Ultracapacitors are energy storage devices that have shown outstanding capability in a vast spectrum of applications, mainly systems required to deliver short bursts electrical energy. possess high power density while batteries density. In this paper, hybrid device comprising lithium-ion ultracapacitor module and lead acid battery was modeled, built, tested for vehicular start–stop application,...

A hybrid energy storage system (HESS) consists of two or more types components and the power electronics circuit to connect them. Therefore, real-time capacity this highly depends on state cannot be simply evaluated with traditional battery models. To tackle challenge, an equivalent charge (ESOC) which reflects remaining a HESS unit in specific operation mode, is proposed paper. Furthermore, ES...

This paper focuses on introducing a modular cascaded battery energy storage system and establishing mathematical model for both the AC DC sides of system. Based this, corresponding control strategy is proposed. To achieve specific trade-off between switching times output harmonics, new hybrid modulation (NHPWM) proposed that combines characteristics NLM CPS-PWM commonly used in traditional topo...

Nowadays the use of Hybrid Electric Vehicles (HEV) is increasing dramatically. The HEV is mainly dependent on electricity and there is always a need for storage of charge. Fuel Cell (FC), Batteries and Ultra Capacitor are being used for the proposed HEV as an electric power source or as an energy storage unit. The aim of developing an energy management technique is to utilize the sources accord...

Fossil Fuels are always considered as environmental pollutants. On the other hand, the political and economic situations highly affect the price of these fuels. Offshore wind and wave, as renewable energy sources, represent the better alternatives for electricity generation. Therefore, it is necessary that wind speeds effectively be estimated due to the absence of field measurements of the wind...

Hybrid electric vehicles are those powered from two different sources. Typically, they are equipped with an internal combustion engine, and also with an electrical storage system, such as a bank of batteries or ultra-capacitors. While braking, these vehicles may convert kinetic energy to electrical energy and send it back to the electrical storage system (regenerative braking). The whole vehicl...

Abstract To improve the stability of a wind-diesel hybrid microgrid, frequency control strategy is designed by using energy storage system and adjustable diesel generator with load (LFC). The objective to quickly respond disturbed reduce deviation restore stability. By evaluating area error, disturbance state can be divided into four different areas corresponding for precise adjustments. For ge...