The system includes a permanent magnet three-phase motor and an electronic current
controlled inverter by pulse width modulation. The motor has twenty-two poles and
twenty-four slots, three phases and a cylindrical outer rotor. This structure minimizes
torque ripple and maximizes energy efficiently. All coil windings are wound around
the stator teeth. A winding configuration is proposed. The motor phases are supplied
by alternating rectangular current waveforms. A specific inverter control system
is described to maximize efficiency and reduce current ripple and electromagnetic
interference under motorizing or generating operations. The current control is
realized by using the MOSFETs voltage for the current measurement.
