公开(公告)号：US10193445B2

公开(公告)日：2019-01-29

申请号：US15277086

申请日：2016-09-27

Applicant: DENSO CORPORATION

Inventor： Daisuke Suekawa ,  Mitsunori Kimura

IPC: H02J1/00 ,  H02J3/00 ,  H02M3/158 ,  H02M7/537 ,  H02M1/32 ,  H02M7/493 ,  B60L3/00 ,  H02P27/08 ,  B60K6/46 ,  H02P27/06

Abstract: A control device is applied for a power supply system that includes two boost converters. The two boost converters boosts inputted direct-current voltages to predetermined output voltages and output ends of the two boost converters are connected in parallel with each other. The control device includes a switching portion and a control portion. The switching portion controls switching of a switching element included in each of the two boost converters. The control portion shifts switching timings of the switching elements of the two boost converters from each other.

公开(公告)号：US09843261B2

公开(公告)日：2017-12-12

申请号：US15458261

申请日：2017-03-14

Applicant: DENSO CORPORATION

Inventor： Mitsunori Kimura ,  Daisuke Suekawa

IPC: H02M7/44 ,  H02M3/158 ,  G01K3/10 ,  G01K1/02

CPC classification number: H02M3/158 ,  G01K1/02 ,  G01K3/10 ,  H02M1/088 ,  H02M7/44 ,  H02M2001/327

Abstract: At least one monitor circuit monitors a temperature of at least one monitored element of switching elements of a power conversion circuit. At least one arrival determination circuit determines that a temperature of at least one non-monitored element of the switching elements has increased and reached a passing temperature. Based on the temperature of the monitored element and arrival determination signals, a temperature estimating unit obtains a temperature difference by subtracting a current temperature of the monitored and non-monitored element at the arrival determination time from an output limitation temperature set for each of the monitored and non-monitored element, and estimates a limitation subject temperature of the monitored or non-monitored element having a smallest temperature difference among the temperature differences. An output limiting unit starts output limitation of the power conversion circuit when the limitation subject temperature reaches the output limitation temperature of the monitored element or the non-monitored element.