Driving apparatus, driving method, and driving program

A driving method comprising:

• convert, by a conversion unit, power generated by a power source to AC power having a higher frequency;
• contactlessly transmit, by a contactless transmission unit, the converted AC power in a joint component of an electric machine;
• and
• drive, by a drive unit, the joint component based on the transmitted AC power,
• wherein
• the electric machine is a construction machine comprising a plurality of joint components,
• the power source is a DC power source that generates DC power,
• the conversion unit converts the DC power into AC power,
• the conversion unit is provided in at least one of the plurality of joint components,
• the joint component is at least one of a lower traveling body that can travel on the ground, an upper rotating body that is rotatably attached to the lower traveling body, a boom capable of being raised and lowered that is attached to the upper rotating body, an arm that is bendably attached to the boom, and a bucket that is bendably attached to the arm,
• the conversion unit is provided in the upper rotating body,
• the contactless transmission unit includes a boom transmission unit that contactlessly transmits power to the drive unit of the boom, an arm transmission unit that contactlessly transmits power to the drive unit of the arm, and a bucket transmission unit that contactlessly transmits power to the drive unit of the bucket,
• the conversion unit transmits the converted AC power to the boom transmission unit,
• the boom transmission unit transmits the AC power to the arm transmission unit,
• the arm transmission unit transmits the AC power to the bucket transmission unit, and
• the driving method further comprises directly connecting an AC voltage bus to the boom transmission unit, the arm transmission unit, and the bucket transmission unit.

A driving program causing a computer to perform:

• convert, by a conversion unit, power generated by a power source to AC power having a higher frequency;
• contactlessly transmit, by a contactless transmission unit, the converted AC power in a joint component of an electric machine;
• and
• drive, by a drive unit, the joint component based on the transmitted AC power,
• wherein
• the electric machine is a construction machine comprising a plurality of joint components,
• the power source is a DC power source that generates DC power,
• the conversion unit converts the DC power into AC power,
• the conversion unit is provided in at least one of the plurality of joint components,
• the joint component is at least one of a lower traveling body that can travel on the ground, an upper rotating body that is rotatably attached to the lower traveling body, a boom capable of being raised and lowered that is attached to the upper rotating body, an arm that is bendably attached to the boom, and a bucket that is bendably attached to the arm,
• the conversion unit is provided in the upper rotating body,
• the contactless transmission unit includes a boom transmission unit that contactlessly transmits power to the drive unit of the boom, an arm transmission unit that contactlessly transmits power to the drive unit of the arm, and a bucket transmission unit that contactlessly transmits power to the drive unit of the bucket,
• the conversion unit transmits the converted AC power to the boom transmission unit,
• the boom transmission unit transmits the AC power to the arm transmission unit,
• the arm transmission unit transmits the AC power to the bucket transmission unit, and
• the boom transmission unit, the arm transmission unit, and the bucket transmission unit are directly connected to an AC voltage bus.