Zero-Energy Sag Corrector With Reduced Device Count

Voltage sags are the leading cause of unscheduled downtime in industrial plants with high levels of automation. Zero-energy sag correctors (ZESCs) that utilize energy from those phases that have sufficient remaining voltage on them promise levels of protection that are comparable with conventional e...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2009-06, Vol.24 (6), p.1646-1653
Main Authors: Prasai, A., Divan, D.M.
Format: Article
Language:English
Subjects:
AC-AC boost
Applied sciences
Automation
Circuit design
Circuit topology
Circuits
Counting
Design. Technologies. Operation analysis. Testing
Devices
Direct energy conversion and energy accumulation
Electric power
Electrical engineering. Electrical power engineering
Electrical power engineering
Electronics
Energy accumulation
Energy storage
Exact sciences and technology
Industrial plants
Integrated circuits
Packages
Packaging
power disturbance statistics
Power electronics, power supplies
Power quality
Protection
Sag
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Switching converters
Transformers
Transformers and inductors
Voltage
voltage sags
zero-energy sag corrector
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Summary:Voltage sags are the leading cause of unscheduled downtime in industrial plants with high levels of automation. Zero-energy sag correctors (ZESCs) that utilize energy from those phases that have sufficient remaining voltage on them promise levels of protection that are comparable with conventional energy storage based sag correctors, but in a more compact package. This paper presents a ZESC topology with reduced device count using readily available device packages that can realize similar performance as the original ZESC circuit. The proposed ZESC behaves like a ldquothin AC converter,rdquo and can be integrated with existing assets such as transformers and switchgears. This paper presents details of the operation, design, and experimental results for such a ZESC circuit.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2009.2015319