The GE&EL+ vAC/DC SiC combines a mains source (GE) and electronic load (EL) in a bidirectional, regenerative device. Thanks to modern SiC MOSFET technology, the system switches at up to 60 kHz, operates highly efficiently (≥ 94 %) and offers a wide bandwidth for precise, dynamic test sequences. Whether as an AC source/load with harmonic superposition up to 5 kHz or as a powerful DC source/sink with multichannel operation - this "all-terrain" system covers a wide range of tests.
Possible applications
- Electromobility & battery systems: charging/discharging, cyclization, battery emulation
- Renewable energies & PV: PV panel emulation, inverter tests incl. Anti-islanding
- Smart grids & Power-Hardware-in-the-Loop (P-HiL): fast transients, extended bandwidth
- IEC pre-compliance: e.g. IEC 61000-4-11/-13/-14/-28
- Academic & industrial test benches: flexible AC/DC operating modes, step sequencer, data logger
Model focus: GE&EL+ 50 vAC/DC SiC + ITi. This 50 kW variant integrates an isolation transformer directly in the control cabinet (ITi) - ideal when galvanic isolation is required in the device. Compared to its sister model + ITe (transformer in separate IP20 outer housing, more compact main unit), the + ITi version offers a fully integrated, cabinet-based layout and therefore a particularly clean installation with a slightly larger footprint and higher weight.
Technical product features:
- Nominal power: 50 kW, bidirectional, regenerative
- Technology: SiC MOSFETs, switching frequency up to 60 kHz, high dynamic range/bandwidth
- Mains connection (input): 3 × 400 Vrms + N + PE, 48-62 Hz, THDi < 3 % (at Prated), power factor > 0.98
- AC output (GE mode): 0-295 Vrms Ph-N (510 Vrms Ph-Ph), fundamental frequency 10-1000 Hz, up to 50. Harmonics (up to 5 kHz), THDv from < 0.08 % (linear)
- EL-AC (current/power/impedance load): programmable CC/CP/CZ operation, cos φ from -90° to +90°, transients < 100 µs (model 50)
- DC output: CV 20-800 V (2Q) resp. ±350 V (4Q bipolar); CC/CP/CR operation; slew rate up to 4 V/µs (CV) or 1 A/µs (CC)
- Nominal currents (model 50): AC: 73 A (3-channel) / 219 A (1-channel); DC: ±73 A (3-channel) / ±219 A (1-channel)
- Efficiency & ripple: Peak efficiency ≥ 94 %, voltage/current ripple typ. < 0.35 % FS
- Harmonic & bandwidth: up to 50 free/fixed harmonics per phase, small-signal bandwidth up to 5 kHz
- Control & software: Steps-Sequencer (up to 99 commands, 66 µs timing), P-HiL (typ. 150 µs input/output delay), Windows GUI, Modbus TCP
- Multi-channel DC: 3 unipolar channels (2Q) with separate start/stop/setpoint; optional multichannel from ≥ 80 kVA
- Master/slave: parallel connection in AC; in DC parallel/serial/serial-parallel for power/voltage increase
- Protection & safety: overcurrent/overload/overvoltage, short circuit, interlock/E-stop, watchdog; CE/EMV according to EN standards, RoHS
- Acoustics & cooling: forced ventilation; switching sound outside audible range, typ. < 52 dB(A) for model size
- Dimensions/weight (+ ITi): approx. 770 × 835 × 1100 mm (D × W × H); approx. 395 kg; insulation transformer integrated in the cabinet
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