The invention describes a method of controlling the power input to a HVDC transmission link (2), which HVDC transmission link (2) is connected to an AC power plant (1) by means of a first voltage source converter (10) and to an AC grid (3) by means of a se...

It is described a method for controlling a DC-transmission link (3) for transmitting electric power from a power production unit (3) connected to a AC-DC converter (47) at a first side of the DC-transmission link to a utility grid (5) connected to a DC-AC ...

A method of startup of an electric start electrical power generating system (EPGS) is provided. The EPGS includes a generator configured to power a direct current (DC) load via a DC bus. The method includes: disconnecting the DC load from the DC bus; conne...

A method and apparatus for connection of a wind driven turbine generator 12 to an HVDC transmission line is provided that does not require transformation of the wind generated AC voltage to a nominal AC distribution grid frequency. An AC output from the tu...

The method involves precharging a direct current (DC) voltage intermediate circuit (7) at an input of an inverter (3) e.g. three-phase inverter, from an alternating current network (4). Charging current flowing from the network into the circuit is rectifie...

A system (20) and method for electrical power conversion is described. The system (20) is intended for use in converting a high voltage DC power output from a turbine generator to an AC power signal that is suitable for connecting to an AC power grid. The ...

A system for energy transfer between an ac network and a rotating mechanical equipment, comprising a dc link, a first Voltage Source Converter (VSC) for energy transfer between the ac network and the dc link, and an apparatus for energy transfer between th...

A time-discrete pulse-width modulation control equipment for a voltage source converter, in particular a 3-level or a 2-level converter, has means (IREG) for generation of an AC-voltage reference template ( UV a R , UV b R , UV c R , UV €¾ abc R , UV ...