Magnetic coupling degree detection device and electronic control unit
AssigneeDenso Corporation
InventorKei SANADA
Life of this patent
Estimating the term…
Abstract
A magnetic coupling degree detection device includes a current detector and a coupling degree detector. The current detector detects a current flowing through a driver of a multiphase power supply, in which the inductors of a plurality of phases are configured by a coupled inductor and which supplies power to a load. The coupling degree detector detects the degree of magnetic coupling of the coupled inductor based on the current value detected by the current detector. The coupling degree detector determines that the degree of magnetic coupling is low when the differential value of the current value is within a predetermined range, compared to when the differential value of the current value exceeds the upper limit of the predetermined range.
Claims15
A magnetic coupling degree detection device, comprising:
- a processor with a memory storing computer program code executable by the processor, the processor configured to cause the detection device to:
- detect a current flowing in a driver of a multiphase power supply in which inductors of a plurality of phases are configured by a coupled inductor and which supplies power to a load;
- detect a magnetic coupling degree of the coupled inductor based on a current value;
- and
- determine that the magnetic coupling degree is low when a differential value of the current value is within a predetermined range, compared to when the differential value exceeds an upper limit of the predetermined range.
A magnetic coupling degree detection device, comprising:
- a current detector configured to detect a current flowing in a driver of a multiphase power supply in which inductors of a plurality of phases are configured by a coupled inductor and which supplies power to a load;
- and
- a coupling degree detector configured to detect a magnetic coupling degree of the coupled inductor based on a current value detected by the current detector, wherein
- the coupling degree detector determines that the magnetic coupling degree is low when a differential value of the current value is within a predetermined range, compared to when the differential value exceeds an upper limit of the predetermined range.
An electric control unit, comprising:
- a multiphase power supply having a plurality of phases each including a driver and an inductor, the inductor of each phase being configured by a coupled inductor;
- a control unit configured to control an on/off of the driver;
- a processor configured to receive power from the multiphase power supply and operate;
- and
- a magnetic coupling degree detection device including a current detector configured to detect a current flowing in the driver, and a coupling degree detector configured to detect a magnetic coupling degree of the coupled inductor based on a current value detected by the current detector, wherein
- the coupling degree detector determines that the magnetic coupling degree is low when a differential value of the current value is within a predetermined range, compared to when the differential value exceeds an upper limit of the predetermined range.
Dependencies are inferred from the claim text.