Abstract: A power conversion device includes an inverter, rotating electrical machine, a positive electrode side main path, a negative electrode side main path, a neutral point path, switches provided on the positive electrode side main path, the negative electrode side main path and the neutral point path, a first connection path that connects a first target path that is one of the positive electrode side main path, the negative electrode side main path and the neutral point path, and a first connection terminal of electric equipment, and a second connection path that connects a second target path that is one of the positive electrode side main path, the negative electrode side main path and the neutral point path other than the first target path, and a second connection terminal of the electric equipment. In the power conversion device, for example, a configuration where the first connection path is connected on the electric storage device side of the switch in the first target path, is used.

Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.

Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.

Abstract: A power conversion apparatus includes a rotating electrical machine equipped with star-connected windings and an inverter equipped with series-connected units made up of upper arm switches and lower arm switches. The power conversion apparatus also includes a connecting path which electrically connects a negative terminal of a first electrical storage, a positive terminal of a second electrical storage connected in series with the first electrical storage, and a neutral point of the windings together, a connecting switch which is disposed in the connecting path, and a determiner which works to determine whether the connecting switch is required to be turned on, and a controller which turns on the connecting switch when it is determined by the determiner that the connecting switch is required to be turned on to execute a switching control operation on the upper arm switches and the lower arm switches.

Abstract: The present disclosure includes an inverter connected to a power supply unit via a positive electrode side electrical path and a negative electrode side electrical path and including switching elements, a rotary electric machine including windings connected to each other at a neutral point and inputting and outputting power from and to the power supply unit via the inverter, a connection path electrically connecting an intermediate point between the storage batteries of the power supply unit to the neutral point of the windings, and a device including a first terminal and a second terminal enabling energization between the power supply unit and the device. The first terminal is connected to the connection path, and the second terminal is connected to at least one of the positive electrode side electrical path and the negative electrode side electrical path.