Title: Switch wear leveling

Abstract

An apparatus for switch wear leveling includes a switching module that controls switching for two or more pairs of switches in a switching power converter. The switching module controls switches based on a duty cycle control technique and closes and opens each switch in a switching sequence. The pairs of switches connect to a positive and negative terminal of a DC voltage source. For a first switching sequence a first switch of a pair of switches has a higher switching power loss than a second switch of the pair of switches. The apparatus includes a switch rotation module that changes the switching sequence of the two or more pairs of switches from the first switching sequence to a second switching sequence. The second switch of a pair of switches has a higher switching power loss than the first switch of the pair of switches during the second switching sequence.

Inventors:

Wu, Hunter; Sealy, Kylee; Gilchrist, Aaron

Issue Date:

Tue Sep 01 00:00:00 EDT 2015

Research Org.:

Utah State University, North Logan, UT (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1213442

Patent Number(s):

9123467

Application Number:

13/748,074

Assignee:

Utah State University (North Logan, UT)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

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B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES

B60L53/122 - Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
B60L53/126 - Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

H01F38/14 - Inductive couplings {

H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER

H02J2310/48 - for electric vehicles [EV] or hybrid vehicles [HEV]
H02J50/005 - {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices}
H02J50/10 - using inductive coupling
H02J50/12 - of the resonant type
H02J50/90 - involving detection or optimisation of position, e.g. alignment
H02J7/00712 - {the cycle being controlled or terminated in response to electric parameters}

H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS

H02M7/53871 - {with automatic control of output voltage or current}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

Y02T10/70 - Energy storage for electromobility
Y02T10/7072 - Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Y02T90/12 - Electric charging stations
Y02T90/14 - Plug-in electric vehicles

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DOE Contract Number:  

EE0003114

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Jan 23

Country of Publication:

United States

Language:

English

Subject:

24 POWER TRANSMISSION AND DISTRIBUTION