01-02-2024, 08:47 AM
The name "valve hall" has stuck for large converter stations. After rotating machinery, the next technologies were thyratrons and mercury arc rectifiers. Grid controlled MARs can be used as inverters. Then thyristors took over. The newest technology is, inevitably, FETs. The latest inverters can generate into an otherwise dead AC circuit. Earlier thyristor converters needed the AC grid to be present to provide commutation.
This is related to another grid problem: The lack of inertia. Traditional generators have a large rotating mass which helps to stabilise the grid. Inverters have no mass. Lots of inverters and little rotating mass can lead to an unstable grid. New techniques include providing the equivalent of inertia by clever software and electronics. This is known as grid "forming"
https://www.futurebridge.com/industry/pe...tribution/
This is related to another grid problem: The lack of inertia. Traditional generators have a large rotating mass which helps to stabilise the grid. Inverters have no mass. Lots of inverters and little rotating mass can lead to an unstable grid. New techniques include providing the equivalent of inertia by clever software and electronics. This is known as grid "forming"
https://www.futurebridge.com/industry/pe...tribution/
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv