Input-admittance calculation and shaping for controlled voltage-source converters

• A controlled power electronic converter can cause local instabilities when interacting with other dynamic subsystems in a power system. Oscillations at a certain frequency cannot, however, build up if the converter differential input admittance has a positive conductance (real part) at that frequency, since power is then dissipated. In this paper, input-admittance expressions for a voltage-source converter are derived. It is seen how the admittance can be shaped in order to get a positive real part in the desired frequency regions by adjusting the controller parameters.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

grid interaction

TORSIONAL INTERACTION

stability

DISSIPATIVE DYNAMICAL-SYSTEMS

oscillations

converter control

passivity

dissipativeness

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)