Modelling of Z and Quasi Z- Source DC-DC Converters for Variable Frequency Operation (Record no. 14681)
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000 -LEADER | |
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fixed length control field | 02849nam a22001937a 4500 |
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
Classification number | 621.3 |
Item number | K114M |
100 ## - MAIN ENTRY--AUTHOR NAME | |
Personal name | Kachhwaha, Mohit |
245 ## - TITLE STATEMENT | |
Title | Modelling of Z and Quasi Z- Source DC-DC Converters for Variable Frequency Operation |
Statement of responsibility, etc | by Mohit Kachhwaha |
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
Place of publication | IIT Jodhpur |
Name of publisher | Department of Electrical Engineering |
Year of publication | 2017 |
300 ## - PHYSICAL DESCRIPTION | |
Number of Pages | xi,38p. |
Other physical details | HB |
520 ## - SUMMARY, ETC. | |
Summary, etc | "The impedance source network, proposed in the year 2002, nsists of a unique combination of<br/>two inductors and two capacitors. This network has proven its expediency over the conventional<br/>voltage source and current source networks as an efficient mean of power conversion in a wide<br/>spectrum of electric power applications. These converters, conventionally, are operated at an optimized fixed frequency. However, an<br/>optimized switching frequency may achieve its maximum efficiency only under the given set of<br/>operating conditions whilst under different operating conditions there is actually a degradation of<br/>conversion efficiency. Therefore, in an attempt to cater to energy conformity demands, to maintain<br/>constant efficiency over the entire load range, an alteration is required in the switching frequency<br/>based on the current status of the system. In this thesis, the domain of these impedance source networks is explored for variable frequency<br/>operations. The work deals with two topologies of impedance source networks, viz., traditional<br/>Z source network and quasi Z source network. Complete circuit analysis is carried out for both<br/>topologies and system models are obtained for the different modes of operation. Instead of commonly<br/>used approach of state-space averaging, an enhanced model of the converters is presented<br/>for variable frequency operation. These proposed models are achieved by considering the on-time<br/>and the off-time of the switching period as separate control variables for state-space averaging. The<br/>obtained ac small signal models are then subjected to simulation and experimentation to clearly<br/>demonstrate and confirm the accuracy of the proposal. This enhanced model, for the widely acclaimed impedance source networks, captures the dynamics<br/>of the power conversion system under variable frequency operation. The adopted averaging<br/>method is a flexible approach, wherein, responses to a constant on-time, constant off-time as<br/>well as a varying on-time and off-time can be studied. These accurate models would help to fully<br/>exploit the switching period modulation in terms of transient performance and to ensure stability<br/>in all operating conditions.<br/>i"<br/> |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical Term | Quasi Z- Source |
Topical Term | DC-DC Converters |
Topical Term | Variable Frequency Operation |
Topical Term | MTech Theses |
Topical Term | Department of Electrical Engineering |
700 ## - ADDED ENTRY--PERSONAL NAME | |
Personal name | Fulwani, Deepak |
942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
Koha item type | Thesis |
Withdrawn status | Lost status | Damaged status | Not for loan | Collection code | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Accession Number | Price effective from | Koha item type |
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Not For Loan | Reference | S. R. Ranganathan Learning Hub | S. R. Ranganathan Learning Hub | Course Reserve | 2024-01-18 | 621.3 K114M | TM00104 | 2024-01-18 | Thesis |