Method And Control System For Controlling A Voltage Source Converter Using Power-Synchronization Control

A computer program including computer code which when executed by processing circuitry of a control system causes the control system to perform the method according to the steps:

• determining a VSC current vector (i) based on a VSC phase angle (θ) which is
• determined based on an integration of a power control error,
• determining an active power producing current component (idref) of a reference current vector (iref) based on an active power reference (Pref) for the VSC,
• determining the reference current vector (iref) based on the active power producing current component (idref),
• determining a damping component based on a virtual damping resistance (Ra), the reference current vector (iref) and the VSC current vector (i),
• determining a voltage vector (v) based on a VSC voltage magnitude (V) and the damping component, and
• controlling the VSC based on the voltage vector (v).

A control system for controlling a grid-connected voltage source converter, VSC, using power-synchronisation control, wherein the control system includes:

• a storage medium including computer code, and
• processing circuitry,
• wherein when the computer code is executed by the processing circuitry, the control system is configured to:
• determine a VSC current vector (i) based on a VSC phase angle (θ) which is determined based on an integration of a power control error,
• determine an active power producing current component (idref) of a reference current vector (iref) based on an active power reference (Pref) for the VSC,
• determine the reference current vector (iref) based on the active power producing current component (idref),
• determine a damping component based on a virtual damping resistance (Ra), the reference current vector (iref) and the VSC current vector (i),
• determine a voltage vector (v) based on a VSC voltage magnitude (V) and the damping component, and
• control the VSC based on the voltage vector (v).