The Universal Distributed Energy Resource (DER) Element, uDERe, is an AC/AC converter that emulates
different kind of systems found on smartgrids. Through software configuration, the emulator can be programmed
to behave as a generator, storage or load. As a generator, the equipment will behave as a Photovoltaic or
Wind Power system. As a load, domestic or industrial systems can be emulated (HVAC or motors for example).
The behaviour of a battery storage system can be implemented too, with its charging/discharging curves.
This emulator is specially designed to be used in a MicroGrid Laboratory.
It provides high flexibility, by emulating different systems with one only equipment, and energy regeneration.
The uDERe is composed by an Active Rectifier, a DC bus stage, and a three phase IGBT inverter with filters and sensors.
The equipment is digitally controlled with a DSP.
The Active Rectifier is connected to the experimental microgrid and works as a "real converter"
(DER inverter, storage system or load). The Inverter is connected to the grid and behaves as
the "emulated system" (emulating energy resources, real batteries or loads).
The "real converters" can be commanded by IEC61850 and the "emulated systems" can be programmed as
different systems via Modbus TCP/IP or a PC-based configuration tool.
The regenerative topology used in the converter allows significant savings in test platforms.
Moreover, the electrical installation of the laboratory can be reduced to 15% of rated power used in the experiments.