Rotating electrical machine control device

A rotating electrical machine control device that controls drive of a rotating electrical machine having multiphase open-end windings through a first inverter and a second inverter, the multiphase open-end windings being independent of each other, wherein

• the first inverter is connected to a one-end side of the multiphase open-end windings to convert electric power between direct current and multiphase alternating current,
• the second inverter is connected to an other-end side of the multiphase open-end windings to convert electric power between direct current and multiphase alternating current,
• the first inverter and the second inverter can be controlled by a plurality of control schemes, respectively, the control schemes differing from each other in at least one of a switching pattern and a switching frequency and being independent of each other,
• a first speed region in which rotational speed of the rotating electrical machine is relatively low at same torque and a second speed region in which rotational speed of the rotating electrical machine is higher than in the first speed region are set as control regions of the rotating electrical machine, and
• the rotating electrical machine control device has a control mode in which the first inverter and the second inverter are controlled by a same control scheme in the first speed region, and the first inverter and the second inverter are controlled by different control schemes in the second speed region,
• wherein the first inverter is configured to receive a direct current power supply from a first direct current source and includes a first capacitor in parallel between the first inverter and the first direct current source, and the second inverter is configured to receive a direct current power supply from a second direct current source and includes a second capacitor in parallel between the second inverter and the second direct current source.