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In general cases, particularly in developing countries, the weakness of the national electric grid is due to overloading, high temperatures and bad weather. In such systems, the interruptions of electricity supply can take several hours to days. To prevent the power deficit, consumers can use diesel generators that are very noisy and highly polluting. But, as alternative, this paper proposes a combination...
In this paper, a four-port DC-DC converter(FPC) is proposed for electric vehicle application integrated with renewable sources and energy storage system. The four port of the converter is two input, one bidirectional port, and one output. The charging, discharging states and the disturbance at the input side are controlled. The detailed analysis and simulation of the four-port DC-DC converter are...
An incremental delta-sigma modulator with a self-making capacitor having a high voltage operating ability for a 12-cell battery pack is proposed in this paper. The measured voltage range for each battery is from 0 to 5 V, and the maximum input voltage reaches to 60 V. The self-making capacitor adopting a metal over poly silicon with a relatively thin layer of oxide between the two plates is generated...
This paper proposes a new battery management system (BMS) for a series string of battery cells. The proposed control structure is based on a duality of the adaptive droop control theory used in grid / microgrid connected sources. The presented BMS control structure yields higher reliability compared to the conventional ones due to its decentralization features and its communication-less ability. The...
Due to different initial state of charge (SOC) of energy storage system, the SOC of cascaded storage module is unbalanced in microgrid. Many conventional methods realize SOC balance of cascaded storage module based on centralized communication. In this paper, a decentralized SOC balancing method is proposed without any communication. In this scheme, the modified P-f curves are changed by the local...
Distributed Generation (DG) is a sustainable alternative energy paradigm that allows flexible customer-participated demand response management, however when coupled with battery storage in a carbon costed policy setting true reduction of greenhouse gas emissions may not necessarily be rewarded. This paper examines the role of policy settings using an established multi-agent simulation framework that...
This paper analyzes energy cost reduction from peak demand shaving when a CES provider adopts ESS for the CHP-based CES microgrid site in Seoul, Korea. The simulation results show that about 9% of peak shaving can be realized when a 270kWh ESS is used for three thousand CES households. When two or three ESSs are adopted, peak demand shaving increases at most into 12% or 14%, which concludes that ESS...
This paper presents a flyback converter based partial power processing structure for battery energy storage system (BESS). It combines both of the battery balancing functionality and power stage regulation functionality into one system. The proposed BESS only have one control variable which is the common duty cycle for all the flyback converters. It is used for the voltage or current regulation. There...
The paper presents a novel Telepower (−48V DC) reliability method, directly utilising site asset data in simulation software, to determine the effectiveness of battery replacement programs. Reliability is often estimated by a simple count of the number of outages per annum. This approach has many shortcomings because a count of outages can change dramatically even when the reliability of the physical...
This paper presents a DC microgrid integrated dynamic voltage restorer (DVR) system to mitigate the grid voltage sag and swell. The DC source of the DVR is the DC microgrid, including the PV array and hybrid energy storage system consisting of lithium-ion battery and supercapacitor. Compared to the conventional DVR supplied by pure energy storages, the DC microgrid will prolong the operation the DVR...
Energy management system (EMS) using renewable energy such as sunlight is expected to build a low-carbon society. In this paper, we report the modeling of EMS components using SPICE (simulation program with integrated circuit emphasis) and the estimation of the energy self-sufficiency rate by EMS simulation. We develop the simulation models of photovoltaic (PV) power generation system, storage battery...
Today an increasing number of batteries are equipped with a digital battery management system (BMS) either for safety issues or lifetime improvement, or for both. In order to avoid the use of dedicated wiring for communicating with these BMS, a power line communication (PLC) solution is proposed to communicate through the dc power line inherent in these systems. This solution is also designed to be...
Shrinking reserves of natural resources as well as incisive environmental pollution oblige humanity to rethink its generally favored propulsion concept: in the last decade electro-mobility as a refurbished technology gained greater significance once more. Due to political course setting, many German cities are testing Electric Vehicles (EV) especially in public bus transport. To get to the bottom...
This paper presents an estimation procedure of equivalent electric circuit parameters of a lithium-ion cell using data from a pulse charge/discharge test. An extraction process of the model parameters is based on a transient voltage response of relaxation process following a current pulse. The entire procedure is straightforward and there is no restriction in a number of parallel RC-branches in the...
Machine-to-Machine (M2M) communications is regarded as an important enabler towards the realization of the Internet of Things (IoT). M2M communication also referred to as machine type communication (MTC) enables devices to communicate directly or via a network gateway over the cellular network without or with-limited human intervention. Most MTC devices are operated by batteries and it is very critical...
In the upcoming years, thousands of battery storage systems will be decommissioned from electric vehicles. Instead of recycling or sending them immediately to landfills, these battery systems could be reused in other applications, such as grid or end-user applications. Second-life batteries are still expected to be capable of storing and delivering substantial energy. It is possible that they could...
In this study, a novel mode l of a Hybrid Electric Vehicle (HEV) based off the 2016 Chevy Volt is implemented and examined. The study will also examine the operation of the modified Series Parallel Hybrid Electric Vehicle (SPHEV) and modeled powertrain components contained within. The 2016 Chevy Volt has six unique modes of operation; however, the dual Permanent Magnet Synchronous Motor (PMSM) EV...
Coordinated mobility of people, goods, and energy is a foremost concern of infrastructure development. For example, deployment of advanced chargers and the associated communications networks will enable electric-vehicle fleets to serve particular needs of the power grid and microgrids. Incorporating plug-in electric vehicles as agents of energy storage in the grid can provide services to ancillary...
Wind and solar energy have become very popular options for energy conversion over the past years. This is particularly true for wind energy which is experiencing significant growth year-on-year. A significant part of this growth is at large-scale commercial power systems. However, there is a growing interest in small-scale renewable energy technologies to capture this intermittent but plentiful resource...
In this paper, a second-order sliding mode control based on super-twisting algorithm is applied for bidirectional DCDC converter. Two sliding mode controllers are given for buck mode and boost mode of the DCDC converter, and they can be switched to achieve the voltage/current output regulation according to the different working conditions of DCDC converter. Different working conditions of DCDC converter...
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