Vehicle

A vehicle comprising:

• a planetary gear mechanism including a sun gear, a ring gear, a planet pinion, and a carrier, the carrier supporting the planet pinion rotatably;
• an engine coupled to the carrier;
• a first motor generator coupled to the sun gear;
• a second motor generator coupled to the ring gear and an axle;
• a first power converter configured to electrically coupled to the first motor generator;
• and
• a control device,
• wherein the first power converter includes a plurality of arms connected in parallel to each other, each of the arms including a first switching element and a second switching element that are connected in series to each other between a positive electrode line and a negative electrode line, a node between the first switching element and the second switching element being connected to a winding of the first motor generator,
• wherein the control device comprising:
• at least one processor;
• and
• at least one memory coupled to the at least one processor,
• wherein a first ON-state control operation is an operation to cause one of a group of the first switching elements of the arms and a group of the second switching elements of the arms to be in an ON state and the other one of the group of the first switching elements and the group of the second switching elements to be in an OFF state, and
• wherein a first ON-state control brake torque is a brake torque to act on the engine, the brake torque to act on the engine being caused by a brake torque generated in the first motor generator when the first ON-state control operation is executed, and
• wherein the at least one processor configured to execute processing comprising
• determining, in response to detecting of occurrence of abnormality in the first motor generator and the second motor generator, an estimated value of the first ON-state control brake torque which is to act on the engine when it is assumed that the first ON-state control operation is executed at a current time point,
• determining a first target torque, the first target torque being a torque greater than a target torque of the engine at a current time point by an amount equal to the estimated value of the first ON-state control brake torque,
• determining a delay time, the delay time being a period of time which is estimated to take until an actual torque of the engine at a current time point reaches the first target torque when it is assumed that the first target torque is set to the target torque of the engine at a current time point,
• setting the first target torque to the target torque of the engine, and
• starting executing the first ON-state control operation after a lapse of the delay time from a time point at which the first target torque is set to the target torque of the engine.