Recently, there have been more needs of the integrated efficient and systematic microgrid energy management for increasing distributed energy resources (DER). The configuration of microgrid is generally so variant that it is difficult to be standardized. For the fast and complete integration of software applications over each microgrid, a flexible real-time database (RTDB) platform for microgri...

A high-performance photovoltaic (PV)-battery hybrid power conversion system (HPCS) which is integrated to a microgrid using a quasi-Z-source inverter (qZSI). The battery system is directly connected to the intermediate dc link of the qZSI without any further converter which reduces the size and the cost of the power electronic interface. A controller equipped with a vocal compensator is designe...

Alternative Energy is becoming a popular and an essential energy resource in the current century. This paper investigates the effect of using a hybrid microgrid system in Langkawi and Socotra Islands. Configuration of the optimal hybrid system is selected based on the best components and its sizing with appropriate operation strategy to provide a cheap efficient, reliable and cost effective sys...

Renewable energy sources are gradually being recognized as important options in supply side planning for microgrids. This paper focuses on the optimal design, planning, sizing and operation of a hybrid, renewable energy based microgrid with the goal of minimizing the lifecycle cost, while taking into account environmental emissions. Four different cases including a diesel-only, a fully renewabl...

This chapter titled “Hybrid AC/DC Microgrids: Solution for High Efficient Future Power Systems” presents a new configuration for future power systems which is the hybrid AC/DC gird for high efficient connection of the inherent AC and DC sources and loads. Three-phase AC power systems have been in dominant position for over hundred years due to invention of transformer and the inherent character...

Comprehensive analysis of Distributed Energy Resources (DER) integration requires tools that provide computational power and flexibility. In this context, throughout this paper PHIL simulations are performed to emulate the energy management system of a real microgrid including a diesel synchronous machine and inverter-based sources. Moreover, conventional frequency and voltage droops were incor...

The subject of the present dissertation is the automatic speaker-inde¬ pendent recognition of isolated German digits spoken (by Swiss people) over the public switched telephone network. The approaches considered for this task are all based on hidden Markov models (HMMs). In ad¬ dition to the classic HMM approaches, several connectionist ideas are investigated in order to improve the discriminat...