Development Of Efficient Control Strategies For Single Phase Grid Integrated Inverters For Photovoltaic Applications (Record no. 77720)

000 -LEADER
fixed length control field nam a22 7a 4500
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20181001171647.0
006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS--GENERAL INFORMATION
fixed length control field t||||||m 00| 0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 181001b2018 xxu||||| m||| 00| 0 eng d
041 ## - LANGUAGE CODE
Language code of text/sound track or separate title eng
100 ## - MAIN ENTRY--AUTHOR NAME
Personal name Chatterjee, Aditi
Roll Number/Miscellaneous information 513EE1006
245 ## - TITLE STATEMENT
Title Development Of Efficient Control Strategies For Single Phase Grid Integrated Inverters For Photovoltaic Applications
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Year of publication 2018
300 ## - PHYSICAL DESCRIPTION
Number of Pages 147 p.
502 ## - DISSERTATION NOTE
Degree Type Thesis Ph.D
Name of granting institution National Institute of Technology, Rourkela
520 ## - SUMMARY, ETC.
Summary/Abstract, etc Diminution of fossil fuel reserves and increased concern about environmental pollution has amplified the demand of renewable energy sources (RES) for power generation. Penetration of renewable energy based power plants into the conventional distribution system has increased the use of power electronics converters (PEC). The PECs are used to convert the power generated by the RES based distributed generation(DG) plants into a form of power which is compatible with the distribution grid. The PECs integrating the DG plants with the grid have stringent control requirements, which are specified in the standards such as IEEE 1547 and IEC 61727.<br/>Solar energy utilization is the fastest growing sector among all forms of renewable energy, with net increase in solar power generation by an average of 8.3 % per year as per<br/>International Energy Outlook (IEO), 2016 report. Single phase voltage source inverter (VSI) is used to interface photovoltaic (PV) based DG plants with the single phase grid in residential areas. Generally, there are two controllers associated with grid connected PV systems. One is the input side maximum power point tracking (MPPT) controller and the<br/>other is the grid side controller. The grid side controller has to perform multiples tasks, which include DC-link voltage control, grid synchronization, regulation of active and reactive power exchange between the DG plant and the grid and injection of high quality power into the grid. The grid side controller incorporates two control loops: the outer voltage control loop and the inner current control loop. The inner current control loop is responsible for injecting good quality current into the grid, power flow control and grid synchronization. Researchers have proposed several current control techniques for single phase grid tied inverters in recent years. Several drawbacks have been identified with the conventional control techniques. Hence, there is a need to develop control strategies with<br/>intuitive design methodology, to satisfy the control requirements of grid tied DG inverter under both steady state and transient operating conditions.<br/>In this thesis, various current control strategies for single phase grid integrated inverters have been reviewed with their pros and cons. The significant control strategies<br/>namely current hysteresis control (CHC), proportional integral (PI) control, proportional resonant (PR) control and dead beat control (DBC) have been designed and analyzed for a grid tied single phase VSI. A digital model predictive control (MPC) based current controller is introduced for single phase grid tied inverter. A comparative performance<br/>assessment of the proposed current control strategy with the conventional controllers is also performed. The model predictive current controller (MPCC) is found to outperform<br/>the other existing current controllers in steady state and transient state operating conditions. The design and implementation of the MPCC scheme is simple. The proposed<br/>control strategy is implemented on a hardware prototype using TMS320F2812, digital signal processor (DSP). A delay compensation technique is also proposed for the MPCC<br/>to compensate for the delay that is introduced when the control scheme is implemented on digital platform. The delay compensated model predictive current controller (DC-MPCC)<br/>is implemented for a dual stage single phase grid integrated PV system.<br/>A grid voltage sensorless control algorithm is also introduced for single phase grid tied VSI. In this control algorithm, a damped resonant compensator (DRC) is used to<br/>estimate the voltage reference signal and the grid voltage is estimated using some simple mathematical calculations. A phase locked loop (PLL) less synchronization scheme is<br/>proposed to synchronize the inverter output current with the grid voltage. The DC-MPCC is employed for current control. The voltage sensorless control technique does not interfere with the current controller performance. Decoupling control of active and reactive power is achieved through the proposed scheme. When the grid demands reactive power, the same can be provided by the VSI, by controlling the reactive current component which is in quadrature with the active current component. Elimination of voltage sensor reduces the overall cost of the system and improves the system reliability. The efficacy of the proposed grid voltage sensorless control scheme is validated by experimental implementation using dSPACE 1104 real time controller.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term Power Electronics
General subdivision Power Transformers
-- Renewable Energy Sources
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name Mohanty, Kanungo Barada
Relator term Supervisor
710 ## - ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element Department of Electrical Engineering
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier http://ethesis.nitrkl.ac.in/9450/
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Thesis (Ph.D/M.Tech R)
Holdings
Withdrawn status Damaged status Collection code Permanent Location Current Location Shelving location Date acquired Accession Number Koha item type
    Reference BP Central Library BP Central Library Thesis Section 01/10/2018 T780 Thesis (Ph.D/M.Tech R)

Implemented and Maintained by Biju Patnaik Central Library.
For any Suggestions/Query Contact to library or Email: library@nitrkl.ac.in OR bpcl-cir@nitrkl.ac.in. Ph:91+6612462103
Website/OPAC best viewed in Mozilla Browser in 1366X768 Resolution.

Powered by Koha