EL+ vAC
Regenerative AC Electronic Load
EL+ vAC Regenerative AC Electronic Load
EL+ vAC is a 4Q programmable AC Current Source designed to emulate the electrical behaviour of passive and active devices connected to the grid. In addition, its grid stage as an Active Rectifier produces clean sinusoidal currents with very low harmonic distortion. This cost-efficient solution is specially suitable for testing AC sources, Applications for Industry and Education, Smart grids, Aeronautic, UPS and EV Charging Infrastructure. Its Regenerative and Bidirectional Hardware allows a reduction in the total power and energy needed for the test.
Featured Benefits
- Efficiency and Flexibility
- Save Energy, Power and Time
- AC only
- Smartgrids & Electrical Vehicles
- High-Resolution and Dynamics
Functionalities
- Bidirectional and Regenerative
- Clean grid current: THDi < 3% and PF > 0.98
- 13 models from 7.5kW to 160kW
- Parallelization of units to increase the power
- Emulation of grid-connected devices:
- Loads absorbing energy from grid
- Generators injecting energy to the grid
- Programmable Active/Reactive consumption
- Non-linear currents up to CF of 3
- Independent phase configuration of: rms current, phase angle, harmonics, interharmonics, generation of fast transients (“Current Dips”)
- Intuitive User Interface
- Modbus/Ethernet Open protocol, Labview drivers
Main Applications
Electromobility
Smart Grids
Avionics
Academical & Industrial Test
Local Interface
Analogue and Digital IO ports
The isolated digital and analogue inputs/outputs permit the connection of the unit to External Controllers and Power Hardware in the Loop systems (option).
4.3” Touchscreen
Allows the local parameterization and command of the device, configuration of the communications link, plots the main signals and enables the local datalogging.
Safety First
The units integrate a local Emergency Stop pushbutton and two signals (input+ output) to be connected to the laboratory interlock system. Additionally, the digital outputs can be interfaced to safety tower lights.
Master/Slave
ePLUS is a modular platform enabling the master/slave connection of units with equal power.
Options
Choose your options:
- Galvanic Isolation
- Three channel mode: allows different operation mode start/stop/reset per channel (included in all models from 7.5 to 60, both included)
- 30kHz Switching Frequency: only available for models 15 (derated to 7.5kW), 20 (derated to 7.5kW) and 30 (derated to 10kW)
- Isolation monitor (advised far IT systems)
- Low current ripple inductance (included in all models ≤54kW. optional far models ≥80kW)
- High Frequency 360 – 900Hz
- Anti-islanding monitor (only advised in net injection to the grid and following local regulations)
- High Voltage (HV): voltage up to 295Vrms phase-neutral in AC up to 800V in DC
- RS485
Models
| Reference | AC Power Rated | AC Current Rated (3 channels / 1 channel) | DC Power Rated | DC Current Rated (3 channels / 1 channel) | Weight (kg) | Dimensions DxWxH (mm) |
|---|---|---|---|---|---|---|
| EL+7.5 vAC | 7.5 kW | 11 A / 33 A | - | - | 155 kg | 770 x 450 x 1100 mm |
| EL+10 vAC | 10 kW | 15 A / 45 A | - | - | 155 kg | 770 x 450 x 1100 mm |
| EL+15 vAC | 15 kW | 22 A / 66 A | - | - | 155 kg | 770 x 450 x 1100 mm |
| EL+20 vAC | 20 kW | 29 A / 87 A | - | - | 155 kg | 770 x 450 x 1100 mm |
| EL+30 vAC | 27 kW | 40 A / 120 A | - | - | 155 kg | 770 x 450 x 1100 mm |
| EL+40 vAC | 40 kW | 58 A / 174 A | - | - | 200 kg | 770 x 450 x 1100 mm |
| EL+50 vAC | 50 kW | 73 A / 219 A | - | - | 200 kg | 770 x 450 x 1100 mm |
| EL+60 vAC | 54 kW | 80 A / 240 A | - | - | 200 kg | 770 x 450 x 1100 mm |
| EL+80 vAC | 80 kW | 116 A / - | - | - | 400 kg | 870 x 875 x 1320 mm |
| EL+100 vAC | 100 kW | 143 A / - | - | - | 400 kg | 870 x 875 x 1320 mm |
| EL+120 vAC | 108 kW | 157 A / - | - | - | 400 kg | 870 x 875 x 1320 mm |
| EL+160 vAC | 145 kW | 211 A / - | - | - | 680 kg | 850 x 900 x 2000 mm |
| EL+200 vAC | 160 kW | 232 A / - | - | - | 680 kg | 850 x 900 x 2000 mm |
Software
The user interface used by CINERGIA devices has been developed by our R&D team, to offer total control of the device, with a comfortable and intuitive design. This allows us to take full advantage of the capabilities of the device, as well as the programming and execution of standardized or self-created tests.
EL Modes
AC Operation
From this panel, the user can set all AC parameters. Each phase can be independently configured: RMS current magnitude, phase delay, harmonics content, free-frequency harmonic and transition ramps. A plot shows the expected real-time waveform, the FFT representation and the numeric data: RMS, peak, CF and THD.
Harmonics
The device can control simultaneously the magnitude of the first 15 harmonics and one free harmonic per phase. The free one allows the generation of sub-harmonics, inter-harmonics and high frequency harmonics up to the 50th, setting both the magnitude and phase delay.
Power and Impedance Control
In Power mode, the active and reactive power of each phase is independently controlled. In Impedance mode, the device emulates an RLC load allowing to parameterize resistance, inductance and capacitance per phase making this device suitable for Anti-Islanding test of grid converters.
AC
Steps Mode
One of the most remarkable novelties of the new software is the steps functionality. Step test files are saved and executed by the DSP allowing deterministic timing with a resolution of 66µs. The user gains access to all registers of the device to create complex test sequences which run directly in the converter without the need of an external computer.
Disturbance Generation
The steps mode includes predefined easy-to-use test panels. The AC faults panel is a powerful yet intuitive editor which allows generating and configuring flicker. Specific profiles can be saved in .csv files, modified, and reused by importing an existing one.
Linear & Non-Linear
The capacity to emulate linear and non-linear loads in one of the main features of the 4Q Electronic Load. Through our intuitive control software, the magnitude of harmonics can be set and different types of loads can be generated.
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FAQ
The EL+ vAC is a programmable, regenerative AC electronic load designed to test and evaluate AC power sources, UPS systems, inverters, and other AC power devices by absorbing power from the Device Under Test (DUT) and regenerating it back to the grid.
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