GE+ ACDC Installation and operation manual v11
7 / 121
2. PRESENTATION
2.1. Introduction
As a grid emulator, the GE is a programmable power supply specially designed to emulate grid
disturbances. Its programmable parameters will allow the generation of different type of grids
and its common faults and disturbances. The main functionalities of the GE are the following:
- It converts the AC input, of the main grid, in a controlled programmable AC (optionally
also DC) output by using an IGBT-based switching topology and DSP-based state-of-the-
art digital control.
- It can generate different types of grids:
o Three phase power grid (3F+N) from 0 to 480 Vac (277Vrms f-n)
o One phase power grid (1F+N) from 0 to 277 Vrms f-n
o Power grid with variable frequency from 10 to 400 Hz
1
o DC voltage source from 20 to 750 VDC (optional)
o HF Voltage Source from 360 to 880Hz (optional)
- Faults that GE can generate are:
o Power grid with voltage harmonics control up to 15th (13th if f
0
=60Hz)
o Flickers (programmable amplitude and frequency) and overvoltage
o Interruptions and voltage dips (types A, B, C, D)
o Three phase power grids with programmable variations in frequency
o Variable R resistance of grid
- As a bidirectional power supply, energy can flow from the grid to the equipment under
test (EUT) or vice versa. It allows energy saving during the tests by returning energy to
the power grid.
- The AC current consumed from the grid is sinusoidal (THDi < 2%).
The power range covered by the GE grid emulators goes from 7.5 to 200kVA (6.75-160kW).
Before operating the equipment, check that all LIMITS from the equipment are
correct. Please take care that CNG equipment are bidirectional, this means that
the equipment can consume or inject current. The equipment can operate as a
source or as a load.
1
Up to 120kVA. GE160 and GE200: the maximum frequency output is 100Hz.
To Next Page
Loading...
