In recent times, multilevel inverters (MLIs) are gaining popularity for grid integration of distributed power generation sources. this paper, a proportional-resonant (PR) controller based on current control logic is proposed single-phase eleven-level inverter topology, enabling the sources into grid. The presented topology utilizes eight two-quadrant switches and three dc to produce an output v...

Photovoltaic inverters are the most mature of any DER inverter, and their mean time to first failure (MTFF) is about five years. This is an unacceptable MTFF and will inhibit the rapid expansion of PV. With all DER technologies, (solar, wind, fuel cells, and microturbines) the inverter is still an immature product that will result in reliability problems in fielded systems. The increasing need ...

Microgrid as the main building block for future smart grids is prone to instability originated from converter-based distributed generations (DG). Herein, we first analyze small-signal stability of an inverter-interfaced microgrid. Afterwards, a novel adaptive network fuzzy inference system (ANFIS)-based optimization method introduced which aims at online tuning virtual inductances (VI) in islan...

Prominent worldwide environmental problems makes the development of new energy distributed generation technology has been developed. Direct access to the low-voltage distributed power distribution network makes the system affected to some degree, in the form of micro-grid integration of distributed power is a good solution, and the presence of a large number of micro-grid inverter, micro-networ...

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 proposed dynamic model w i l l account for the electrochemical and thermo dynamic characteristics of SOFC. Effects of temperature variations and fluid flow changes wil l be incorporated in the model. Voltage drops inside a fuel cell w i l l a l s o model. SOFC is connected to Grid through DC-DC Boost converter and a 3-phase voltage source inverter. The output of 3-phase inverter is fed to t...

Ripple control is the technique of controlling loads and other devices in the distribution grid by sending lowfrequency signals along the phase conductors or the neutral conductor. The magnitude of the signal is determined by the impedance of the network, loads, capacitor banks, filters and generators. An increase of the amount of electrical equipment connected to the grid, e.g. due to an incre...

Received Apr 4, 2017 Revised May 9, 2017 Accepted Jun 30, 2017 This paper proposes a power management strategy of parallel inveters based system, to enhance the power generation capacity of the existing system with distributed energy sources one has to choose DG source based inverter connected in parallel with the existing system.Two DG sources PV, Fuel cells feeds the DC voltage to two paralle...