Islanded Microgrid Operation
An Aegis-anchored installation microgrid can disconnect from the outside grid and keep serving its own loads without interruption.
Islanding, defined
An installation microgrid is a bounded electrical system — generation, distribution, and loads inside the fence line — that can operate either connected to the outside utility or islanded from it. Aegis is the anchor generator: the source that establishes voltage and frequency for the island so that loads see continuous power whether or not the utility is present.
Grid-following vs grid-forming
A grid-following source only injects power against a voltage reference set by someone else; remove the utility and it trips. Aegis output is conditioned to run grid-forming: the power-conditioning stage after direct energy conversion synthesises the island reference itself. That is what lets the installation ride through a loss of the outside grid instead of going dark and waiting for a restart.
- Connected mode: Aegis shares the bus with the utility feed
- Islanded mode: Aegis forms the bus alone for the fenced loads
- Transition: opening the tie breaker must not interrupt critical loads
Why the burner suits this role
Direct energy conversion produces a DC intermediate before the output inverter. A DC bus is a natural place to attach storage and to synthesise a stiff grid-forming AC waveform, which simplifies islanded control compared with a spinning-mass plant that must match frequency mechanically.
Islanding is not a reliability cure on its own. A single islanded generator inherits that generator's outage rate, so a resilient island uses Aegis in a redundant set (see the availability gate) plus a storage buffer to cover the seconds around a transition. The microgrid concept and the redundancy requirement are two halves of the same design.