Design, Implementation and Characterisation of a Contactless Power Transfer System for Rotating Applications

Potter, Ben; Shirsavar, S.A.

doi:10.1109/iecon.2006.347406

Cited by 24 publications

(7 citation statements)

References 15 publications

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“…The pot core type rotating transformer is suitable to the transfonner for the wireless power supply from the state side to the rotating side [4]- [5]. An illustration of the geometric parameters is shown in Fig.…”

Section: Simplified Design Of Transformermentioning

confidence: 99%

“…Furthermore, we change the tum number in each frequency model and we adjust the inductance to have a desire current value. The method of deciding coil area is shown in equation (3), and the maximum temperatureT,n e x is calculated by equation (4). Where S is the coil area of cross section, () IS the current density, 6,p a a is the space factor.…”

Section: B Theoretical Designmentioning

confidence: 99%

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High power transformer and motor drive system design for an electric helicopter

Kawakami

Akatsu

2013

2013 IEEE ECCE Asia Downunder

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This paper discusses a high frequency high power transformer to rotate an armature winding and the new motor drive system. The rotating transformer supplies the power from the movable part to the unmovable part by the wireless power transmission technique. The rotating transformer has an advantage of the maintenance-free as usual slip ring system has. Thus, we calculate its volume and weight from the control conditions and the theoretical formula. Moreover, we compare the weight and the size of the slip ring and the rotating transformer system. After that, we choose the best rotating transformer model and show the characteristics against to the variable load. Through the rotating transformer, single-phase power converts a three-phase power, the rectifier circuit independently drive the SR motor by a high frequency control.

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Section: Simplified Design Of Transformermentioning

confidence: 99%

Section: B Theoretical Designmentioning

confidence: 99%

High power transformer and motor drive system design for an electric helicopter

Kawakami

Akatsu

2013

2013 IEEE ECCE Asia Downunder

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“…Myunghyo Ryu 15 analyzed a large airgap contactless transformer, which could move along a straight line and built a 30 kW experimental prototype to test the contactless transformer module. Some contactless power transfer systems for rotating application 16 have also been reported, but they have low transfer efficiency when output low power.…”

Section: Introductionmentioning

confidence: 99%

Property study of power transmission system for rotary ultrasonic application

Chen

Cheng

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rotary ultrasonic applications are being widely used in machining hard and brittle materials. Conventional conducting ring used as power transmission part limits the ultrasonic applications from rotating at high speed. A high efficiency power transmission system is defined in this article to solve this problem. It consists of a contactless transformer, which was made up of two hollow copper coils, ultrasonic power supply and compensation capacitors. Four compensation methods are proposed and their properties are analyzed through simulations and experiments. The simulations show that S-S compensation is superior to others on the performance of transient and steady circuit parameters and the max transmit efficiency can reach about 97.2% when appropriate compensation method and capacitance are used. Rotary experiments show that speed has little effect on the property of the system.

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“…Again, because of the air gap between primary and secondary windings results in high primary and secondary leakage inductances. Moreover, eddy currents, caused by fringing flux, can be formed in the magnetic material near the gap which could cause losses and local radiation [4]. Therefore, based on CSS features and the mentioned design restrains, having a reliable prediction and an accurate model of the contactless transformer used in such systems is essential for design prejudgments.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Parameters Identification of Through-Hole Type Wind Turbine Contactless Sliprings

Abdolkhani¹,

Hu²,

Nair³

2012

ENG

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This paper presents a modelling and parameter identification of through-hole type contactless slipring systems for transferring electrical power for wind turbine pitch control. An equivalent circuit model has been developed from the physical structure and dimensions of the contactless slipring using the duality rules, which is very different form traditional transformer. The circuit inductances are determined by the derived expressions from the system reluctances. In particular, the equivalent resistance representing the core loss of the slipring has been determined using phasor diagram of exciting current. FEM (Finite Element Method) models and practical prototypes are developed for testing and verifycations. Both simulation and experimental results have shown that the developed model gives truthful values for numerical calculations in order to obtain the equivalent electric circuit. The effect of fringing flux around the air gap on mutual inductance and the ways of correcting its effects are analysed. The obtained values have shown that the developed models and derived equations are with high accuracy as compared to the FEM simulation and experimental results

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Design, Implementation and Characterisation of a Contactless Power Transfer System for Rotating Applications

Cited by 24 publications

References 15 publications

High power transformer and motor drive system design for an electric helicopter

High power transformer and motor drive system design for an electric helicopter

Property study of power transmission system for rotary ultrasonic application

Modelling and Parameters Identification of Through-Hole Type Wind Turbine Contactless Sliprings

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