

“…In the structure of VCSM machines, three categories of materials are generally used. Non‐conducting materials such as Fiberglass and Plexiglas 12 are used to make stator and rotor. Conductive materials such as Cooper and Nickle 14 are used to make the electrodes.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic‐transientmodeling and performance evaluation of a multilayervariable‐capacitanceenergy conversion system

Deylami

Darabi

2021

Int Trans Electr Energ Syst

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This paper proposes an analytical method for dynamic-transient modeling of a variable capacitance energy conversion system as a multi-layer synchronous machine. The dynamic-transient models are achieved based on the analytical formulas and are valid for all machine structures with flat electrode plates. In addition, the equivalent circuits and operational characteristics are obtained for both dynamic-transient and steady-state conditions. The analytical model is evaluated and well verified through both experimental test results and computer-aided numerical methods such as finite element analysis (FEA). The numerical 3D-FEA simulations are performed using Ansys Maxwell 3D software. Design and manufacturing of the experimental prototype are performed using printed circuit board (PCB) technology. The variable capacitance machines (VCMs) have a low weight and volume, and fast transient response.The results show that the electrical current level of the VCMs is very low which can be effective in reducing electrical losses. In addition, regarding the duality between VCMs and magnetic machines, this paper compares some of the features and behaviors of these two groups of energy conversion systems.

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Position estimation of synchronous electrostatic film motors under pulse-voltage operation by using driving currents

Guang-wei

Yamamoto

2021

Sensors and Actuators A: Physical

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Voltage-induction synchronous electrostatic motor

Cited by 9 publications

References 12 publications

Conceptual method for the detailed analytical calculation of capacitance matrix elements in variable capacitance synchronous machines

Conceptual method for the detailed analytical calculation of capacitance matrix elements in variable capacitance synchronous machines

Dynamic‐transientmodeling and performance evaluation of a multilayervariable‐capacitanceenergy conversion system

Position estimation of synchronous electrostatic film motors under pulse-voltage operation by using driving currents

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