IT7900EP Series High-Performance Feedback Grid Simulator
The IT7900EP series of high-performance regenerative grid simulators provides users with a leading integrated testing solution. The entire series uses silicon carbide (SiC) technology and can be used as a high-power AC power supply, a grid simulator, or a regenerative AC/DC electronic load.
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Electronics and Electrical Engineering
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- Product Description
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- Commodity name: IT7900EP Series High-Performance Feedback Grid Simulator
The IT7900EP series of high-performance regenerative grid simulators provides users with a leading integrated testing solution. The entire series uses silicon carbide (SiC) technology and can be used as a high-power AC power supply, a grid simulator, or a regenerative AC/DC electronic load.
IT7900EP Series High-Performance Regenerative Grid SimulatorThe IT7900EP series high-performance regenerative grid simulator provides users with a leading integrated testing solution. The entire series adopts silicon carbide (SiC) technology and can be used as a high-power AC power supply or a grid simulator. It also functions as a regenerative AC/DC electronic load. Operating in all four quadrants, its high-efficiency regenerative capability allows for clean energy return to the grid, meeting environmental needs while saving on electricity and cooling costs. Its compact, modular, and highly efficient design allows the IT7900EP to deliver 21kVA of power within a 3U form factor. Master-slave parallel connection can expand power to over 1MVA. Using a color touchscreen user interface, different waveforms can be defined directly. The rich operation modes meet the user's needs for single-phase, three-phase, and reverse-phase testing, providing high flexibility for testing and enabling wide application in photovoltaic, energy storage systems, and new energy vehicles.Product Model
Model Voltage Current Power Resolution Accuracy Interface Dimensions 
Key Features
♦ Adopts silicon carbide (SiC) technology
♦ High power density, up to 21kVA in 3U
♦ Voltage up to 350VL-N
♦ Highly efficient energy regeneration
♦ Master-slave current sharing, parallel connection up to 1MVA and above
♦ Built-in extensive waveform database
♦ Supports single-phase/three-phase/reverse-phase/reverse-phase modes, voltage expandable to 200% rated voltage
♦ Supports NORMAL/LIST/SWEEP modes, any mode can be superimposed with Surge & Sag function
♦ Touchscreen design, simple UI interface
♦ Phase angle 0~360° adjustable
♦ Up to 50 harmonic simulation and analysis functions, built-in IEC61000-3-2/3-12 and other test regulations *1
♦ Simulates arbitrary waveform output, supports CSV file waveform import
♦ Built-in USB/CAN/LAN/digital IO, optional GPIB/analog/RS232 interfaces
♦ Multiple protection functions, including automatic clearing protection, instantaneous overvoltage protection POVP, software watchdog, etc.♦ Supports multiple communication protocols such as CANopen, Modbus, LXI, and SCPI
Product Functions and AdvantagesSource Features
♦ Four-quadrant regenerative grid simulator
♦ Frequency: 16~2400Hz *3
♦ Four output modes: AC/DC/AC+DC/DC+AC
♦ Programmable output impedance, simulates power line impedance
♦ Harmonic/interharmonic waveform synthesis
♦ Meets grid code tests such as low-voltage ride-through, phase jump, frequency variation, and harmonic injection
♦ Built-in IEC61000-4-11/4-13/4-14/-17/4-28/4-29 Regulation waveform testing
♦ Optional professional software APS4000 series, quickly completes tests for civil aviation electronics and ship-related standards (MIL-STD-704, DO160, B787…)
Load Features
♦ Four-quadrant regenerative AC/DC electronic load
♦ Frequency: 16-500Hz
♦ AC mode supports multiple operating modes: CC/CP/CR/CS/CC+CR/CE
♦ CE mode simulates 14 types of circuit topologies including single-phase rectifier RLC and parallel RLC
♦ DC mode supports 9 operating modes: CC/CR/CP/CV
♦ AC mode supports both rectifier and non-rectifier modes
♦ Adjustable crest factor: 1.414 ~ 5.0
♦ Supports phase shift function, range -180º~180.0º *6
♦ The unit power factor 1 function allows the current waveform to change with the voltage waveform, making the power factor as close to 1 as possible
♦ Supports load shedding and removal angle control, 0-359° full range adjustable
*1 Voltage/current harmonic analysis, voltage harmonic simulation in source mode, current harmonic simulation in load mode, fundamental frequency ≤60Hz
*3 In grid simulator and island simulation modes, 16~150Hz
*4 After turning on the rectification function, the setting range of the phase shift is constrained by the crest factorSource and Load Integrated
The IT7900EP series integrates three devices. Users can directly select on the instrument panel to use the IT7900EP as a grid simulator with all the functions of a programmable AC power supply, or as a regenerative AC/DC load.
Four-Quadrant Output Characteristics
The IT7900EP series is not only a full four-quadrant power grid simulator, but also a full four-quadrant AC/DC electronic load, capable of operating in all four quadrants. Its excellent bidirectional capability expands the simulation range beyond the two-quadrant limitation of traditional devices. Combined with its highly efficient energy feedback function, it is suitable for testing grid-connected products, such as frequency changes, voltage transients, and anti-islanding tests of grid-connected photovoltaic inverters.
Highly efficient energy regeneration
Whether used as a power grid simulator or a load, the IT7900EP offers highly efficient energy feedback in both AC and DC modes. The energy generated by the device under test during testing can be recovered by the IT7900EP and reused directly in the factory, rather than being consumed as heat, providing users with a "green and energy-saving" solution.
Complete operating modes
Simulate mains power and Low Voltage Ride Through (LVRT) testing
Low Voltage Ride Through (LVRT) refers to the ability of a power generation system to remain connected to the grid and continue operating, even providing reactive power to assist in voltage recovery, when grid faults or disturbances cause voltage dips within a certain range. The IT7900EP series allows editing of LVRT test conditions and, combined with its fast response speed, fully meets LVRT test requirements. Simultaneously, the IT7900EP series features an arbitrary waveform function. In conjunction with the LIST function, various grid disturbance waveforms can be simulated via the panel or the programmable software, such as instantaneous power outages, surges, and slow voltage rise and fall.
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