Abstract
In the paper the topology of a new three-phase three-switch three-level PWM rectifier system is derived based on the basic structure of a DC-to-DC SEPIC converter. The system is characterized by full controllability of the power flow (independent of the level of the output voltage) and by a sinusoidal mains current shape in phase with the mains voltage. The operating principle of the converter is explained based on the conduction states of a bridge leg within a pulse period. The stationary operating behavior is analyzed by digital simulation based on the control of the mains phase currents by independent ramp-comparison controllers. Furthermore, a mathematical description of the operating behavior of the three-phase system including the coupling of the phase current controllers (given due to the floating mains star point) is discussed. Finally, results of an experimental investigation of a laboratory model of the converter are presented.
| Original language | English (US) |
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| Title of host publication | Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC |
| Pages | 657-665 |
| Number of pages | 9 |
| Volume | 2 |
| State | Published - Jan 1 1997 |
| Event | Proceedings of the 1997 IEEE 12th Applied Power Electronics Conference - Atlanta, GA, USA Duration: Feb 23 1997 → Feb 27 1997 |
Other
| Other | Proceedings of the 1997 IEEE 12th Applied Power Electronics Conference |
|---|---|
| City | Atlanta, GA, USA |
| Period | 2/23/97 → 2/27/97 |