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The power quality and resiliency (or self-healing capacity) characteristics of a renewable energy based microgrid (REM) are limited majorly due to their inherent dependency on the static power electronics based energy conversion devices. Whereas, conventional electrical machines based power plants possess good power quality and resiliency characteristics due to their high inertia and control features...
Conventional rotary electrical machines based power plants achieve good quality in power conversion due to the provision of smooth automatic generation control and voltage regulation. But, in case of renewable energy based microgrids, the inherent involvement of static power electronics based power conversion raises the issues of poor power quality and instability during uncertainties due to lack...
Hybrid renewable energy is an emerging notable choice in microgrids' formation to overcome the problem of intermittency that is usually raised while using a single renewable energy source. Generally, the hybrid renewable energy source produce DC power, which is to be converted to AC power to supply to loads and integrating with utility grid. Hence, the efficacy of a microgrid relies on its DC/AC power...
Intermittent character of the renewable energy sources and harmonic prone power electronic inverters are causing the power quality issues in renewable energy based microgrids (REMs). Hence, reliable and effective control strategies are required in order to address these issues. With this intent, this paper proposes a new control scheme based on virtual electric machines, named as “Closed Loop Virtual...
Renewable energy based microgrids are emerging as a potential solution to augment the utility grid energy. However, their inherent dependency on static power electronic inverters lesions utility grid equivalent rotational inertia, which effects the system resiliency during uncertainties. This degrades voltage-quality, frequency-stability, and self-healing capacity of the microgrid. This typical challenge...
The advent of multilevel inverters brings flexibility in the microgrids' design for numerous new applications. But, these static power electronic inverters possesses low moment of inertia, which effects the system resiliency in the event of uncertainties. This calls for a philosophy of emulating virtual inertia into the microgrid's operation while preserving the advantages of renewable energy and...
Microgrids deployment is primarily envisioned to meet the energy needs of remote areas due to inaccessibility of utility power. But, due to the recent globalization epoch, the rural and remote areas in the world are merging into urban communities and creating huge burden on the utility grid. Hence, the microgrids design focus has been shifting towards urban communities. Hybrid power systems are becoming...
In developing countries, the rate of rise in the demand is more than the generation, which results in grid outages frequently. There are number of drives to build synergistic and integrated microgrids to reduce burden on utility grid. Hybrid power systems are becoming a popular way in the design of microgrids by using locally available RES such as Photovoltaics (PV), Fuelcells (FC), and Windpower...
The objective of this paper is to model a hybrid power system for buildings, which is technically feasible and economically optimal. With a view to promote renewable energy sources, photovoltaics and wind turbines are integrated with the grid connected building. The system is modeled and the optimal system configuration is estimated with the help of hybrid optimization model for electric renewables...
Building microgrids are motivated to use locally available renewable energy sources to get rid of conventional utility grid outages and dependency on fossil fuels. Unit sizing plays a vital role in the design of microgrid architectures. Proper combination of distributed units will lead to optimal system configuration in terms of overall system size and cost. The nature and number of units considered...
This paper investigates two power quality improvement strategies for microgrids designed for urban community environment such as, buildings in medium-to-large constructions like universities, greater residential communities, financial districts, industrial zones, etc. In developing countries, the rate of increase in the demand is more than the supply, which results in regular outages. There are number...
At distribution system level, hybrid power systems are fast increasing and microgrids are being formed as an alternate source in almost all critical buildings or industries. At this point of time the utilities are looking for the demand side management to provide better services to manage their network. The new generation technologies of energy meters known as smart meters are used for multi-purposes...
This paper proposes the method of automating the process for switching of smart devices between different test beds using Distributed Control System (DCS). An asset maintenance application helps the maintenance personals to maintain smart devices in process industry. Using this application a maintenance operator can perform device specific maintenance activities like calibration, device configuration,...
The objective of this paper is to perform Hardware In the Loop (HIL) test for Flight Control Systems to evaluate the effectiveness of the proposed controller. Testing of a dynamic and complex real time embedded system is a challenge for an engineer, particularly in the field of avionics where, complexity of design and huge cost is involved. These challenges are addressed by the HIL technique. HIL...
This paper describes the attitude control of a Longitudinal Autopilot for General Aviation Aircraft is controlled by Artificial Neural Network PID (ANN-PID) controller. The conventional methods for finding gains of servo elevator and rate gyro are based on root locus and Offline PID controlling methods. But these methods are poor at disturbance rejection. Hence this paper proposes an online controller...
The objective of this experimental research paper is to explore a new methodology to simulate, manage and monitor a renewable energy based hybrid power system model. The model is developed using SIMULINK and the simulation of the model is carried out in real time by means of XPC target software. The energy management and control action for the system is achieved using a PLC, which interfaces the model...
The research on microgrid is primarily motivated to provide the energy need of the rural areas and/or the areas in which the utility power is not available. But due to the globalization of the world's economies, the rural communities in the world are moving towards urban communities. This paper aims to study the formation of microgrid in an urban environment. Buildings are one of the major consumers...
Orthogonal Frequency Division Multiplexing (OFDM) technique has become major multi carrier technique with the advent of wireless and mobile communications. It is known that OFDM is effective over frequency selective fading. However, ICI (inter-carrier interference) destroys the subcarrier orthogonality in time varying channels. The ICI can be mitigated by using different channel estimation schemes...
With increasing research on the field of alternative energy resources for sustainable development, more renewable energy sources are getting penetrated to the distributed network to form “microgrid”. This leads to more complexity in the distribution network in terms of energy management and realtime control. The objective of this paper is to design a system that forecasts the short (daily), medium...
In the area of process control engineering, PID controller plays a very vital role, which can be used as a process controller for the general industrial processes like liquid level, temperature, pressure, flow, and etc. Most of the research papers in the area of process control deals with setting up of these PID controller gains. There were many tuning algorithms evolved starting from the famous Ziegler...
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