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Fast time domain simulation of generic resonant mode power converter: mapping the stability region

Fast time domain simulation of generic resonant mode power converter: mapping the stability region
Fast time domain simulation of generic resonant mode power converter: mapping the stability region
A macromodelling technique for generic resonant mode power converters is described. This technique enables the transient and frequency analyses of resonant converters, embedded in their control circuitry, to be carried out some three orders of magnitude faster than by full component level circuit simulation. This formidable increase in speed enables us to treat 'an analysis' as a primitive operation, and allows us to explore more complex interactions of an entire system. The paper describes the technique, and demonstrates the power of the idea with a much higher level analysis: a resonant mode converter controlled by a feedback system, driving a complex load. Like any physical system of this nature, there are combinations of system parameters that can cause overall instability (oscillation). In a power conversion environment, this can be extremely dangerous. The example shown uses a three component load (R,L,C), and generates the 'stability surface' in (R,L,C) space that separates the stable from the unstable regions of overall operation. This is taken further, to demonstrate that the volume of 'component space' enclosed by the stability surface decreases monotonically with increasing system phase margin.
Brown, A.D.
5c19e523-65ec-499b-9e7c-91522017d7e0
Wong, S.C.
e34ebabc-b3ca-43b6-8778-cd620a6d0575
Williams, A.C.
4c566cf2-8942-410b-9741-eb4a90f7125f
Kazmierski, T.J.
a97d7958-40c3-413f-924d-84545216092a
Brown, A.D.
5c19e523-65ec-499b-9e7c-91522017d7e0
Wong, S.C.
e34ebabc-b3ca-43b6-8778-cd620a6d0575
Williams, A.C.
4c566cf2-8942-410b-9741-eb4a90f7125f
Kazmierski, T.J.
a97d7958-40c3-413f-924d-84545216092a

Brown, A.D., Wong, S.C., Williams, A.C. and Kazmierski, T.J. (2000) Fast time domain simulation of generic resonant mode power converter: mapping the stability region.

Record type: Other

Abstract

A macromodelling technique for generic resonant mode power converters is described. This technique enables the transient and frequency analyses of resonant converters, embedded in their control circuitry, to be carried out some three orders of magnitude faster than by full component level circuit simulation. This formidable increase in speed enables us to treat 'an analysis' as a primitive operation, and allows us to explore more complex interactions of an entire system. The paper describes the technique, and demonstrates the power of the idea with a much higher level analysis: a resonant mode converter controlled by a feedback system, driving a complex load. Like any physical system of this nature, there are combinations of system parameters that can cause overall instability (oscillation). In a power conversion environment, this can be extremely dangerous. The example shown uses a three component load (R,L,C), and generates the 'stability surface' in (R,L,C) space that separates the stable from the unstable regions of overall operation. This is taken further, to demonstrate that the volume of 'component space' enclosed by the stability surface decreases monotonically with increasing system phase margin.

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More information

Published date: August 2000
Organisations: EEE

Identifiers

Local EPrints ID: 253816
URI: http://eprints.soton.ac.uk/id/eprint/253816
PURE UUID: a261d927-ceee-4e06-834b-f395a4ff53d4

Catalogue record

Date deposited: 06 Oct 2000
Last modified: 16 Nov 2022 17:36

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Contributors

Author: A.D. Brown
Author: S.C. Wong
Author: A.C. Williams
Author: T.J. Kazmierski

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