Title :
New medium voltage drive systems using three-level neutral point clamped inverter with high voltage IGBT
Author :
Sommer, R. ; Mertens, A. ; Griggs, M. ; Conraths, H.-J. ; Bruckmann, M. ; Greif, T.
Author_Institution :
Large Drives, Siemens AG, Erlangen, Germany
Abstract :
This paper presents a new range of medium voltage motor drives with a three-level neutral point clamped inverter using high-voltage IGBTs. Different line side converters are available, including a twelve pulse diode rectifier and an active front end converter in the same configuration as the inverter. Innovative features of the drive include series-connection of high-voltage IGBTs and a novel isolated voltage and current sensing system. The motor control is based on field-oriented vector control and an optimized PWM modulator, so that switching losses and current harmonics are minimized. The combination of the three-level neutral point clamped inverter, with motor insulation taking inverter operation into account, results in an efficiency optimized (filterless) drive system
Keywords :
AC motor drives; AC-DC power convertors; DC-AC power convertors; insulated gate bipolar transistors; invertors; machine vector control; power bipolar transistors; power semiconductor switches; rectifying circuits; switching circuits; MV motor drive systems; active front end converter; current harmonics; efficiency optimisation; field-oriented vector control; high-voltage IGBT; isolated voltage/current sensing system; line side power converters; motor insulation; optimized PWM modulator; series-connection; switching losses; three-level neutral point clamped inverter; twelve pulse diode rectifier; Diodes; Insulated gate bipolar transistors; Machine vector control; Medium voltage; Motor drives; Pulse inverters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.805942
