Power converter, motor driving unit, and electric power steering device
AssigneeNidec Corporation
InventorAhmad GHADERI
Life of this patent
Estimating the term…
Abstract
A power converter to convert power from a power supply into power supplied to a motor including n-phase windings, where n is an integer of 3 or more, in which first ends thereof are Y-connected and includes an inverter connected to second ends of the n-phase windings, a phase separation relay circuit to switch connection and disconnection between the power supply and the n-phase windings for each phase, a neutral point leg connected to a neutral point node of the motor, in which the first ends of the n-phase windings are Y-connected, and a neutral point separation relay circuit to switch connection and disconnection between the power supply and the neutral point node.
Claims19
1-18. (canceled)
A power converter to convert power from a power supply into power supplied to a motor including n-phase windings, where n is an integer of 3 or more, in which first ends thereof are Y-connected, the power converter comprising:
- an inverter connected to second ends of the n-phase windings and including n legs each including a low-side switching element and a high-side switching element;
- a phase separation relay circuit to switch connection and disconnection between the power supply and the n-phase windings for each phase;
- a neutral point leg including a low-side switching element and a high-side switching element and connected to a neutral point node of the motor, in which the first ends of the n-phase windings are Y-connected;
- and
- a neutral point separation relay circuit to switch connection and disconnection between the power supply and the neutral point node.
Dependencies are inferred from the claim text.