A fault protection and location method for a dc bus micro grid system is presented in this paper. If a fault causes the dc bus to de-energize completely, it makes locating faults very difficult. The proposed algorithm can be implemented and executed by an intelligent electrical device for an individual node. The bus was segmented into overlapping nodes and links with circuit breakers (CBs) to i...

This paper presents the comparative study of various Multicarrier Pulse Width Modulation techniques with Sinusoidal reference for single phase seven level cascaded Z-source inverter designed with three intermediate Z-source networks connected between the input source inverter circuit. The cascaded Z-source based MLI technique enhances the fundamental output voltage and reduces the Total Harmoni...

Space Vector Pulse Width Modulation (SVPWM) method is an advanced, computation intensive PWM method and possibly the best among all the PWM techniques for variable frequency drive applications. The SVPWM is an alternative method for the determination of switching pulse width and their position. The major advantage of SVPWM stem from the fact that, there is a degree of freedom of space vector pl...

<p>This paper focuses on the modeling and control of a wind energy conversion chain using permanent magnet synchronous machine. This system behaves turbine, generator, DC/DC DC/AC power converters. These are connected both sides to DC bus, where inverter is followed by filter which grid. In this paper, we have been used two types controllers. For stator side converter, consider Takagi-Sug...

This paper presents the mathematical modeling and control design procedure of compressor motor an air conditioner using energy from a photovoltaic system combined with power grid in DC microgrid. A comprehensive model considers interconnection cells their associated DC/DC converter, bus, three-phase squirrel-cage induction its driver, bidirectional DC/AC output filter, grid. The state-of-the-ar...

A DC microgrid has many advantageous features, such as low power losses, zero reactive power, and a simple interface with renewable energy sources (RESs). bipolar is also highlighted due to its high-power quality, improved reliability, enhanced system efficiency. However, the high bus voltage fluctuation load unbalance between poles. Therefore, this paper analyzes that can occur in microgrid. A...

Work on the AUV NILM project has proceeded along two main fronts: In January 2009, we installed a NILM system in the Odyssey Class AUV at MIT. The primary components are the following: • Wireless Adapter Figure 1 shows the sensor and power board designed for use in the AUV. Circuitry on this board is powered directly from the 96V DC signal provided from the Li-ion battery pack. This voltage is ...

In a DC microgrid that involves battery storage system, the primary energy management is performed by charger/discharger based on dc/dc power converter. Moreover, also used to regulate voltage of dc bus. One challenges at control level bus under charge and discharge conditions but different relations between voltages. For this reason, paper proposes Sepic/Zeta converter an adaptive controller, ...

Microgrids have played an important role in distribution networks during recent years.  DC microgrids are very popular among researchers because of their benefits. Protection is one of the significant challenges in the way of microgrids progress. As a result, in this paper, a fault detection and location scheme for DC microgrids is proposed. Due to advances in Artificial Intelligence (AI) and s...

A novel integrated optimization method is proposed to combine both generation and transmission line expansion problem considering bus voltage limit. Most of the existing researches on the combined generation and transmission expansion planning cannot consider bus voltages and reactive power flow limits because they are mostly based on the DC power flow model. In this paper the AC power flow mod...