| Citation:Zirun Li,Jin Xu,Keyou Wang,Pan Wu,Guojie Li.FPGA-based real-time simulation for EVstation with multiple high-frequencychargers based on C-EMTP algorithm[J].Protection and Control of Modern Power Systems,2020,V5(4):14-24[Copy] |
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| Abstract: |
| The electric vehicle (EV) charging station is a critical part of the infrastructure for the wide adoption of EVs. Real-
time simulation of an EV station plays an essential role in testing its operation under different operating modes.
However, the large numbers of high-frequency power electronic switches contained in EV chargers pose great
challenges for real-time simulation. This paper proposes a compact electromagnetic transient program (C-EMTP)
algorithm for FPGA-based real-time simulation of an EV station with multiple high-frequency chargers. The C-EMTP
algorithm transforms the traditional EMTP algorithm into two parallel sub-tasks only consisting of simple matrix
operations, to fully utilize the high parallelism of FPGA. The simulation time step can be greatly reduced compared
with that of the traditional EMTP algorithm, and so the simulation accuracy for high-frequency power electronics is
improved. The EV chargers can be decoupled with each other and simulated in parallel. A CPU-FPGA-based real-
time simulation platform is developed and the proposed simulation of the EV station is implemented. The control
strategy is simulated in a CPU with 100μs time-step, while the EV station circuit topology is simulated in a single
FPGA with a 250 ns time-step. In the case studies, the EV station consists of a two-level rectifier and five dual-active
bridge (DAB) EV chargers. It is tested under different scenarios, and the real-time simulation results are validated
using PSCAD/EMTDC. |
| Key words: Dual-active bridge (DAB), Electromagnetic transient program (EMTP), Field-programmable gate arrays
(FPGA), EV charger, Real-time simulation |
| DOI：10.1186/s41601-020-00171-x |
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| Fund: |
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