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1. WO2020113007 - SYSTEMS AND METHODS FOR LOW POWER EXCITATION IN HIGH POWER WIRELESS POWER SYSTEMS

Publication Number WO/2020/113007
Publication Date 04.06.2020
International Application No. PCT/US2019/063616
International Filing Date 27.11.2019
IPC
H02J 50/12 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
10using inductive coupling
12of the resonant type
CPC
B60L 53/122
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
53Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
10characterised by the energy transfer between the charging station and the vehicle
12Inductive energy transfer
122Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
H02J 50/12
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
10using inductive coupling
12of the resonant type
H02J 50/80
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
80involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
H02J 50/90
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
90involving detection or optimisation of position, e.g. alignment
H02M 1/08
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/4208
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
4208Arrangements for improving power factor of AC input
Applicants
  • WITRICITY CORPORATION [US]/[US]
Inventors
  • ESTEBAN, Bryan
  • DANILOVIC, Milisav
  • SEALY, Kylee, Devro
Agents
  • GUCKAYA, Gozde
  • ARGENTIERI, Steven, R.
  • BUCHMAN, Joshua, J.
  • ASHRAF, Shovon
  • BRODOWSKI, Michael
Priority Data
62/773,51830.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS AND METHODS FOR LOW POWER EXCITATION IN HIGH POWER WIRELESS POWER SYSTEMS
(FR) SYSTÈMES ET PROCÉDÉS D'EXCITATION À BASSE PUISSANCE DANS DES SYSTÈMES D'ALIMENTATION SANS FIL À HAUTE PUISSANCE
Abstract
(EN)
Disclosed herein are systems and methods for low power excitation of wireless power transmitters configured to transmit high power. The exemplary systems and methods include disabling a power factor correction circuit of the transmitter, and adjusting one or more variable impedance components of the impedance network to obtain a minimum attainable impedance. The variable impedance components can be configured to operate between the minimum attainable impedance and a maximum attainable impedance. The systems and methods can include adjusting a phase shift angle associated with one or more transistors of the inverter and driving the transmitter such that the transmitter resonator coil generates a magnetic flux density less than or equal to a field safety threshold.
(FR)
L'invention concerne des systèmes et des procédés d'excitation à basse puissance d'émetteurs de puissance sans fil conçus pour transmettre une haute puissance. Les systèmes et les procédés donnés à titre d'exemple font appel à une désactivation d'un circuit de correction de facteur de puissance de l'émetteur, et à un réglage d'un ou de plusieurs composants à impédance variable du réseau d'impédance pour obtenir une impédance minimale atteignable. Les composants à impédance variable peuvent être conçus pour fonctionner entre l'impédance minimale atteignable et une impédance maximale atteignable. Les systèmes et les procédés peuvent faire appel à un réglage d'un angle de déphasage associé à un ou plusieurs transistors de l'onduleur et à un pilotage de l'émetteur de sorte que la bobine de résonateur d'émetteur génère une densité de flux magnétique inférieure ou égale à un seuil de sécurité de champ.
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