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For small scale off-grid wind-solar-diesel hybrid generations with energy storage (WHGES), it is necessary to coordinate the operation of generation units and energy storage unit to maintain the voltage constant and supply the loads. This paper proposes a low cost charging scheme for off-grid WHEGES with 48V DC bus voltage. It is possible to realize the dynamic charging control of the storage unit...
Based on the analysis of the existing problems of photovoltaic(PV) systems with energy storage devices, the new modular independent PV power supply combined the PV cell and energy storage module was designed which contains the following five parts: the PV array, Battery module, Boost circuit, Buck circuit and the controller. The maximum power point tracking(MPPT) is located by the strategy of combining...
This paper is focused on the performance and limits of the boost rectifiers with unity power factor, in terms of the total harmonic distortion factor of the current drawn from the power supply. Different values of the prescribed output voltage are taken into consideration. The direct current control based on the output of voltage controller is proposed. The case study of a battery charging station,...
To explore new possibilities, Tokyo Metro Co., Ltd. has been working on various new technologies with a view towards practical use. From among these technologies, we explain “Stationary energy storage system (SESS)” and “Station auxiliary power supply unit” as facilities that could contribute to the reduction of environmental load.
It is crucial in near field communication (NFC) controllers for power source transferred from mutual induction of coils when the devices are battery-off. NFC devices can be operated at the condition of low battery or even battery-off due to the requirement of payment any time. Thus, the proposed wireless power transfer (WPT) power supply can have high efficiency due to the remove of reverse leakage...
In this paper, we present the design and performance of a portable, arbitrary waveform, multichannel constant current electrotactile stimulator that costs less than $30 in components. The stimulator consists of a stimulation controller and power supply that are less than half the size of a credit card and can produce ±15 mA at ±150 V. The design is easily extensible to multiple independent channels...
Uninterruptable power supplies (UPS) units are basically used in almost all military applications with preferred voltages of 36V DC and 48V DC. In such applications, Float Cum Boost Charger (FCBC) is most commonly used power supply module. Normally, the output voltage obtained from FCBC was used to drive the ULSB MK-II devices which operates on 48V DC. In the present work, the FCBC module has been...
The paper attracts on the substantial introduction of the smart solar powered battery backup system in the rural segments due to sizeable gap between demand and supply. The smart power distribution is estimated on the optimal outlay of the hybrid grid adopting as a smart technology and cost effective solutions of the power crisis for the emergency perusal and smart banking. To extend the gross domestic...
The paper overviews novel technique for wireless charging system of electric vehicle in which verifies the developed theory using battery charger application of electric vehicle. In electric vehicle charging of battery through charger and wire is inconvenient, hazardous and expensive. The existing gasoline and petrol engine technology vehicles are responsible for air, noise pollution as well as for...
In the view of making the full use and distribution of spacecraft power system energy, based on task requirements of the PV-BAT system under different fault models, the grid-tied converter's performance are verified, the function of the grid-tied controller in role of the energy converting are determined, for all kinds of energy conversion in the spacecraft, reference experience are provided.
Cardiac pacemaker is an electronic medical device which is used to control abnormal rhythms of heart. Pacemaker requires continuous supply of energy where conventional wires are unaffordable, inconvenient, hazardous, expensive and impossible. Currently wearable pacemaker is operated by embedded battery. But the battery has limited life and it requires lifelong provision of energy. Wireless power supply...
The authors have proposed the embodiments of the spacecraft power system with high frequency link, which allows adjusting solar battery voltage in a range sufficient to implement the maximum power point tracking (MPPT) mode and provides the coordination of voltage level of the solar battery, accumulator battery and load. The calculating technique of the weight dimension characteristics of spacecraft...
In 21st century, Electric vehicle(EV) as a green transportation tool, EV has won great attention from researchers, leading to a series of intensive and extensive studies. With the development of high-storage battery and EV, the number of the EV will rise dramatically, so that the random charging and discharging behavior will bring new challenges to safe and stable operation of power grids. The paper...
In this paper project and measured characteristics of the laptop's power supply station with photovoltaic module are presented. This device consists of two switch-mode voltage regulators, photovoltaic module and the lead-acid battery. In the following sections step-down and step-up switch-mode voltage regulators are described and the measured by the author characteristics of voltage regulators and...
The authors have proposed the structure of the highvoltage power supply system of low-orbit spacecraft based on regulated current inverter, which allows adjusting solar battery voltage in a range sufficient to implement the maximum power point tracking mode. The characteristics at drift of current-voltage curve of solar battery and different values of the load were obtained. The power supply system...
This paper considers scheme of primary power generation system with low output voltage. Total power of this system is 3.5 kW. Paper also presents configuration and experimental results for one channel of power generation system.
This paper highlights a few important hardware and software considerations taken in the designing process of an intelligent and highly configurable DC-to-DC ATX power supply designated especially for automotive applications. Using computers in automobiles born a series of interesting problems regarding the PSU behavior and characteristics. For example, controlling the startup and shutdown sequence...
This paper presents the building process of a small scale, cost effective portable solar power supply. The end product comes with a solar panel to capture and convert solar energy to electrical energy. The electrical energy was stored in a rechargeable battery with a charge controller to regulate the charging process. A battery level indicator was in place to monitor the battery storage capacity....
Resonant converters which use a small DC bus capacitor to achieve high power factor are desirable for low cost Inductive Power Transfer (IPT) applications but produce amplitude modulated waveforms which are then present on any coupled load. The modulated coupled voltage produces pulse currents which could be used for battery charging purposes. In order to understand the effects of such pulse charging,...
Energy can be harvested parasitically from ambient motions such as human movements like footsteps, motion of the automobiles etc., Transducers when subjected to external force convert pressure in to potential. This potential when accumulated can cater the needs of the present day world illuminating many houses, running fans, charging the batteries and basic amenities. The circuit designed in this...
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