Performance of Inductive Wireless Power Transfer Between Using Pure Sine Wave and Square Wave Inverters

Namin, Anon; Chaidee, Ekkachai; Sriprom, Thanet; Bencha, Putthipong

doi:10.1109/itec-ap.2018.8433306

Cited by 13 publications

(13 citation statements)

References 24 publications

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“…It is easier to generate square-wave signal than pure-sine-wave one at high operation frequency [34]. For IPT systems, square-wave input voltage gives load voltage and current which are insignificantly different from using pure-sine wave [35]. Oscilloscope RTO 1004 is used to capture the waveform of the output voltages.…”

Section: Resultsmentioning

confidence: 99%

Load-Independent Voltage Control for Multiple-Receiver Inductive Power Transfer Systems

Duong

Okada

2019

IEEE Access

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This paper proposes a multiple-receiver inductive power transfer platform which is capable of controlling the load voltages to satisfy individually rated values and stabilizing the load voltages against the load variations. In the proposed charging platform, multiple transmitting resonators are employed to support a voltage-driven source resonator in manipulating the energy flows toward individual receivers. This structure also helps the voltage source induce constant currents into the transmitting resonators, and therefore, is able to deliver load-independent voltages to the loads. As a result, when the loads are sufficiently large, the load voltage ratio is approximately determined only by the mutual couplings of the coils. This means that the voltage control can be performed by effortlessly adjusting the arrangement of the transmitting resonators inside the charging platform. Electromagnetic simulation and experiment results verify voltage stability and controllability of the proposed system. Although typical constant voltage designs inevitably suffer from efficiency degradation, our scheme can achieve an efficiency of up to 56%, which is acceptable and sufficient for many practical applications.INDEX TERMS Inductive power transfer, load-independent, multiple receivers, voltage control.

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Section: Resultsmentioning

confidence: 99%

Load-Independent Voltage Control for Multiple-Receiver Inductive Power Transfer Systems

Duong

Okada

2019

IEEE Access

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“…The H-bridge square wave inverter, scaled up from previous work [5], is used for the 10 kW IPT. The square wave inverter injects the sinusoidal current waveform into the IPT [5] through the resonance conditions controlled by 𝐶 1 and 𝐶 2 , as shown in Eq. ( 5).…”

Section: High-frequency (Hf) Square Wave Invertermentioning

confidence: 99%

“…Following Nikola Tesla's WPT invention, more than 14,000 papers have been published on "wireless power transfer" [4], with over 75% of these in the last five years [5]. There are many wireless power transfer applications in portable electric apparatus such as the solar tricycle, bus, car, vessel, TV, and smartphone [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic cores that increase permeability and reduce leakage flux for the IPT are made from air core [5][6][7], ferrite core [2,3], magnetic nanoparticle core [21], flexible magnetic core [22], and magnetic concrete core [23]. The IPT core shapes reported in existing publications were made from the ferrite bases of plate, bar, and tile but the concept of blocked construction in commercial magnetic ferrite application has never previously been reported.…”

Section: Introductionmentioning

confidence: 99%

“…The first wireless power transfer charger in Thailand was developed in 2014 for the 14 W e-scooter [41]. Subsequently, WPT chargers developed by Thais include the 1,240 W wireless EV [2], the 12 W WPT [5], the 10 W for solar tricycles [6], 30 W for TV [7], 230 W for motorcycles [42], the 324 W for e-bikes [43], the 82 W distance-frequency WPT [44], the 110 W phase shift WPT [45], the 289 W multi-transmitter WPT [46], the 1,000 W primary and secondary controlled WPT [47], the automated efficiency 540 W [48], and the 200 W kitchen appliance [49]. However, static WPT of more than 1,240 W is required for EV charging stations.…”

Section: Introductionmentioning

confidence: 99%

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10 kW Inductive Wireless Power Transfer Prototype for EV Charging in Thailand

et al. 2022

Self Cite

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The electric vehicle (EV) market is rising despite the COVID-19 pandemic in Thailand and the rest of the world. The Energy Policy and Planning Office, Ministry of Energy, is supporting the development of EV charging stations in Thailand. However, recent research published by Thais on the subject does not involve more than 1.24 kW wireless power transfer (WPT), whereas commercial EVs need at least 3.5 kW charging facilities. This study aims to develop a 10 kW WPT for EV charging in Thailand. The experimental procedure firstly required the design of block ferrite EE55 cores. Secondly, the transmitter and receiver coils were constructed from homemade Litz wire. Thirdly, the prototype magnetic parameters were measured and simulated. A 10 kW high-frequency inverter was then built and tested. The 10 kW prototype IPT system was subsequently simulated, constructed, and characterized. The results revealed that when the prototype IPT system was applied to the resistive tungsten halogen load during the first stage of the research, at 369.4 V DC input voltage and 32.33 A DC input current, the DC output voltage, and currents were 362.4 V and 29.67 A, respectively, while the maximum DC output power and the dc-to-dc efficiency equated to 10.75 kW and 90.00%, respectively.

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A Review on Contactless Power Transfer Using Matrix Converter Topology for Battery Charging Application

Zainol

Dahalan

et al. 2022

Advanced Structured Materials

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Performance of Inductive Wireless Power Transfer Between Using Pure Sine Wave and Square Wave Inverters

Cited by 13 publications

References 24 publications

Load-Independent Voltage Control for Multiple-Receiver Inductive Power Transfer Systems

Load-Independent Voltage Control for Multiple-Receiver Inductive Power Transfer Systems

10 kW Inductive Wireless Power Transfer Prototype for EV Charging in Thailand

A Review on Contactless Power Transfer Using Matrix Converter Topology for Battery Charging Application

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