Patent ID: 11909342
Assignee: NAGOYA INSTITUTE OF TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A rotating electrical machine control device that controls, through a first inverter and a second inverter, drive of a rotating electrical machine having open-end windings of a plurality of phases, the open-end windings being independent of each other,
wherein
the first inverter is connected to a one-end side of the open-end windings of a plurality of phases to convert electric power between direct current and alternating currents of a plurality of phases,
the second inverter is connected to an other-end side of the open-end windings of a plurality of phases to convert electric power between direct current and alternating currents of a plurality of phases,
the first inverter and the second inverter can be controlled using a plurality of control schemes with different switching patterns and can be controlled using the control schemes that are independent of each other,
as control regions of the rotating electrical machine, a first speed region and a second speed region in which rotational speed of the rotating electrical machine is higher than in the first speed region for same torque are set,
the control schemes include pulse width modulation control in which a plurality of pulses with different patterns are outputted in one cycle of electrical angle; and mixed pulse width modulation control in which control is performed such that a plurality of pulses with different patterns are outputted during a first period and an inactive state continues during a second period, the first period being a half cycle of electrical angle and the second period being an other half cycle, and
both inverters, the first inverter and the second inverter, are controlled by the mixed pulse width modulation control in the second speed region.