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.
In this paper, it is proposed a robust Second-Order Super-Twisting Sliding Mode Control for a Grid-connected inverter of a PV power plant. The proposed control strategy is able to maximize the energy extracted from the PV while regulating the DC-link voltage and achieving a power factor compensation and the reduction of currents harmonic distortion. Both in balanced or unbalanced condition, the grid...
Lithium-Ion Capacitors (LICs) are a new technology of hybrid supercapacitors that aims to deliver relatively high energy and high power. Therefore, they are known for their constitution inspired from lithium-ion batteries and conventional supercapacitors. Due to their hybrid structure, they have a unique behavior during aging. This paper concerns the effects of high temperatures (60°C and 70°C) and...
In this paper, a new approach for finding the optimal low speed regenerative braking cutoff point for Electric Vehicles (EVs) is proposed. This method is based on real-time sensing of motor current and disabling the regenerative braking at low speeds when the motor current falls below zero. It requires no hardware modifications to the existing architecture and can be implemented by modifying the brake...
In this article, a current control algorithm is conceived for converting solar dc power into ac power of high-quality. This conversion is based only on a dc-ac converter, avoiding the use of two stage converter. The proposed algorithm is founded on tracking the maximum power point which ensures controlling the electrical power exchanged with the grid. To assure a good dynamics and reduce the control...
Differential power processing (DPP) is a promising architecture to solve an issue caused by mismatch among PV modules. PV to non-isolated port bus (or PV to the virtual bus) is one of the topologies studied in DPP architecture that allows each DPP converters can achieve maximum power point tracking (MPPT) independently. The string current value does not have an effect on MPPT but relates to the power...
Conventionally power flow of transmission and distribution network is calculated separately. With the increasing penetration level of distributed generation (DG), such as photovoltaic and wind power, voltage and power characteristics of tie bus become complicated. The tight coupling problem appears between transmission and distribution network. As a consequence, the power flow calculation must be...
Circuit level energy metering is becoming increasingly important in energy savings and demand response applications. While smart meters efficiently monitor the residential energy consumption and make it available to the users, they fail to provide circuit level power consumption. In this study, an array of Giant Magneto Resistive (GMR) sensors are deployed on circuit breakers as stick-on sensors to...
Based on the inductive power transfer (IPT), the contactless approach allows safe and comfortable operations of battery charging for Electric Vehicles (EVs). In this paper, a contactless system particularly suitable for E-bike battery charging is proposed. A practical realization of the system has been carried out, aiming at the system evaluation in terms of working and efficiency. Through a phase...
The use of fossil energy has caused air pollution, energy crises, and it is not environmentally friendly. So, that is necessary to find alternative energy from biomass materials. Indonesia has the potential of developing alternative energy with a huge natural resource. Examples of mass bio energy developed such as: Jatropha, Palm, and Nyamplung (Calophyllum inophyllum L) oils. To assist the development...
Wireless power transfer technology offers significant improvement in convenience and electric safety for electric vehicle (EV) charging. Our research aims at novel designs that considerably reduce size and cost while increasing the coupling coefficient and improving the misalignment capability. We will first introduce the basics of wireless power transfer followed by discussion of a double-sided LCC...
This paper aims to analyze the enhanced performance of grid connected transformerless inverters (GCTI) by the application of novel Wide Band Gap (WBG) devices with modified PWM. Highly Efficient Reliable Inverter Concept (HERIC) is chosen for this study because of its excellent common-mode noise cancellation capabilities and numerous solar photovoltaic applications. HERIC inverter works efficiently...
This paper proposes a novel simple adaptive and online approach to estimate the state of charge (SOC) in Lithium Ion (Li-Ion) batteries based on a new model parameter identification method. First, a novel discrete model for the Li-ion battery is developed. This model is the key step in the development of the proposed parameter estimation algorithm. The estimated parameters are used for on-line calculation...
The aim of the presented paper is the study of an optimal integration of Supercapacitor based storage system and Inductive Power Transfer system for the free-catenary operation of a tramway. The paper starts from the definition of the Inductive Power transfer pad system and proposed an optimal integration strategy for the correct size of on-board supercapacitors and the inductive energy transfer.
Wireless signals dispatched from a remote operations center to command wind turbines are prone to impulsive interferences. In this applied context, this paper proposes the use of a median filter to mitigate these impulsive interferences in a doubly-fed induction wind turbine. To a perfect proposal evaluation, a co-simulation with the wireless system model and the generator predictive control one is...
This paper presents the development of forecast models for a wind farm producibility with a 24 hours horizon. The aim is to obtain accurate wind power predictions by using feedforward artificial neural networks. In particular, different forecasting models are developed and for each of them the best architecture is researched by means of sensitivity analysis, modifying the main parameters of the artificial...
In this study, a three-phase four switch inverter topology is proposed for PV systems. In power stage, a three-level neutral point clamped inverter is adopted. Thus, advantageous of the multilevel inverter topologies have been obtained with reduced number of switches. The proportional-resonant controller is designed to control the output voltage of the inverter to maintain a sinusoidal output voltage...
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.