Utilisation of series connected transformers for multiple active rectifier units

In many industrial systems the bulk of the power required for the process is being processed by medium-voltage (MV) high power variable speed drive systems. As the installed power of such MV drive systems increase, as a ratio of the available short circuit power, the relative power quality properties of these systems' AC-DC front ends become more critical. In high power drives several combinations of active rectifier units (ARUs) are possible, here the benefits of using several ARUs connected in parallel on the dc-side while utilising a series connection of transformer primaries on the ac side are discussed.

[1]  Drazen Dujic,et al.  Modular medium voltage drive for demanding applications , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[2]  Akshay Kumar Rathore,et al.  Optimal pulsewidth modulation of a dual three-level inverter system operated from a single dc link , 2011 .

[3]  G. Papafotiou,et al.  Model predictive pulse pattern control , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[4]  P. Pillay,et al.  Multilevel selective harmonic elimination PWM technique in series-connected voltage inverters , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[5]  P. Steimer,et al.  IGCT devices-applications and future opportunities , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[6]  Richard G. Hoft,et al.  Generalized Techniques of Harmonic Elimination and Voltage Control in Thyristor Inverters: Part I--Harmonic Elimination , 1973 .