Motor and electric power steering device
AssigneeNidec Corporation
InventorsYoshiaki Yamashita, Hiromitsu Ohashi
Life of this patent
Estimating the term…
Abstract
A motor includes a first inverter electrically connected to a first end of a winding of each phase, and a second inverter electrically connected to a second end of the winding of each phase. Each of the first and second inverters includes low-side switching elements and high-side switching elements. FETs of the first inverter are electrically connected to a first end of a U-phase winding. FETs of the second inverter are electrically connected to a second end of the U-phase winding. At least a portion of a current flowing from one of the FETs of the first inverter to the U-phase winding flows to one of the FETs of the second inverter. One of the FETs of the first inverter and one of the FETs of the second inverter are adjacent to each other.
Claims10
A motor comprising:
- n-phase windings, n being an integer of 3 or more;
- a first inverter that is electrically connected to a first end of each of the n-phase windings;
- and
- a second inverter that is electrically connected to a second end of each of the n-phase windings;
- wherein
- each of the first inverter and the second inverter includes a plurality of low-side switching elements and a plurality of high-side switching elements;
- the n-phase windings include a first-phase winding;
- a first low-side switching element and a first high-side switching element of the first inverter are electrically connected to a first end of the first-phase winding;
- a second low-side switching element and a second high-side switching element of the second inverter are electrically connected to a second end of the first-phase winding;
- at least a portion of a current flowing from the first high-side switching element of the first inverter to the first-phase winding flows to the second low-side switching element of the second inverter;
- and
- the first high-side switching element of the first inverter and the second low-side switching element of the second inverter are adjacent to each other.
Dependencies are inferred from the claim text.