N. S. Srivatchan ¹, P. Rangarajan ², S. Rajalakshmi ²

Affiliations
1 Department of Electrical and Electronics Engineering, Sathyabama University, Chennai 600 – 119, Tamil Nadu, IN
2 Department of Electrical and Electronics Engineering, R.M.D. Engineering College, Anna University, Chennai 601 – 206, Tamil Nadu, IN

Abstract

Background/Objectives: Maintaining constant frequency in an Islanded microgrid is highly demanding and challenging issue. Therefore it is proposed to use Robust PI Controller for controlling the frequency of islanded microgrid using Energy Storage system. Methods/Statistical Analysis: The proposed Robust PI controller provides the required frequency stability to the islanded microgrid. The test modeled in MATLAB Simulink environment. The Test system modeled as typical remote location (Island or Military Power Grid or Geographically Disconnected or Hilly Terrain) with a wind turbine and Solar panel, along with distributed loads and Energy storage system. Findings: The drawbacks of the traditional PI controller to adapt to the parametric variations and to provide faster response is overcome using proposed Robust PI controller. The inherent disadvantage of PID controller such as instability and peak overshoot is also overcome with the proposed controller. The Proposed Robust PI controller provides the improved dynamic frequency stability and reduced peak overshoot to the islanded microgrid with in 0.3seconds, if the microgrid is suddenly disconnected from the main grid. The controller also tested under various conditions and it provides required frequency stability to test system during islanding operation. The proposed method is simple, flexible and provides improved performance as compared to the existing methods and approaches for frequency stability of islanded microgrid. Application/Improvements: The proposed controller can be used in remote location and provides simple, yet cost effective solution as compared to costlier PID Controller based on fuzzy logic and neural network.

Keywords

Battery Energy Storage System, Distributed Renewable Energy Systems (DRES), Frequency Stability, Islanded Microgrid, Robust PI Controller

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E. Padma ¹, S. Rajalakshmi ²

Affiliations
1 SCSVMV University, Enathur - 631561, Tamil Nadu, IN
2 SJCAC, SCSVMV University, Enathur - 631561, Tamil Nadu, IN

Abstract

The major objective of the paper is to implement cost effective TPM based software, which reduces the TPM chip as it is implemented in hardware. Also to improve security among computers and to authenticate the users by using secured software based TPM. To improve the authentication of various client devices that are connected to private network. The research has to be exposed to all possible threats involved in TPM based on weaknesses of password based authentication, such as easy to guess, subject to dictionary attack, easy to snoop or lose and easy to share with others. The methodology involved in this paper must protect the compromised client and enable network administrator from causing disrupt to the available network. The systems with TPM must store sensitive data in a secure location instead on separate piece of chip. The major statistical survey of this paper deals with the primary machine, which will be allocated to each individual user by accepting their necessary details like device information. The collected information will be kept as a private connected network in a local server. If new user wants to access the locally connected machine, then his information will be collected separately and username and password will be sent to him through mobile. The temporary users’ information will be kept in the secondary machine for future use. In this way, the system will get improve secure feature and avoid unauthenticated user to access the machine. The proposed system performs well to safeguard the information and it is experimentally verified in various organizations. In banking information system, each employee’s information is verified and stored in the background server. This will protect the information more secure between the clients and the server. As an improvement, the research work will be carried out for business intelligence in Internet of Things using Mobile Application.

Keywords

Authenticated User, Connected Network, Information Retrieval, Password based Authentication, Trusted Platform Module

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