Abstract: A manufacturing method for a hydroelectric power generation system includes removing a transaxle including a first motor generator from an end-of-life hybrid electric vehicle, and assembling a hydraulic turbine to a rotary shaft coupled to the first motor generator in the removed transaxle. The rotary shaft to which the hydraulic turbine is assembled may be an engine shaft connected to an engine of the hybrid electric vehicle when the transaxle is mounted on the hybrid electric vehicle.

Abstract: A power generation device includes a first generator connected to a prime mover, a second generator connected to the prime mover, a first DCDC converter connected to the first generator, and a second DCDC converter connected to the second generator.

Abstract: A driving device includes a motor; a power storage device; a first boost converter configured to exchange power by voltage conversion between a power storage device side and a motor side; a second boost converter connected to the first boost converter in parallel and configured to exchange power by voltage conversion between the power storage device side and the motor side; and an electronic control unit configured to control the first boost converter and the second boost converter. The electronic control unit controls the first boost converter and the second boost converter such that the loss of each of the first boost converter and the second boost converter is not minimized during an excessive power input in which power to be input to the power storage device from the motor side is greater than an input limit of the power storage device.

Abstract: A driving device includes a motor; a power storage device; a first boost converter configured to exchange power by voltage conversion between a power storage device side and a motor side; a second boost converter connected to the first boost converter in parallel and configured to exchange power by voltage conversion between the power storage device side and the motor side; and an electronic control unit configured to control the first boost converter and the second boost converter. The electronic control unit controls the first boost converter and the second boost converter such that the loss of each of the first boost converter and the second boost converter is not minimized during an excessive power input in which power to be input to the power storage device from the motor side is greater than an input limit of the power storage device.

Abstract: When the heat stress cumulative value of a second boost converter is equal to or greater than a second threshold value that is less than a first threshold value and the heat stress cumulative value of a first boost converter is less than a third threshold value that is equal to or less than the second threshold value, the first boost converter is controlled by voltage control and the second boost converter is controlled by power control. When the heat stress cumulative value of the first boost converter is equal to or greater than the second threshold value and the heat stress cumulative value of the second boost converter is less than the third threshold value, the first boost converter is controlled by the power control and the second boost converter is controlled by the voltage control.

Abstract: An HV-ECU executes a control process including the step of executing reverse rotation prevention control for an engine when EV running is in execution in a vehicle (YES in S100), an ABS is usable (YES in S102) and a magnitude of an amount of change in rotation speed of a ring gear of a differential unit is larger than a threshold value A (YES in S104), or when the ABS is unusable (NO in S102) and a magnitude of an amount of reduction in rotation speed of the ring gear of the differential unit is larger than a threshold value B (YES in S106).

Abstract: When the heat stress cumulative value of a second boost converter is equal to or greater than a second threshold value that is less than a first threshold value and the heat stress cumulative value of a first boost converter is less than a third threshold value that is equal to or less than the second threshold value, the first boost converter is controlled by voltage control and the second boost converter is controlled by power control. When the heat stress cumulative value of the first boost converter is equal to or greater than the second threshold value and the heat stress cumulative value of the second boost converter is less than the third threshold value, the first boost converter is controlled by the power control and the second boost converter is controlled by the voltage control.

Abstract: A control system for a hybrid drive unit for avoiding an overcharging and an over discharging of a battery when starting or stopping an engine. The control system selects a speed ratio where an amount of an electric power to be stored into the battery is large or to be discharged from the electric storage device is small if a state of charge of the battery is lower than a first threshold value (at step S4). The control system selects a speed ratio where an amount of an electric power to be discharged from the battery is large or to be stored into the battery is small if a state of charge of the electric storage device is higher than a second threshold value (at step S7).

Abstract: An HV-ECU executes a control process including the step of executing reverse rotation prevention control for an engine when EV running is in execution in a vehicle (YES in S100), an ABS is usable (YES in S102) and a magnitude of an amount of change in rotation speed of a ring gear of a differential unit is larger than a threshold value A (YES in S104), or when the ABS is unusable (NO in S102) and a magnitude of an amount of reduction in rotation speed of the ring gear of the differential unit is larger than a threshold value B (YES in S106).

Abstract: A control system for a hybrid drive unit for avoiding an overcharging and an over discharging of a battery when starting or stopping an engine. The control system selects a speed ratio where an amount of an electric power to be stored into the battery is large or to be discharged from the electric storage device is small if a state of charge of the battery is lower than a first threshold value (at step S4). The control system selects a speed ratio where an amount of an electric power to be discharged from the battery is large or to be stored into the battery is small if a state of charge of the electric storage device is higher than a second threshold value (at step S7).