ITECH IT7900P Series - High Performance Regenerative Grid Simulator

ITECH IT7900P Series – High Performance Regenerative Grid Simulator

The IT7900P series high-performance regenerative grid simulator provides an all-in-one test solution that can be used not only as a grid simulator and four-quadrant power amplifier, but also as a four-quadrant regenerative AC/DC electronic load. The full four-quadrant operation, regenerative ability can feedback power to the grid, meet the needs of environmental protection, but also saves a lot of electricity and heat dissipation costs. Compact, modular and efficient structure design allows the IT7900P up to 15kVA in 3U single unit, and its power can be extended to 960kVA after master-slave parallel connection. Colorful touch screen with intuitive GUI allows IT7900P to directly define different waveforms. The rich operation modes can meet the test requirement of single-phase, three-phase, inverse-phase and multi-channel. It provides high flexibility for testing and can be widely used in many fields such as PV, ESS and EV.

Parameter Features

High power density, up to 6 kVA for 2U and 15 kVA for 3U
Voltage can reach 350V L-N
Master and slave equal flow, parallel machines up to 960kVA ¹
Highly efficient energy return
Comprehensive working modes selectable: single-phase, three-phase, reversed phase and multi-channel, Voltage extension to 200% of rated voltage in inverted mode
Support LIST/SWEEP/Surge&Sag three waveform modes
Harmonic simulation and analysis function up to 50 times ²
Built-in rich waveform database
Can simulate arbitrary waveform output, support CSV file import waveform
Phase angle 0~359°settable
Touch screen design, simple UI interface
Built-in USB/CAN/LXI compliant LAN /Digital IO interface, optional GPIB/analog & RS232 interface
A variety of protection functions, including automatic clearing protection, transient overvoltage protection POVP
Software watchdogs, etc.

Source Features

Regenerative grid simulator & full 4-Quadrant AC&DC power sources
Output frequency: 16-1400Hz
Power Amplifier function for PHiL applications
Professional islanding test mode, support R, L, C and active, reactive power settings
Four output modes of AC/DC/AC+DC/DC+AC can be realized
Multi-channel function, single unit can test 1-3 DUTs at the same time ³
Programmable output impedance, simulation of real-world impedance
Harmonic/inter harmonic synthesis
Frequency lock and phase lock function to achieve 6 phase& 12 phase power output
Compliance tests incl. LVRT (Low Voltage Ride Through)/HVRT (High Voltage Ride Through)/Phase Jump/Frequency variation/harmonic injection
Supported regulatory testing include IEC61000-4-11/4-13/4-14/4-28 etc.
Provide rich trigger configuration, synchronous capture of the voltage waveform of the object to be measured, to achieve data acquisition and simulation functions

Load Features

Regenerative full 4-Quadrant AC&DC load
Output frequency: 16-500Hz
AC mode supports CC/CP/CR/CS/CC+CR/CE multiple operating modes, and CE mode can simulate a variety of circuit topologies such as single-phase rectifier RLC and shunt RLC.
DC mode supports 9 working modes such as 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~180.0º ⁴
When the three-phase AC, support Y and Δ two kinds of access, Y type connection when the support C-phase phase loss function
Support with load-on
Support positive or negative half-cycle pull load
The unit power factor1 function allows the current waveform to vary with the voltage waveform and the power factor is as close to 1 as possible

3U model only
Voltage/current harmonic analysis, voltage harmonic simulation in source mode, current harmonic simulation in load mode
Multi-channel function is not available for single-phase models
When rectification function is turned on, the setting range of phase shift is bounded by the peak 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.