Where the methods get tested
A proposed method is demonstrated with experimental results, at laboratory scale at minimum. The lab is in the Renewable Energy Research Building (C10) on the GIST campus: study room 315, meeting room 316, and the experiment room 318.
Experiment room, 318 — Grid-connected inverter benches, an ESS cabinet, and a machine test rig. Power conversion up to 32.9 kW can be handled here.
Machine test area — Two motor–generator sets are available for experiments on electric machine drives.
Study room, 315 — Each member is given a desk with a PC and two monitors. MATLAB, PLECS, Altium, ORCAD, Ansys EM & HF, Vivado, and Mathematica are licensed.
Bench and instrument area — Board assembly, rework, and measurement alongside the study space. A separate meeting room, 316, holds a personal cabinet for each member and an all-in-one PC for remote sessions into 315 or the laboratory.
Hardware-in-the-loop simulation — OPAL-RT and Speedgoat real-time simulators. A controller is verified against a virtual inverter and plant before it meets real power.
Paralleled inverter test bench — Two-level converters in parallel through a transformer for circulating-current and synchronisation studies.
Equipment
| Instrument | Model |
|---|---|
| OPAL-RT real-time simulator | OP5030, OP5607 |
| Speedgoat real-time simulator | Performance Target Machine, RJ45, IO334 IO module |
| Power analyzer | Yokogawa WT1806E |
| Oscilloscope | LeCroy HDO6054A, WaveRunner 8058HD |
| Probes | LeCroy HVD3106A, CP150 |
| Oscilloscope | Rohde & Schwarz RTE1054 |
| Probes | Rohde & Schwarz RT-ZD01, RT-ZC10B |
| Infrared camera | FLIR E75 with SC kit |
| DC power supply | Ametek SGI 600/33 |
| AC power supply | Chroma 61830, 30 kVA |
| Slide AC | 30 kVA, 5–380 V, 60 Hz |
Measurement
Power analyzer, oscilloscopes, and high-voltage and current probes. A 20 kW DC supply and a 30 kW AC source feed the benches.