Title :
Harmonic State-Space modelling of an HVdc converter
Author :
Hwang, Michael Sheng-Pu ; Wood, Alan R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Canterbury, Christchurch, New Zealand
Abstract :
This paper presents a Harmonic State-Space (HSS) model of a fixed delay angle six-pulse High Voltage Direct Current (HVdc) converter. Under the HSS modelling framework, the non-linear switching of the converter thyristors is linearised using a small-signal modelling technique, and described by Frequency Transfer Matrices (FTM). The HSS is an extension to the Harmonic Domain (HD); it captures signal dynamics both in the steady-state and the transient state by the use of the Exponentially Modulated Periodic (EMP) signals. The FTM represents the switching of the thyristors and couple different frequencies around the converter. The modelling results are validated against a time-domain simulation by the PSCAD/EMTDC software package.
Keywords :
HVDC power convertors; switching convertors; thyristor applications; time-domain analysis; EMP signals; HVDC converter; PSCAD-EMTDC software package; converter thyristors; exponentially-modulated periodic signals; fixed delay angle six-pulse HSS model; frequency transfer matrices; harmonic domain; harmonic state-space modelling; high-voltage direct current converter; nonlinear switching; small-signal modelling technique; steady-state signal dynamics; thyristor switching; time-domain simulation; transient state signal dynamics; Equations; Frequency conversion; Harmonic analysis; Mathematical model; Switches; Thyristors; Time frequency analysis; HVdc; frequency transfer matrix; harmonic state-space; linear time periodic;
Conference_Titel :
Harmonics and Quality of Power (ICHQP), 2012 IEEE 15th International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4673-1944-7
DOI :
10.1109/ICHQP.2012.6381184
