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

fYear

1992

fDate

29 Jun-3 Jul 1992

Firstpage

964

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE

Conference_Location

Toledo

Print_ISBN

0-7803-0695-3

Type

conf

DOI

10.1109/PESC.1992.254779

Filename

254779