Noise reducing power feed device, power reception device and power feed method

Power feed device (100) supplies power to storage battery (152) mounted on vehicle (150), through power receiving unit (154) of vehicle (150). Power supply unit (104) performs preliminary supply to power receiving unit (154) while sequentially changing a frequency, and performs main supply with powe...

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Bibliographic Details
Main Authors Ohashi, Osamu, Nishio, Tsuyoshi, Koizumi, Masayoshi, Asaoka, Noriaki
Format Patent
LanguageEnglish
Published 26.06.2018
Subjects
BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES
ELECTRICITY
ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL
GENERATION
INDUCTANCES
MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES
MAGNETS
PERFORMING OPERATIONS
POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SYSTEMS FOR STORING ELECTRIC ENERGY
TRANSFORMERS
TRANSPORTING
VEHICLES IN GENERAL
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Summary:Power feed device (100) supplies power to storage battery (152) mounted on vehicle (150), through power receiving unit (154) of vehicle (150). Power supply unit (104) performs preliminary supply to power receiving unit (154) while sequentially changing a frequency, and performs main supply with power larger than in the preliminary supply. Power supply-side controller (103) acquires frequency characteristics associated with power supply coil (104a), and specifies a resonance frequency based on the acquired frequency characteristics. Power supply-side controller (103) determines whether or not to supply power to power reception coil (154a) based on a frequency difference between resonance frequencies.
Bibliography:Application Number: US201414897522