When the user sets the operation mode to Voltage Source mode in the system
menu, the instrument is a four-quadrant grid simulator. This chapter describes
the functions and features of the instrument in Source mode.
5.1 full 4-Quadrant output character
The IT7900P series 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 retuned 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.
The relationship between output voltage, current, power and frequency is shown
in the figure below.
5.2 Select the Power Supply Mode
The IT7900P series provides multiple modes such as single-phase, three-phase,
Chapter5 Source Mode Operation
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Source Mode Operation
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