Waveform of EDLC Voltage

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The document discusses a high efficient battery backup system for lift trucks that uses an interleaved converter and increased electric double-layer capacitor (EDLC) voltage range. It aims to improve the efficiency and lifespan of backup systems for lift trucks that currently use lead-acid batteries by replacing them with an EDLC bank operating at a wider voltage range when interfaced with an interleaved converter.

Engineering

[Reference]
High Efﬁcient Battery Backup System for Lift Trucks Using Interleaved-Converter and IncreasedEDLC Voltage Range
Waveform of EDLC Voltage

Nowadays, more and more distributed generations and renewable energy sources, such as wind, solar and tidal power, are connected to the public grid by the means of power inverters. They often form microgrids before being connected to the public grid. Due to the availability of high current power electronic devices, it is inevitable to use several inverters in parallel for highpower and/or low-cost applications. So, inverters should beconnected in parallel to provide system redundancy and high reliability, which are important for critical customers. In this paper, the modeling, designing and stability analysis of parallel-connected three-phaseinverters are derived for application in renewable energy systems. To enlarge voltage adjustability, the proposed inverter employs an improved switched inductor Z-source impedance network to couple the main circuit and the power source. Compared with the classical Z-source inverter (ZSI) and switched inductor Z-source inverter (SL-ZSI), the proposed inverter significantly increases the voltage boost inversion ability and also can increase the power capacity and the reliability of inverter systems. The proposed topology and its performances are validated using simulation results which are obtained in Matlab/Simulink.

Low Power Energy Harvesting & Supercapacitor Storage

IOSR Journals

Mt2521912199

IJERA Editor

SUPERCAPACITORS AND BATTERY POWER MANAGEMENT FOR HYBRID VEHICLE APPLICATIONS ...

Pradeep Avanigadda

This project presents super capacitors and battery association methodology for ECCE Hybrid vehicle. ECCE is an experimental Hybrid Vehicle developed at L2ESLaboratory in collaboration with the Research Centre in Electrical Engineering and Electronics in Belfort (CREEBEL) and other French partners. This test bench has currently lead-acid batteries with a rated voltage of 540 V, two motors each one coupled with one alternator. The alternators are feeding a DC-bus by rectifiers. The main objective of this paper is to study the management of the energy provides by two super capacitor packs. Each super capacitors module is made of 108 cells with a maximum voltage of 270V. This experimental test bench is carried out for studies and innovating tests for the Hybrid Vehicle applications.

mahfooz_ supercapacitor

Mahfooz Alam

As a consequence of sensitive, diverse and complex loads in today's distribution networks, improving power quality in distribution systems has attracted great attention. Power quality issues involve voltage sags, transient interrupts and other distortions in sinusoidal waveforms. Enormous methods have been proposed for power quality modification. One of the methods by which power quality problems might be addressed is to apply power electronic devices in the form of custom power devices. One of such devices is Dynamic Voltage Restorer (DVR) which is connected in series to distribution networks. At the same time, through injection of voltage to the network it is able to control voltage amplitude and phase. It is adopted lend to compensate for voltage sags through injecting series and synchronous three phase voltage. Consisted of three single phase inverters and a DC bus, it can protect susceptible loads against various types of voltage sags as well as other disturbances in the power supply. Moreover, it is capable of generating and absorbing active and reactive power. Therefore, in this paper, different structures of DVR have been investigated and eventually proposed a new structure for DVR based on Γ-Source asymmetric inverter. With the proposed structure, severe voltage sags can be retrieved 80- 90 percent. The simulation results that obtained by using MATLAB/Simulink indicate the properly functioning of proposed structure.

Lb2418671870

IJERA Editor

Supercapacitor Typical Applications

Matrix Electrónica

Tugas yoga

gentur widodo

Improving the Stability of Cascaded DC Power Supply System by Adaptive Active...

IJMER

Abstract: When all links are changes in the cascade is the corner of the shape in the dc division energy orbit (DEO). When resistances are intermission betwixt one by one stylish changes in that would possibly end up so the cascaded orbits are unsteady. They are antecedent we can place in a nearer to the useful in the cascaded orbit can be got in compelled to vary the supply they have load changes in the internal structure of the same regions in the electrical device they can be opposed in a quality of the characteristic of dc DEO. Throughout the Associate in nursing adaptation active device in the (AACC) we can know another determined in the cascaded orbit. Therefore the AACC was connected by side by side in the cascaded orbit’s they can mediate in between the carries and completely a requirement of a notice then they carries the voltage with none modification in this subsystems. Then it will have a stylish to the customary have basic units to measuring in the dc DEO. When the AACC is additionally a similar bus device to cut back the output resistance of the supply device, therefore averting in a interiority have their load changes in the input resistance, of the cascaded orbit have their solutions then they becomes constant. We have important carrier device it will computing in the AACC adaptation in line with they have output energy to the cascaded orbit, they have energy vesting in the AACC that’s way they will reduced and therefore they have a lot of energy in a reacting to the orbit so it is a best in the orbit of a submissive device. What\'s many, since no capacitance have a requirement among an AACC, when the cascaded orbits have their quantity of it slowly it will extend in time. They have activity fundamental truth to stop their magnificence thought in the AACC are mentioned throughout of this project, it can have four thousand eight hundred and zero watts cascaded orbit was contain a strive of process to move in a full-bridge changes they can be styli shed and evaluated. So when the simulation solutions have to clear the performance of the arrangement of AACC.

Development of a novel ultracapacitor electricTania Martinez

A Modified Dual Input DC-DC Converter for Hybrid Energy Application

International Journal of Power Electronics and Drive Systems

Power electronic interface has reached a new level in the area of hybrid energy integration nowadays. The existence for the concept of hybrid energy integration is truly questionable without a proper power electronic interface. In this paper, a modified dual input DC-DC converter which is capable of incorporating two distinct V-I characteristic sources such as solar-PV, battery, fuel cell, etc., is proposed. The converter has the ability to operate in both unidirectional and bidirectional mode with buck, buck-boost and boost operation. The software simulation of the proposed converter has been conducted in MATLAB/Simulink platform in a detailed manner and an experimental prototype of the propsed converter has been built to validate the simulation results.

Supercapacitors and Battery power management for Hybrid Vehicle Applications ...

Pradeep Avanigadda

This paper presents supercapacitors and battery association methodology for ECCE Hybrid vehicle. ECCE is an experimental Hybrid Vehicle developed at L2ES Laboratory in collaboration with the Research Center in Electrical Engineering and Electronics in Belfort (CREEBEL) and other French partners. This test bench has currently lead-acid batteries with a rated voltage of 540 V, two motors each one coupled with one alternator. The alternators are feeding a DC-bus by rectifers. The main objective of this paper is to study the management of the energy provides by two supercapacitor packs. Each supercapacitors module is made of 108 cells with a maximum voltage of 270V. This experimental test bench is carried out for studies and innovating tests for the Hybrid Vehicle applications. The multi boost and multi full bridge converter topologies are studied to define the best topology for the embarked power management. The authors propose a good power management strategy by using the multi boost and the multi full bridge converter topologies. The experimental and simulation results of the two converter topologies are presented.

A Novel Design of Hybrid Energy Storage System for Electric Vehicles

Asoka Technologies

In order to provide long distance endurance and ensure the minimization of a cost function for electric vehicles, a new hybrid energy storage system for electric vehicle is designed in this paper. For the hybrid energy storage system, the paper proposes an optimal control algorithm designed using a Li-ion battery power dynamic limitation rule-based control based on the SOC of the super-capacitor. At the same time, the magnetic integration technology adding a second-order Bessel low-pass filter is introduced to DC-DC converters of electric vehicles. As a result, the size of battery is reduced, and the power quality of the hybrid energy storage system is optimized. Finally, the effectiveness of the proposed method is validated by simulation and experiment.

High Voltage Gain Boost Converter for Micro source Power Conversion system

IDES Editor

In this paper, a new boost converter is introduced. In the proposed converter, a coupled inductor and voltage lift technique is used for raising the voltage gain .The designed converter especially for large voltage conversion ratio applications. By combining coupled inductor and voltage lift technique, the energy stored in the leakage inductor is recycled, therefore reduce the switch turn- off voltage and implement soft switching turn-on operation. The operating principles and steady-state analyses of continuous –conduction mode is discussed in detail. A 250W Converter Operating at 50KHZ with 25V input and 240V output simulation is presented to demonstrate the performance.

Supercapacitors in Transportation Applications

KEMET Electronics Corporation

The transportation industry continues to adopt more supercapacitors into their designs each year. Advantages in power density, cold temperature performance, and lifetime make them suitable for accompanying or replacing a battery bank. This presentation introduces what a supercapacitor is (it isn't just a big capacitor!), some characteristics to consider, and two applications of ELDCs. This paper was presented by KEMET at the 2015 Applied Power Electronic Conference in Charlotte, NC.

Analysis of Fuel Cell Based Multilevel DC-DC Boost Converter for Induction Motor

IJMTST Journal

In this paper new topologies and interleaving modulation concepts for multilevel DC-DC boost converter enabling a significantly less loss and a reduced chip size of the power semiconductors are proposed. The distributed generation (DG) systems based on the renewable energy sources have rapidly developed in recent years. These DG systems are powered by micro sources such as fuel cells, photovoltaic (PV) systems, and batteries. Fuel cells are considered to be one of the most promising sources of distributed energy because of their high efficiency, low environmental impact and scalability. Non-isolated high step-up DC-DC converters are required in the industrial applications. Many of these conventional DC–DC converters have the disadvantages of operating at high duty-cycle, high switch voltage stress and high diode peak current. A three-level step up converter is implemented to boost the fuel cell stack voltage of 96V to 340V. The proposed converter consists a system of fuel cell based Multilevel DC-DC converter with PI controller is modeled and simulated by using Matlab/Simulink.

Battery and Super Capacitor based Hybrid Energy Storage System (BSHESS)

Er. Raju Bhardwaj

The aim of this presentation includes that battery and super capacitor devices as key storage technology for their excellent properties in terms of power density, energy density, charging and discharging cycles, life span and a wide operative temperature rang etc. Hybrid Energy Storage System (HESS) by battery and super capacitor has the advantages compare to conventional battery energy storage system (BESS). This ppt describes the hybrid energy storage system that is suitable for use in renewable sources like solar, wind and can be used for remote or backup energy storage systems in absence of a working power grid. This ppt based on my research work in the field of "Energy Storage Technologies(EST) and Hybrid Energy Storage System (HESS)".

Super capacitor

iqbaldadi

Ultracapacitor based energy storage system for hybrid and electric vehicles

Akshay Chandran

Bidirectional Resonant DC-DC converter for Microgrid Applications

International Journal of Power Electronics and Drive Systems

This paper proposes a non-isolated soft-switching bidirectional dc/dc converter for interfacing energy storage in DC microgrid. The proposed converter employs a half-bridge boost converter at input port followed by a LCC resonant tank to assist in soft-switching of switches and diodes, and finally a voltage doubler circuit at the output port to enhance the voltage gain by two times. The LCC resonant circuit also adds a suitable voltage gain to the converter. Therefore, overall high voltage gain of the converter is obtained without a transformer or large number of multiplier circuit. For operation in buck mode, the high side voltage is divided by half with capacitive divider to gain higher step-down ratio. The converter is operated at high frequency to obtain low output voltage ripple, reduced magnetics and filters. Zero voltage turn-on is achieved for all switches and zero current turn-on and turn-off is achieved for all diodes in both modes i.e., buck/boost operation. Voltage stress across switches and diode is clamped naturally without external snubber circuit. An experimental prototype has been designed, built and tested in the laboratory to verify the performance of the proposed converter.

An Asymmetrical Dc-Dc Converter with a High Voltage Gain

IJMER

An asymmetrical full bridge converter is proposed in the paper. The proposed converter achieves zero voltage switching of all the power switches. Zero current switching of all the output diodes are also achieved here. This in turn provides a highly efficienct operation. The proposed converter can provide a high voltage gain and the voltages across the semi- conductor devices are effectively clamped. The converter can be utilised effectively in high voltage applications as embedded systems, renewable energy systems, fuel cells, mobility applications and uninterrupted power supply

Voltage Clamped Dc-Dc Convertor with Reduced Reverse Recovery Current And Sta...

IJMER

High Step-Up Converter with Voltage Multiplier Module for Renewable Energy Sy...

IJRES Journal

In this project, A novel high step-up converter, which is suitable for renewable energy system, is proposed.Through a voltage multiplier module composed of switched capacitors and coupled inductors, a conventional interleaved boost converter obtains high step-up gain without operating at extreme duty ratio.The configuration of the proposed converter not only reduces the current stress but also constrains the input current ripple, which decreases the conduction losses and lengthens the lifetime of the input source. In addition, due to the lossless passive clamp performance, leakage energy is recycled to the output terminal. Hence, large voltage spikes across the main switches are alleviated, and the efficiency is improved.

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Waveform of EDLC Voltage

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Waveform of EDLC Voltage