Regenerative 4-Quadrant AC Grid Simulator
The IT7900 series (ITECH IT7945-350-270) represent the newest generation of programmable, full four-quadrant grid simulators with full 100% of current rating in both source and sink mode, and provides energy recovery capability. The power generated by the DUT during the test can be easily fed back to the AC grid, rather than being dissipated as heat,which protects the environment and lowers the cost of operation. It can be applied to the applications in testing grid-tied products that inject energy into the grid, such as the frequency changes, voltage transients and DC injection of grid-tied/off-grid inverters testing.
Full 4-Quadrant Power Amplifier
The IT7900 series (ITECH IT7945-350-270) regenerative grid simulator can be used as a power amplifier to complete power hardware in the loop (PHIL) applications for microgrids, energy storage and new energy vehicles. The digital I/O or a standard suite of analog signal can be input via an external analog interface (optional) and then amplified without distortion to a real power waveshape with an external analog response time of less than 200us.
Professional Anti-islanding Test Mode
To meet the certification test of anti-islanding effect for grid-tied products, the IT7900 series (ITECH IT7945-350-270) provide a professional anit-islanding test mode. Users can adjust RLC parameters or configure the parameters of active power and reactive power to achieve the effect of simulating purely resistive or nonlinear grid loads, and further verify the anti-islanding protection response time of grid-tied DUTs under different equivalent impedances, three-phase load balancing and non-balancing conditions. The solution helps engineers to simplify the test circuit and cost savings of additional equipment such as oscilloscopes and power meters.
Key Features:
- High power density/minimum rack space, 3U up to 15kVA,16Hz~150Hz
- Solutions up to 960 kVA available
- Regenerative grid simulator & full 4-Quadrant AC&DC power sources
- Power Amplifier function for PHiL applications
- Professional anti-islanding test mode, can set and simulate the RLC (resistive-inductive-capacitive), active and reactive power circuit for anti-islanding detection
- CC/CV/CP modes
- AC, DC, AC+DC or DC+AC output capability
- Comprehensive working modes selectable: single-phase, three-phase, reversed phase and multi-channel
- Programmable Output Impedance, allows simulation of Real-World Utility Grid Impedance
- Compliance tests incl LVRT /Phase Jump/Frequency variation/Harmonic Injection
- Supported regulatory testing include IEC61000-4-11/4-13/4-14/4-28 and other
Key Specifications:
- Wide voltage ranges: 350V L-N and 500V L-N
- Master-slave parallel with current sharing technology, up to 960kVA
- Intuitive touch screen
- Built-in single/3-phase AC power meter
- Scope function
- Fast response time and high accuracy 0.1%+0.2%FS
- Waveforms Library :
- Sine wave, Square wave,Triangle wave,Clipped sine waves,Staircase wave, self-defined waves
- Harmonics and Interharmonics waveform synthesizer
- Power line disturbance simulation testing by LIST programming/SWEE/Surge & Sag functions
- Harmonic measurement function measures 50th order harmonics of voltage and current
- Output 0-360 ° start/stop phase angle can be set
- Front panel USB port for data and waveform import and export
- Provides trigger input/output signals.
- When amplitude/frequency changes, trigger signals can be generated to synchronously capture the current waveform of DUTs
- Relay CTRL function, to cut off the connection between instrument and DUT
- Frequency lock and phase lock function, tracking the external signal frequency and phase, to achieve 6 phase and12 phase power output
- Built-in USB/CAN/LAN/Digital IO interface, optional GPIB/Analog and RS232
