Patent ID: 11962259
Assignee: CITY UNIVERSITY OF HONG KONG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A drive system for an N phase permanent magnet synchronous motor, the motor comprising a rotor and a stator, the rotor comprising at least one permanent magnet and the stator comprising N windings,
the drive system comprising
first and second power rails;
a DC power supply of voltage Vdc connected between the first and second power rails;
N bridge arms connected in parallel between the first and second power rails, each bridge arm comprising first and second switches connected in series;
N output lines, each output line comprising a first end connected to a bridge arm at a point between the first and second switches and a second end for connection to a winding;
the N bridge arms being grouped into A groups of B bridge arms such that N=AB, each group of B bridge arms being a B phase inverter.