Drive unit and transport machine
AssigneeKabushiki Kaisha Yaskawa Denki
InventorsTomohiko Sanada, Koji Higashikawa, Tasuku Isobe, Aiko Higuchi, Fumiaki Ikeda, Kenji Yamada
Life of this patent
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Abstract
A drive unit includes: an inverter; an electric motor that has a first winding connected to an output part of the inverter and a second winding connected to the first winding; a first semiconductor switch that has a first end connected to the first winding and a second end connected to the second winding; a second semiconductor switch that has a first end and a second end connected to the first winding and the first semiconductor switch; and a snubber circuit that is provided between the second end of the first semiconductor switch and the first end of the second semiconductor switch and has a capacitor and a diode.
Claims10
A drive unit comprising:
- an inverter;
- an electric motor that has a first winding connected to an output part of the inverter and a second winding connected to the first winding;
- a first semiconductor switch that has a first end connected to the first winding and a second end connected to the second winding;
- a second semiconductor switch that has a first end and a second end connected to the first winding and the first semiconductor switch;
- and
- a snubber circuit that is provided between the second end of the first semiconductor switch and the first end of the second semiconductor switch and has a capacitor and a diode.
A transport machine comprising a drive unit, wherein
- the drive unit includes:
- an inverter;
- an electric motor that has a first winding connected to an output part of the inverter and a second winding connected to the first winding;
- a first semiconductor switch that has a first end connected to the first winding and a second end connected to the second winding;
- a second semiconductor switch that has a first end and a second end connected to the first winding and the first semiconductor switch;
- and
- a snubber circuit that is provided between the second end of the first semiconductor switch and the first end of the second semiconductor switch and has a capacitor and a diode.
Dependencies are inferred from the claim text.