The resonance damping effect associated with linear shunt loads and single-phase converters

The possibility of circuit resonance due to the application of capacitors in a harmonic rich environment is well understood. A converter is a source of distortion, which may excite a resonance. However a converter may also contribute to the damping of resonance. A method is described to calculate the harmonic impedance of a system from simulated capacitor switching. The effect of the damping due to the linear loads and converters is considered in relation to low order and high order parallel resonances.