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This paper presents an isolated DB LLC resonant converter with frequency adaptive phase-shift modulation control which overcomes the unity gain problem of conventional DB converter. The proposed control maintains the Zero Voltage Switching (ZVS) to all switches under all operating voltage and load variations. The control proposed for this circuit based on two control variables: switching frequency...
This work is focused upon power electronic motor-driven scooter with a new EDLC (Electric Double Layer Capacitor) on board charger. This electric scooter is eco-friendly and high performances. In addition, it is effective method suitable for global environmental issues and energy concerned problems. This paper mainly deals with an EDLC based-electric scooter and its unique super-rapid pulse charging...
This paper deals with attractive voltage-source single-ended sub-resonant high-frequency (HF) inverter as a simple wireless power transfer (WPT) based on unidirectional inductive power transfer (IPT) in addition to bidirectional HF converter as transmitter and receiver of WPT is developed for vehicle to home (V2H) smart energy management architecture. Firstly, the voltage source single-ended sub-resonant...
In recent years, the wireless EV chargers have been spotlighted as convenient, safe, and clean apparatus. In this paper, proposed has been a newly developed large-gap wireless power transfer EV charger which can communicate control signal to a power feeding unit from a power receiving unit without any additional communication equipment. The wireless power transfer (WPT) system with a single-ended...
This paper deals with a cost effective wireless EV battery charger which integrates the simplest quasi-resonant soft switching pulse modulated inverter with a newly developed SiC-MOSFET. In the first place, the operating principle of a wireless EV charger using a class-E single-ended inverter which is cost-effective for affordable price and simple is described. This type of wireless resonant EV charger...
In this study, we focused on an electric motorcycle system with onboard innovative charger using ultracapacitor (EDLC). The electric two-wheel scooter is an excellent performance and environmentally friendly. Moreover, it's just an effectual solution suitable for energy resource issues and the global environment. This paper discusses with the electric motorcycle using EDLC and an innovative pulse...
This paper deals with attractive voltage-source single-ended sub-resonant HF inverter as a simple wireless power transfer (WPT) based on unidirectional IPT in addition to Dual Active HF inverter and HF rectifier as transmitter and receiver of WPT is developed for bidirectional EV2H smart energy management architecture. Firstly, the voltage source single-ended sub-resonant HF inverter using a single...
In this paper, Lyapunov law based model predictive control scheme is proposed for the grid integration of 3L-neutral point clamped (NPC) inverter. Lyapunov law based cost function, which aims to select the optimal voltage vector using system discrete model equations just once in each control cycle is able to reduce the current tracking error. Thus, low THD symmetrical current is injected to the utility...
Recently, the wireless EV chargers have been spotlighted because of safe, and easy use apparatus. Proposed has been a newly developed large-gap wireless power transfer EV charger which can communicate control signal to a power feeding from a secondary side with no communication equipment. The SEPP inverter WPT apparatus is designed for large-gap loose-coupling condition by characteristic-impedance...
This paper deals with attractive voltage-source single-ended sub-resonant HF inverter as a simple wireless power transfer (WPT) based on unidirectional IPT in addition to Dual Active HF inverter and HF rectifier as transmitter and receiver of WPT is developed for bidirectional EV2H smart energy management architecture. Firstly, the voltage source single-ended sub-resonant HF inverter using a single...
In order to reduce the system cost, volumetric size and weight of an electric vehicles (EVs) battery charger, a novel four-switch two-leg VSI configuration is propose for rapid battery charging with the active power filter (APF) features. It consists of cost-effective two-arm bridge converter, coupling inductors, LC filters, buck converter and EV battery. Note that the conventional three-leg bridge...
In recent years, as an eco-friendly EV charging system, the wireless charging has become a topic due to the merits such as convenient, safety, and clean. In this paper, in order to realize a large-gap wireless charger which can communicate between the power feeding and receiving units without any additional communication device, a wireless power transfer (WPT) system using a single-ended push-pull...
This paper presents an active-clamp flyback microinverter for grid connected photovoltaic (PV) ac module system. The active-clamp circuit achieves the soft switching by allowing a negative current that discharges the output capacitor of the primary switch and zero voltage switching (ZVS) turn on is achieved. The active-clamp switch is also operated in ZVS. Therefore the switching losses of the high...
This work is focused upon power electronic motor-driven scooter and its related new EDLC (Electric Double Layer Capacitor) charger. The electric scooters are eco-friendly, high performances and more convenient. In addition, it is effective method suitable for global environmental issues and energy concerned problems. This report mainly deals with an EDLC based-electric scooter and a unique pulse super-rapid...
This paper is mainly about the efficiency and leakage magnetic field of five types of power transfer coils with different structures in a magnetic resonant WPT system with a single-ended inverter. Five pairs of square coils have been formed, so as to compare the efficiency and magnetic field reducing effects by simulation.
This paper mentions about a lower switching noise control method for two-legs three-phase inverter. Usually, six switch devices are necessary to construct three-phase inverter, one of two-legs type inverter can generate three-phase voltage. This type inverter uses voltage divide capacitors, and often uses rectified voltage source with ripple component. To switch control of the inverter, PWM method...
This study aims to elucidate industrial performance of a recently developed SiC power module constituting of a pair of switches (two in one type, maximum rating 1200V/120A) for two types of high frequency inverters. They operates at 100kHz for induction heating applications. Firstly, a conventional voltage fed full-bridge type high frequency inverter bread board is prepared feeding 3kW output power...
This paper proposes a soft switching type dc-dc converter. To suppress noise levels, reformed delta-sigma modulation circuit is introduced. To reduce switching loss, the proposed converter also introduces soft switching technique.
The research target is the development of the DC/DC converter for charging from 200V NiMH or Li-Ion battery to 12V Lead-acid storage battery in hybrid cars such as Toyota Prius. In car, a 12V Lead-acid storage battery is used to operate air conditioner, main lights and various actuators in engine control unit etc. Before the lead-acid battery ends up all the discharge, it should be charged using the...
This paper proposes a new conceptual control method for three-phase quasi-Z-source inverter (qZSI) - operating under the One Dimension q-Z-Source Inverter (ODqZSI) which is based on the Single-Phase Modulator technique. The notable feature of the proposed control scheme compared with the space vector modulation strategy is its inherently reduced computational processing time. The obtained simulation...
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