Title :
Innovative inverter topology for concentrated winding PM motor drives
Author :
Caricchi, F. ; Crescimbini, F. ; Lipo, T.A. ; Santini, E.
Author_Institution :
Dept. of Electr. Eng., Rome Univ., Italy
fDate :
29 Jun-3 Jul 1992
Abstract :
Applications of concentrated winding machines prompt new solutions in designing the power converter which supplies the machine, since the machine average torque can be increased significantly by supplying three-phase current waveforms matching in full the trapezoidal back EMF. However, such current supply arrangements involve a third-harmonic current flowing into the machine. An innovative converter topology is presented to overcome this problem. This new configuration extends the standard layout of conventional PWM voltage source inverters by adding a fourth branch devoted to controlling the machine neutral voltage. Computer simulations are used to show the inverter modes of operation. Experimental results for a converter prototype which has been constructed using IGBTs are reported
Keywords :
digital simulation; electric drives; electric machine analysis computing; invertors; machine windings; permanent magnet motors; IGBT; PM motor drives; PWM voltage source inverters; average torque; computer simulations; concentrated winding; inverter topology; neutral voltage control; power converter; third-harmonic current; three-phase current waveforms; trapezoidal back EMF; Computer simulation; Current supplies; Insulated gate bipolar transistors; Machine windings; Power supplies; Prototypes; Pulse width modulation inverters; Topology; Torque converters; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE
Conference_Location :
Toledo
Print_ISBN :
0-7803-0695-3
DOI :
10.1109/PESC.1992.254779
