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29 results on '"Ting, Naim Suleyman"'

2. Design, analysis, and implementation of DC‐DC boost converter with new active snubber cell.

Author

Gecmez, Hilal Sebnem, Ting, Naim Suleyman, and Sahin, Yakup

Subjects
*DC-to-DC converters, *ZERO current switching, *ELECTRIC current rectifiers, *ZERO voltage switching, *CONVERTERS (Electronics), *SEMICONDUCTOR devices, *PULSE width modulation
Abstract

In this paper, a new active snubber cell for DC‐DC boost converters is introduced for the purpose of soft switching. The introduced snubber cell ensures lossless turning‐on by zero‐voltage transition (ZVT) and turning‐off by zero‐voltage switching (ZVS) of the main switch. Besides, it enables turning‐on by ZVS and turning‐off by zero current switching (ZCS) of the main diode. None of the semiconductor power devices are subjected to extra voltage stress, and all of them operate by soft switching (SS). The converter can successfully maintain the SS even under light loads. Furthermore, the proposed converter structure is advantageous in terms of simplicity and low cost. The operating modes and theoretical analysis of the introduced converter are presented and it is validated using a prototype with a 500 W output power and at the 100 kHz switching frequency. Owing to the proposed active snubber cell, the converter efficiency is achieved as 97.2%. [ABSTRACT FROM AUTHOR]

Published
2024
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14. Design and Application of Smart and Electrical Wheelchair and Charging Station for the Disabled Citizen.

Author

Ting, Naim Suleyman, Ozel, Huseyin, Celik, Lokman, Ganidagli, Enes, and Akkamis, Hilal

Subjects
*ENGINEERING, *SCIENCE, *TECHNOLOGICAL innovations, *SOLAR energy, *ELECTRIC vehicle charging stations
Abstract

In this paper, the design and application of smart wheelchair and charging station for disabled citizen is realized. The first stage of the paper is to make the wheelchair used by our disabled citizens able to access smart home technology via the vehicle via touch screen. The ability of citizens with disabilities to call with direct access via touch screen is also in the wheelchair designed. Thanks to the touch screen placed on the vehicle, disabled citizens are provided with the control of smart automation to control many objects such as curtains and doors in the home. In the second part of the paper, a solar powered charging station is designed and installed in order to charge battery powered wheelchairs. In the charging station made a special card reader system and has the charger to charge the card with disabilities to actively and means are provided. [ABSTRACT FROM AUTHOR]

Published
2020
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20. A Single Phase ZVT-ZCT Power Factor Correction Boost Converter

Author

Sahin, Yakup, Ting, Naim Suleyman, and Aksoy, Ismail

Abstract

In this paper, a single phase soft switched Zero Voltage Transition and Zero Current Transition (ZVT-ZCT) Power Factor Correction (PFC) boost converter is proposed. In the proposed PFC converter, the main switch turns on with ZVT and turns off with ZCT without any additional voltage or current stresses. Auxiliary switch turns on and off with zero current switching (ZCS). Also, the main diode turns on with zero voltage switching (ZVS) and turns off with ZCS. The proposed converter has features like low cost, simple control and structure. The output current and voltage are controlled by the proposed PFC converter in wide line and load range. The theoretical analysis of converter is clarified and the operating steps are given in detail. The simulation results of converter are obtained for 500 W and 100 kHz. It is observed that the semiconductor devices operate with soft switching (SS) perfectly. So, the switching power losses are minimum. Also, the proposed converter has 0.99 power factor with sinusoidal current shape.

Published
2016
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