The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Considering the issues of high electric power demand of various loads including propulsion load and pulsed load, energy storage system has become a vital part of the electric shipboard. In order to meet the transient and steady power demand of the medium voltage direct current (MVDC) power system of the all electric ship (AES), a hybrid energy storage system (HESS) consisting of a battery as high...
In order to maintain the bus voltage of a medium voltage DC (MVDC) shipboard power system within the allowable margin with the operation of different types of loads, the energy storage has become an indispensable part of all electric ship (AES). In this paper, a PI controller based energy storage management (ESM) system is designed to control the charging and discharging of the hybrid energy storage...
Aiming at solving starting-up failure and simple maintenance for heavy equipment in extreme condition, a multifunction electric power platform based on ultracapacitor technology was developed. In this paper, firstly, the characteristics of ultracapacitor were introduced and starting-up faults of heavy equipment in extreme condition are analyzed. Then, the function, principle and system scheme of multifunction...
In this work, a relatively less explored source of green energy is proposed. Random sound energy around us can be treated as a source of electric power after their efficient conversion using suitable transducer. An effective way of producing usable electric power from available random sound energy is presented here. Piezoelectric transducers are used for conversion of sounds into electric energy....
Stand-alone power systems are a challenging option to supply remote equipments in many applications. They include renewable energy generators whose intermittent power supply requires an appropriate energy storage component to balance the power mismatch between the generation and the demand. Batteries are the obvious choice for this purpose. However, the irregular fluctuations and hard transients would...
Today supercapacitors became an option to store and release electrical energy, common in many applications. A transport more efficient and less pollutant is a target of many car manufacturers. The success of this new vehicle structures technology development depends on the energy storage using batteries and supercapacitor. Therefore, many systems today are based on vehicle battery technology, because...
As the overall structure of how electricity is delivered continues to change, ultracapacitor is considered as a possible energy storage device. Its application considerations range from electronics to large scale power systems. Much of its current uses in large scale applications, however, are focused on transportation needs with hybrid and electric vehicles. Its high specific power and moderate specific...
Overall structure of electrical power system is in the process of changing. For incremental growth, it is moving away from fossil fuel based operations to renewable energy resources that are more environmentally friendly and sustainable. At the same time it has to grow to meet the ever increasing need for more energy. These changes bring very unique opportunities and obstacles. Over the past few decades...
Wireless sensors provide solutions to otherwise intractable problems where it is impractical to deploy wired sensors. One of the biggest challenges facing wireless sensors is power. Advances in power management and battery technologies may soon enable three year life from primary batteries, but will require stringent control over sensor operation that, in many applications, will place unacceptable...
A smoothed-power output topology for battery of stand-alone renewable power system (SARPS) using EDLC (electric double layer capacitor) is presented. To prolong the service life of battery, decrease maintenance cost and power loss of SARPS by realizing smoothed-power output supply, an EDLC is paralleled with battery as a part of storage system, and connected by a bi-directional buck/boost compensation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.