Design and Implementation of a Two-Stage Grid-Connected High Efficiency Power Load Emulator

The need to reduce the time consumption in developing and implementing power converters, and to improve the effectiveness of the test equipment, continues to grow. This trend is further accelerated through the development of electricity-based technology, such as the electric or hybrid vehicle. As th...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2014-08, Vol.29 (8), p.3997-4006
Main Authors: Kanaan, Hadi Y., Caron, Maxime, Al-Haddad, Kamal
Format: Article
Language:English
Subjects:
Active rectifier
Alternative energy
average model
Capacitors
Conversion
dc-to-ac converter
dc-to-dc converter
Design engineering
dual active bridge (DAB)
Electric power
Electric power generation
Electrical engineering
Emulators
harmonic compensation
Integrated circuits
load emulator
Mathematical model
Mathematical models
Multichip modules
Power converters
Power electronics
power factor correction
Prototypes
Rectifiers
Regenerative
renewable energy
soft switching
Test equipment
Topology
Voltage control
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Summary:The need to reduce the time consumption in developing and implementing power converters, and to improve the effectiveness of the test equipment, continues to grow. This trend is further accelerated through the development of electricity-based technology, such as the electric or hybrid vehicle. As the price of energy continues to increase, regenerative test equipment used for validating power converters are gaining importance and attention. This paper focuses on the development of a two-stage regenerative power load emulator. This type of intelligent load requires a connection to the network interface, which, for some applications, should be bidirectional and must possess a galvanic isolation. The development of such grid-connected unit that processes ac-dc conversion is treated in this paper. A 5 kW prototype is used as a base to model, simulate, design, implement, and test such a system. The stability of the interconnection between the two conversion stages is established and tested in real-time applications. The prototype was tested at 180, 220, and 260 V RMS. The measured efficiency is higher than 90%, and the power factor is 0.99 over a wide range of operation.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2013.2295023