1. AFE (Active Front End)
The AFE is the bidirectional Interlink converter that ensures DC grid stability in the microgrid. In addition, the AFE provides galvanic isolation between the AC and DC grid.
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The AFE is the bidirectional Interlink converter that ensures DC grid stability in the microgrid. In addition, the AFE provides galvanic isolation between the AC and DC grid.
A collection of batteries that serves as support for delivering the desired power when it is not available from renewables.
The DC battery chargers are connected to the Battery Management System of the Battery Racks. These chargers provide communication with the batteries about the state of charge and charging / discharging.
DC busbar system to which all power sources and consumers can be connected. Distribution boxes with DC protection can be installed on this busbar system.
These connections between the generated solar power and the DC microgrid ensure that the voltage of the PV panels is fed into the DC grid without too much disruption.
Emergency range:
between 500Vdc and 630Vdc
Normal operating range:
between 640Vdc and 760Vdc
Overvoltage range:
between 770Vdc and 1080Vdc.
Among electricians, there is a prevailing idea that DC applications bring more safety issues. This is often the result of mixed AC/DC solutions and the use of electromagnetic circuit breakers or fuses. In the Ei•dcgrid, we use the specialized and advanced components of DC Systems. They have developed security equipment as a pioneer in the DC world based on Solid State technology: the Current Routers (CRN). This technology provides ultra-fast tripping and an ultra-limited short-circuit current in the installation. Benefits of Solid State technology include:
Because in the DC microgrid all power sources and consumers are connected to the same ring, it is very important that all power sources are disconnected during work on the grid. For maintenance purposes, a patented high impedance 48V safety cable is used. This safety cable serves as auxiliary power for all sources, converters, and CRN. When this cable is de-energized, the system will not be turned on. If the system is live and the voltage of the safety cable drops, all CRN and sources will be switched off.
Reliable and sustainable direct current microgrid solutions for a changing energy landscape.
The DC microgrid of Elektro Internationaal follows the open protocol for direct current applications.
Elektro Internationaal B.V.
Pompmolenlaan 17
3447 GK Woerden
The Netherlands
+31 348 420540
info@ei-woerden.nl
www.elektrointernationaal.com
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