A Real Time Simulator of a Phase Shifted Converter for High Frequency Applications

This paper presents a switched function FPGA-based Real Time Simulator (RTS) of a synchronous Phase Shifted (PS) converter. The design methods developed contribute to improving the accuracy, the portability, to lowering the cost and the resource demand of RTS models, enabling them to be easily deplo...

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Bibliographic Details
Published inAdvances in Electrical and Computer Engineering Vol. 20; no. 3; pp. 11 - 22
Main Authors GHERMAN, T., PETREUS, D., CIRSTEA, M. N.
Format Journal Article
LanguageEnglish
Published Suceava Stefan cel Mare University of Suceava 01.08.2020
Subjects
Batteries
Behavior
closed loop systems
Closed loops
Comparative analysis
Computer simulation
Converters
dc-dc power converters
Design techniques
Embedded systems
Error detection
Field programmable gate arrays
Frequency response
Hardware-in-the-loop simulation
high level synthesis
Industrial equipment
Programmable logic arrays
Real time
real-time systems
Semiconductor industry
Simulation
Software
Topology
Voltage converters (DC to DC)
United States
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Summary:This paper presents a switched function FPGA-based Real Time Simulator (RTS) of a synchronous Phase Shifted (PS) converter. The design methods developed contribute to improving the accuracy, the portability, to lowering the cost and the resource demand of RTS models, enabling them to be easily deployed both in hardware in the loop (HIL) simulations, but also in error detection or health monitoring systems where these properties are essential. The research work carried out demonstrates the importance of reducing the simulation time step for avoiding false limit cycling behavior and obtaining an accurate closed loop response of the RTS. The very small time step (20 ns), not achievable with commercial real time simulation tools, helped in accurately modeling the time and frequency response of the converter for switching frequencies of 200 kHz (tested) and above. Although applied to a particular type of DC-DC converter, the methods presented can be used to successfully model a wide range of Switched Mode Power Supply (SMPS) topologies. An innovative hardware platform that enables running the real time simulation model in parallel with the reference converter and facilitates a comparative analysis that proves the fidelity of the RTS of the PS converter was also developed. Keywords--real-time systems, closed loop systems, field programmable gate arrays, high level synthesis, DC-DC power converters.
ISSN:1582-7445
1844-7600
DOI:10.4316/AECE.2020.03002