This thesis presents the design and development of the AHF, and the application of CAD in switching converters. The presentation begins by a review of previous work in AHF with special emphasis on its design principles. This is followed by a discussion and implementation of the CAD tools---CASA a control system software package and real time computer simulation. The former implements a novel approach toward the control loop stability analysis of switching converters. Essentially it employs the Block Diagram Technique to describe the circuit configuration allowing Active Compensation Technique (ACT) to be carried out. Real time simulation allows the investigation of the AHF transient behaviour in response to step changes in line voltage and load. A fast algorithm has been introduced that results in a tremendous reduction in simulation time. These CAD approaches were used to assist in the design and evaluation of the performance of AHF design. The final part of the thesis describes the development of a 400 and 600W prototypes which were designed with high specification. The process of the design is outlined in detail and the prototypes were implemented to a 400W output SMPS and a 288W UPS. The 400W SMPS was tested with and without the AHF. Comparison of these test results is included.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:292693 |
| Date | January 1991 |
| Creators | Lee, Kuok-Wei |
| Publisher | University of Aberdeen |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU032153 |
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