scholarly journals Real Time Simulation of Power Electronics Medium Voltage DC-Grid Simulator

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7368
Author(s):  
Piotr Sobanski ◽  
Milosz Miskiewicz ◽  
Grzegorz Bujak ◽  
Marcin Szlosek ◽  
Nikolaos Oikonomou ◽  
...  
Keyword(s):  
Power Electronics ◽  
Power Converter ◽  
General Idea ◽  
Modulation Method ◽  
Medium Voltage ◽  
Electrical Systems ◽  
Voltage Quality ◽  
Time Simulation ◽  
Grid Codes ◽  
Power Capability

Power electronics medium-voltage (MV) systems must comply with the requirements defined in grid codes. These systems’ compatibility with the standards can be validated by specialized testing equipment: grid simulators. This paper presents a hardware in the loop (HiL) implementation and the simulation results of a MV multiphase DC/DC converter designed for MV DC grid emulation. By using ABB’s reliable, patented power converter hardware topology (US 10978948 B2) and by applying advanced control algorithms, the presented system can be used for special purposes, such as the emulation of fault events in a DC-grid used for the certification of other devices, or for other research goals. The presented concept of a power electronics DC-grid simulator (PEGS-DC) is characterized by high power capability and high voltage quality. In this paper, the general idea of a power electronics grid simulator applied for the testing of MV electrical systems is discussed. Then, details related to the PEGS-DC, such as its hardware topology and the applied modulation method are presented. Subsequently, the HiL setup is described. The main scope of this article focuses on model the description and presenting recorded HiL simulations.

scholarly journals A GaN-HEMT Compact Model Including Dynamic RDSon Effect for Power Electronics Converters

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2092
Author(s):  
Ke Li ◽  
Paul Leonard Evans ◽  
Christopher Mark Johnson ◽  
Arnaud Videt ◽  
Nadir Idir
Keyword(s):  
Power Electronics ◽  
Physical Model ◽  
Order Reduction ◽  
Power Converter ◽  
Compact Model ◽  
Voltage Source ◽  
Power Losses ◽  
Gan Hemt ◽  
Operation Conditions ◽  
Power Electronics Converters

In order to model GaN-HEMT switching transients and determine power losses, a compact model including dynamic RDSon effect is proposed herein. The model includes mathematical equations to represent device static and capacitance-voltage characteristics, and a behavioural voltage source, which includes multiple RC units to represent different time constants for trapping and detrapping effect from 100 ns to 100 s range. All the required parameters in the model can be obtained by fitting method using a datasheet or experimental characterisation results. The model is then implemented into our developed virtual prototyping software, where the device compact model is co-simulated with a parasitic inductance physical model to obtain the switching waveform. As model order reduction is applied in our software to resolve physical model, the device switching current and voltage waveform can be obtained in the range of minutes. By comparison with experimental measurements, the model is validated to accurately represent device switching transients as well as their spectrum in frequency domain until 100 MHz. In terms of dynamic RDSon value, the mismatch between the model and experimental results is within 10% under different power converter operation conditions in terms of switching frequencies and duty cycles, so designers can use this model to accurately obtain GaN-HEMT power losses due to trapping and detrapping effects for power electronics converters.

Losses in Medium-Voltage Megawatt-Rated Direct AC/AC Power Electronics Converters

2015 ◽  
Vol 30 (7) ◽  
pp. 3553-3562 ◽  
Author(s):  
Rohit Moghe ◽  
Rajendra P. Kandula ◽  
Amrit Iyer ◽  
Deepak Divan
Keyword(s):  
Power Electronics ◽  
Medium Voltage ◽  
Power Electronics Converters ◽  
Ac Power

(Invited) Vertical Gallium Nitride PN Diodes for Grid Resiliency and Medium-Voltage Power Electronics

2021 ◽  
Vol MA2021-02 (32) ◽  
pp. 958-958
Author(s):  
Robert J. Kaplar ◽  
Andrew A. Allerman ◽  
Mary H. Crawford ◽  
Brendan P. Gunning ◽  
Jack D. Flicker ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Power Electronics ◽  
Medium Voltage

scholarly journals Modeling and Real-Time Simulation of Induction Motor Using RT-LAB

2018 ◽  
Vol 9 (4) ◽  
pp. 1476
Author(s):  
A. Hamed ◽  
A. Hazzab
Keyword(s):  
Real Time ◽  
Induction Motor ◽  
Motor System ◽  
Parallel Simulation ◽  
Simulation Software ◽  
Electric Circuits ◽  
Real Time Simulation ◽  
Electrical Systems ◽  
Time Simulation

<span lang="EN-US">This paper presents the modeling and real-time simulation of an induction motor. The RT- LAB simulation software enables the parallel simulation of power drives and electric circuits on clusters of a PC running QNX or RT- Linux operating systems at sample time below 10 µs. Using standard Simulink models including SimPowerSystems models, RT-LAB build computation and communication tasks are necessary to make parallel simulation of electrical systems. The code generated by the Real-Time Workshop of RT- LAB is linked to the OP5600 digital real-time simulator. A case study example of real-time simulation of an induction motor system is presented.This paper discusses methods to overcome the challenges of real-time simulation of an induction motor system synchronizing with a real-time clock.</span>

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