Winding switching device and winding switching system
AssigneesSumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd., Autonetworks Technologies, Ltd.
InventorMasaki TSUDA
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Abstract
A winding switching device is a winding switching device for switching a connection state of a plurality of windings of a motor capable of switching the connection state of the plurality of windings between a first connection state and a second connection state, and includes: a detection unit that detects a zero crossing point of a measurement value of a current sensor that measures current flowing through a winding of the windings, and a switching unit that switches the connection state of the plurality of windings between the first connection state and the second connection state at a timing when the detection unit detects the zero crossing point.
Claims10
A winding switching device for switching a connection state of a plurality of windings of a motor capable of switching the connection state of the plurality of windings between a first connection state and a second connection state, the winding switching device comprising:
- a detection circuitry configured to detect a zero crossing point of a measurement value of a current sensor configured to measure current flowing through a winding of the windings;
- and
- a switching circuitry configured to switch the connection state of the plurality of windings between the first connection state and the second connection state at a timing at which the detection circuitry detects the zero crossing point.
A winding switching system comprising:
- a motor capable of switching a connection state of a plurality of windings between a first connection state and a second connection state;
- a power converter configured to convert DC power output from a battery into AC power and supply the AC power to the motor;
- and
- a winding switching device for switching the connection state of the plurality of windings,
- wherein the winding switching device includes:
- a detection circuitry configured to detect a zero crossing point of a measurement value of a current sensor configured to measure current flowing through a winding of the windings;
- and
- a switching circuitry configured to switch the connection state of the plurality of windings between the first connection state and the second connection state at a timing when the detection circuitry detects the zero crossing point.
Dependencies are inferred from the claim text.