Title :
Multilevel current-source and voltage-source converter systems coupled with harmonic canceling reactors
Author :
Oguchi, K. ; Hama, H. ; Kubota, T.
Author_Institution :
Fac. of Eng., Ibaraki Univ., Hitachi, Japan
Abstract :
Novel current-source and voltage-source power converter systems with 36-step input waveforms are proposed. Each of the systems consist of two main power converters coupled with harmonic canceling AC-side reactors and an additional converter coupled with DC-side interphase transformers. The additional converter injects into the DC links ripple currents or voltages having a frequency six times that of the line frequencies. The proposed systems are suitable for high power applications because of their low switching frequencies and the low distortion of their waveforms. The system configurations and operations are presented for comparison of the two types. Experimental results show close agreement with theoretical prediction
Keywords :
harmonic distortion; power supplies to apparatus; power system harmonics; power transformers; switching circuits; 36-step input waveforms; DC link; DC-side interphase transformers; harmonic canceling AC-side reactors; high power applications; multilevel current-source power convertors; multilevel voltage-source power convertors; ripple current injection; ripple voltage injection; switching frequencies; waveform distortion; Associate members; Inductors; Magnetic flux; Pulse width modulation; Pulse width modulation converters; Senior members; Switching converters; Switching frequency; Transformers; Voltage;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.629026
