Variants of the auxiliary resonant commutated pole principle are described, aiming at assisting the generation of PWM waveforms with soft transitions in multilevel nested-cell phase legs. Typical merits and demerits of the proposed circuits are addressed. In order to clarify the evolution of the topologies, various steps are discussed starting from a conventional two-level switching leg. Experimental results validate the concepts for a 800 V/100 A/10 kHz three-level nested-cell converter.
|Title of host publication||Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting|
|Publisher||Institute of Electrical and Electronics Engineers|
|Number of pages||8|
|Publication status||Published - 2001|