ITECH IT7900EP Series - High Performance Regenerative Grid Simulator

ITECH IT7900EP Series – High Performance Regenerative Grid Simulator

With the adoption of advanced SiC technology, the IT7900EP series high-performance regenerative grid simulator offers a comprehensive test solution. This versatile device functions not only as a grid simulator and four-quadrant power amplifier but also as a four-quadrant regenerative AC/DC electronic load. Its full four-quadrant operation and regenerative capability enable power feedback to the grid, promoting environmental sustainability and significantly reducing electricity and heat dissipation costs.

Designed with a compact, modular, and efficient structure, the IT7900EP delivers up to 21kVA in a 3U single unit, and its power can be extended to 1MVA through master-slave parallel connection. The colorful touch screen with an intuitive GUI allows users to directly define various waveforms. The simulator supports a wide range of operational modes, accommodating single-phase, three-phase, and reverse-phase testing requirements. This high flexibility makes it suitable for applications in PV, ESS, and EV industries.

Parameter Features

Adopt advanced SiC technology
High power density, up to 21 kVA for 3U
Voltage can reach 350V L-N
Highly efficient power regeneration
Master and slave equal flow, parallel machines up to 1MVA
Comprehensive working modes selectable: single-phase, three-phase, reversed phase, and multi-channel; voltage extension to 200% of rated voltage in reversed mode
Support LIST/SWEEP/Surge&Sag three waveform modes
Built-in rich waveform database
Harmonic simulation and analysis function up to 50 times, built-in IEC61000-3-2/3-12 compliance
Can simulate arbitrary waveform output, support CSV file import waveform
Phase angle 0-360° settable
Touch screen design, simple UI interface
Built-in USB/CAN/LAN/Digital IO interface, optional GPIB/analog & RS232 interface
Full protection functions including automatic clearing, POVP, watchdog, etc. Support CANopen, Modbus, LXI, SCPI communication

Source Features

Regenerative grid simulator & full 4-quadrant AC & DC power sources
Frequency: 16-2400Hz
Power amplifier function for PHIL applications
Four output modes: AC/DC, AC+DC, DC+AC
Programmable output impedance, simulation of real-world impedance
Harmonic/inter-harmonic synthesis
Compliance tests including LVRT, Phase Jump, Frequency Variation, harmonic injection
Supported regulatory testing includes IEC61000-4-11/4-13/4-14/4-28
Optional software to complete pre-compliance standards testing for civil avionics/electrical ships according to multinational safety regulations

Load Features

Regenerative full 4-quadrant AC & DC load
Frequency: 16-500Hz
AC mode supports CC/CP/CR/CS/CC+CR/CE multiple operating modes, and CE mode can simulate various circuit topologies such as single-phase rectifier RLC and shunt RLC
DC mode supports 9 working modes including CC/CR/CP/CV
AC mode supports both rectified and non-rectified modes
Adjustable crest factor: 1.414 ~ 5.0
Support phase shift function in the range of -180º ~ 180º
The unit power factor function allows the current waveform to vary with the voltage waveform, making the power factor as close to 1 as possible
Supporting unloading angle control, 0-359° adjustable

*Notes:*

Voltage/current harmonic analysis, voltage harmonic simulation in source mode, current harmonic simulation in load mode, fundamental wave ≤ 60Hz
Stay tuned
In grid simulator and islanding simulation mode, 16-150Hz
After turning on the rectification function, the setting range of the phase shift is restricted by the crest factor

Testing Capabilities

Power Hardware-in-the-Loop (PHiL) for Testing and Verification of Grid-Tied DUT

ITECH modular and scalable IT7900(P) support built-in power amplifier mode for Power Hardware in the Loop (PHIL) applications providing further testing and simulation capability.

The lately upgraded analog interface card IT-E177 for HIL application bandwidth reaches 2.4kHz; IT7900(P) Power Amplifier mode for PHIL application with low latency at 65μs , rising/fall high speed up to 2.5V/μs,which helps simulate real-world conditions.