The GE&EL+ vAC/DC SiC combines a mains source (GE) and electronic load (EL) in a bidirectional, regenerative system. Based on modern SiC MOSFET technology, the device operates with high efficiency (≥ 94 %) and switching frequencies of up to 60 kHz. Thanks to its versatility, it can be used as a precise AC or DC source and load - ideal for dynamic tests, energy recovery and simulation-based test setups in laboratories and industry.
Possible applications
- Electromobility & battery systems: charging/discharging profiles, battery and vehicle emulation
- Renewable energy & PV: inverter tests, PV string emulation, grid behavior under variable load
- Smart grid & grid simulation: Controllable grid impedance, harmonic grid disturbances, P-HiL applications
- Standards & quality assurance: IEC 61000-4-11/-13/-14/-28 pre-compliance tests
- Research & development: variable AC/DC modes, sequence control, data acquisition, multi-channel operation
Model focus: GE&EL+ 50 vAC/DC SiC + ITe. This variant of the 50 kW system is equipped with an external isolation transformer (ITe: "Isolated Transformer external"). This makes the main unit more compact, lighter and easier to integrate - ideal for mobile or space-critical test setups. Compared to the + ITi version (integrated transformer in the cabinet), the + ITe offers more flexible handling, while the electrical performance data remains completely identical.
Technical product features:
- Nominal power: 50 kW, bidirectional, regenerative
- Technology: SiC MOSFETs, switching frequency up to 60 kHz, high dynamics and 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 %
- 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 modes; slew rate up to 4 V/µs (CV) resp. 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 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 or voltage increase
- Protection & safety: Overcurrent, overvoltage, short circuit, interlock, e-stop, watchdog; CE/EMC compliant, RoHS
- Acoustics & cooling: Forced ventilation, quiet operation (< 52 dB(A)), switching frequency outside audible range
- Dimensions/weight (+ ITe): Main unit approx. 770 × 835 × 900 mm (D × W × H), weight approx. 330 kg; external isolation transformer in separate IP20 housing
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