Abstract |
The approach presented in this paper for the calculation of networks, including 6-pulse current converter bridges, utilises the periodicity of all state variables in steady-state operating mode. The entire system (3-phase networks compensation devices current converter - d.c. network) is represented in complex space phasor components for each switching status and described in state space considering the eigenvalues and switching sequence of the current converter. The resulting linear inhomogeneous boundary value problem is solved as a whole. Therefore the time functions of all state variables in large and compensated networks are obtained analytically. Further signal processing leads to the harmonic load, power flows, reactive compensation factor and stationary resonance conditions in transmission systems. |