EP3175533A1 - Dispositif à valeur de capacité ajustable permettant d'accorder un système oscillant, système oscillant et système de transmission d'énergie - Google Patents

Dispositif à valeur de capacité ajustable permettant d'accorder un système oscillant, système oscillant et système de transmission d'énergie

Info

Publication number
EP3175533A1
EP3175533A1 EP15763908.9A EP15763908A EP3175533A1 EP 3175533 A1 EP3175533 A1 EP 3175533A1 EP 15763908 A EP15763908 A EP 15763908A EP 3175533 A1 EP3175533 A1 EP 3175533A1
Authority
EP
European Patent Office
Prior art keywords
capacitor
var
voltage
capacitance value
oscillatory system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15763908.9A
Other languages
German (de)
English (en)
Inventor
Manuel Blum
Thomas Komma
Mirjam Mantel
Monika POEBL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3175533A1 publication Critical patent/EP3175533A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/185—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using a mixer in the loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the invention relates to a device with an adjustable capacitance value for tuning a first oscillatory system, which can be coupled for coupling to a second oscillatable system with an unknown, weak coupling factor.
  • the invention further relates to an oscillatory system for transmitting energy and an oscillatory system for receiving energy. Furthermore, the invention relates to a power transmission system.
  • the electrical energy is transmitted via an alternating magnetic field within an air-gap system.
  • the coil system consists of two coils: a primary coil powered by a power source and a secondary coil providing electrical power to the consumer. If such a device is used in the environment of motor vehicles, then the primary coil is usually arranged in a charging station at the bottom of a parking area.
  • the secondary coil is typically located in the motor vehicle.
  • the air gap of the coil system which as a factor influences the transmission efficiency, depends on the geometrical configuration of the components in which the primary coil and the secondary coil are integrated.
  • the air gap of the Sys tems ⁇ is mainly determined by the ground clearance of a respective type of vehicle.
  • the efficiency of the transmission is further influenced by the respective lateral arrangement of primary coil and secondary coil, caused by a respective Abstellsi ⁇ situation. Basically, the larger the latent is the primary and secondary coil misalignment and the larger the air gap, the lower the efficiency.
  • the operating frequency generally results from the inductance value of the primary coil, which depends on the coupling factor of a transformer formed from Primärspu ⁇ le and secondary coil, or a coil in combination with a capacity of the respective coil system.
  • capacitance diodes are typically used for this purpose, which however are only suitable for small voltages and small capacitance values.
  • resonance converters such as these in an energy transmission system for
  • the primary coil system typically transmits several kW of power to the secondary coil system.
  • variable capacitor network with the aid of bidirectional switching elements.
  • such a network is expensive in terms of the required installation space and the costs.
  • the switching elements produce significant losses when the energy transmission system ⁇ as described, to be operated in the power range of several kW. It is an object of the present invention to provide a device with adjustable capacitance value, in which the adjustment of the capacitance value is possible in a simpler manner and which can be used in a power transmission system, which is designed to transmit power in the range of several kW. Furthermore, a corresponding oscillatory system and a power transmission system should be specified.
  • a device with adjustable capacitance value is proposed for tuning a first oscillatory system intended for coupling to a second oscillatory system with an unknown, weak coupling factor.
  • the device comprises a first capacitor whose capacitance is dependent on a voltage and a DC voltage source whose voltage applied to its terminals is controllable.
  • the series connection of the DC voltage ⁇ source and a decoupling element is connected in parallel with the terminals of the capacitor to bias the first capacitor with a variable bias voltage.
  • the voltage applied to the terminals of the DC voltage source is or is adjusted in dependence on an operating frequency of the first oscillatory system.
  • the device described is less lossy compared to a variant with bidirectional switching elements.
  • the device consumes a small space and can be provided at low cost.
  • a comparatively cheap capacitor with a "bad” ceramic can be used as the first capacitor.
  • “Bad” here is to be understood in terms of the stability of its capacitance with respect to the voltage drop across it.
  • the first capacitor may, according to one embodiment, consist of a number of capacitors connected in parallel. Due to the number of capacitors, which may differ depending on the design of an energy transmission system, the size of the capacitance value of the first capacitor can be specified . As is known, the greater the number of capacitors connected in parallel, the greater the capacitance value. For use in the automotive environment for the transmission of energy to a secondary coil, the number is preferably between 30 and 40.
  • the decoupling element is according to another embodiment, an inductance. This ensures that an alternating current flowing via the first capacitor does not flow into the parallel path via the low-resistance DC voltage source.
  • the parallel circuit of the first capacitor and the series circuit of the DC voltage source and the decoupling element can be connected in series with a second capacitor.
  • the second capacitor is a frequency and voltage stable capacitor. The presence and dimensioning of the second capacitor depends on the maximum and minimum capacitance values to be achieved in the oscillatory system.
  • the capacitance value of the second Kondensa ⁇ tors smaller than the capacitance value of the first capacitor is selected. In this way, it is ensured in the series circuit of the first and the second capacitor that the voltage drop across the first capacitor voltage is so small that the capacitance value of the first capacitor does not vary on ⁇ due to the applied AC voltage. So would mean that the capacitance of the first con ⁇ densators could not be kept constant of.
  • the design of the capacitance values of the first oscillatory system is based on two criteria.
  • a first criterion assumes that the coupling between the first oscillatory system and the second oscillatable system is maximal.
  • the optimal offset 0
  • a second criterion is based on a minimum coupling between the coils of the first and second oscillatory systems.
  • a minimal coupling is given when the air gap is maximum and the offset between the coils of the first and the second oscillatory system is also maximum. In this case, the
  • the coupling factor between the first oscillatable system and the second oscillatable system is less than 50%.
  • the operating frequency of the first oscillatory system is in particular between 80 kHz and 90 kHz.
  • the invention further proposes an oscillatory system for transmitting energy to another weakly coupled oscillatory system comprising a resonant circuit having a frequency generator (current source), a first coil and a device of the type described above.
  • the adjustable capacitance value device serves to set a fixed operating frequency of the oscillatory system within a predetermined frequency range between 80 kHz and 90 kHz when the oscillatory system is used for inductive energy transmission in the environment of charging the electrified vehicle.
  • the invention provides an oscillatory system for receiving energy from another low coupled oscillatory system comprising a load, a second coil and an adjustable capacitance value device of the type described above.
  • an MPP Maximum Peak Power
  • a power transmission system which comprises a first oscillatory system and a second oscillatory system, which are coupled to an unknown weak coupling factor, wherein the first oscillatory system for transmitting energy to the other, second oscillatable system is a pre ⁇ with adjustable capacitance value for tuning the first oscillatory system.
  • the second oscillatable system may also have a device with an adjustable capacitance value for tuning the second resonant circuit in order to maximize the power that can be transmitted to the load using the MPP method.
  • a coupling factor When reference is made in the present description "not known" by a coupling factor, this is due to the fact the preferred application.
  • the preferred use of the power transmission system described here is the wireless charging electrified Fahrzeu ⁇ gen. This can, Depending on the parking situation of the vehicle comprising the secondary coil above a primary coil, eg in the floor of a parking space, the air gap (depending on the vehicle type) and the offset (depending on the parking situation) may vary.
  • FIG. 2 shows an electrical equivalent circuit diagram of a first embodiment variant of a device according to the invention with an adjustable capacitance value
  • Fig. 3 is an electrical equivalent circuit diagram of a second
  • Fig. 4 is an electrical equivalent circuit diagram of a third
  • Embodiment variant of a device according to the invention with adjustable capacitance value and
  • Fig. 5 is an electrical equivalent circuit diagram of a fourth
  • FIG. 1 shows a power transmission system known to the person skilled in the art, which comprises a first oscillatable system 10 and a second oscillatable system 20.
  • the first vibrating ⁇ capable system 10 includes a frequency generator 11 (chipboard source), a capacitor 12 having a capacitance value Ci and a coil 13 having an inductance Li.
  • the first oscillatory system 10 provides a primary coil system of a device for transferring energy to the second one
  • the first oscillatory system 10 may for example be embedded in the floor of a parking area or arranged at the bottom of the parking area.
  • the components of the second oscillatable system 20, which in addition to a load 21 (an energy storage) comprise a second capacitor 22 with a capacitance value C2 and a second coil 23 with an inductance L2, are integrated in a vehicle. If the vehicle is set to the parking area from ⁇ , the coil come to lie one above the other so that their coil 13 having a magnetic coupling to each other in dependence of the K Abstellsituation 23rd Due to the generally large air gap between the coils of the primary-side oscillatory system 10 and the secondary-side oscillatory system 20 in the range between 8 cm to 12 cm, coupling factors of typically less than 50% result.
  • the operating frequency of the oscillatory system 10 on the primary side results from the inductance Li of the coils 13, 23 formed by the primary-side and the secondary-side coils
  • Fig. 2 shows the most general embodiment of a variable capacity. Since a corresponding variable capacitance can be optionally provided in the second vibratory system 20, all embodiments of the va ⁇ ables capacity in Figs. 2 to 5 are denoted by the reference numerals 12, 22.
  • the variable capacitance 12, 22. 2 comprises as shown in FIG ers a ⁇ th capacitor C var whose capacity is dependent on a voltage and a DC voltage source DC var, the voltage applied to its terminals DC voltage is controllable.
  • a series circuit consisting of the DC voltage source DC var and a decoupling element L en tk designed as an inductance are connected in parallel in the first capacitor C var .
  • the first capacitor C var can be subjected to a variable bias voltage.
  • the voltage applied to the terminals of the DC voltage source DC var is set as a function of a desired operating frequency (between 80 kHz and 90 kHz) of the first oscillatory system 10.
  • the strong clamping ⁇ voltage dependence having first capacitor is thereby causing the desired capacitance value is set clamped by means of the variable DC power source DC var pre ⁇ .
  • the inductance L en tk is seen ⁇ before.
  • a control is used whose manipulated variable is the DC voltage.
  • the target value results from the desired Ar ⁇ beitsfrequenz of the first oscillatory system 10th
  • the embodiment of FIG. 3 differs from that of FIG. 2 only in that the first capacitor C var consists of a number of parallel-connected capacitors C var , i, C var , n .
  • the number of parallel Switched capacitors are chosen depending on the design of the power transmission system.
  • a second capacitor C fes is connected in series with the parallel circuit comprising the first capacitor C var and the series circuit comprising the DC voltage source DC var and the decoupling L en t k interconnected.
  • the second capacitor is frequency and voltage stable.
  • the capacitance value of the second capacitor C fes t is smaller than the capacitance value of the first capacitor C var .
  • the size of the capacitance value can be set by the number of capacitors of the first capacitor connected in parallel and the optional fixed capacitor. If, in addition, the second, frequency- and voltage-stable capacitor is provided, a very highly variable capacitance value can be realized.
  • the interpretation of the total capacity value is based on two criteria:
  • a first criterion assumes that the coupling between the first oscillatory system and the second oscillatable system is maximal.
  • offset 0
  • Leakage inductances of the two coils of the two resonant circuits smallest.
  • the overall capacitance value which results from the Ka ⁇ pazticianswert of the first capacitor and the optional EXISTING ⁇ those serially connected to the second capacitor is at a maximum.
  • a second criterion is based on a minimum coupling between the coils of the first and second oscillatory systems. A minimal coupling is given when the air gap is maximum and the offset between the Coils of the first and second oscillatory system is also maximum. In this case, the
  • the provision of the variable capacitance in the first oscillatory system serves to ensure a fixed operating frequency of the resonant converter at a changing load or in ⁇ productivity
  • the provision of a variable capacitance can be used in the second oscillatory system, the over to maximize the power transferable to the transformer.
  • the capacitance value of the second oscillatable system-after the operating frequency has been determined by setting the capacitance value in the first oscillatable system-can be varied in order to maximize the power transferable to the load 21 according to the MPP (Maximum Peak Power) method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un dispositif à valeur de capacité ajustable permettant d'accorder un premier système oscillant (10) qui est conçu pour un couplage à un second système oscillant (20) avec un facteur de couplage faible et inconnu. Le dispositif comprend un premier condensateur (Cvar) dont la capacité est fonction d'une tension, et une source de tension continue (DCvar) dont la tension présente au niveau de ses bornes peut être commandée, le montage en série composé de la source de tension continue (DCvar) et d'un élément de découplage (Lentk) étant monté en parallèle avec les bornes du condensateur pour soumettre le premier condensateur (Cvar) à une pré-tension variable. La tension continue présente au niveau des bornes de la source de tension continue (DCvar) est ajustée en fonction d'une fréquence de travail du premier système oscillant (10).
EP15763908.9A 2014-09-25 2015-09-15 Dispositif à valeur de capacité ajustable permettant d'accorder un système oscillant, système oscillant et système de transmission d'énergie Withdrawn EP3175533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014219374.5A DE102014219374A1 (de) 2014-09-25 2014-09-25 Vorrichtung mit einstellbarem Kapazitätswert zum Abstimmen eines schwingfähigen Systems, schwingfähiges System und Energieübertragungssystem
PCT/EP2015/071075 WO2016046023A1 (fr) 2014-09-25 2015-09-15 Dispositif à valeur de capacité ajustable permettant d'accorder un système oscillant, système oscillant et système de transmission d'énergie

Publications (1)

Publication Number Publication Date
EP3175533A1 true EP3175533A1 (fr) 2017-06-07

Family

ID=54145770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15763908.9A Withdrawn EP3175533A1 (fr) 2014-09-25 2015-09-15 Dispositif à valeur de capacité ajustable permettant d'accorder un système oscillant, système oscillant et système de transmission d'énergie

Country Status (5)

Country Link
US (1) US20170291495A1 (fr)
EP (1) EP3175533A1 (fr)
CN (1) CN107074121A (fr)
DE (1) DE102014219374A1 (fr)
WO (1) WO2016046023A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10320280B2 (en) * 2016-11-08 2019-06-11 Analog Devices Global Unlimited Company LC filter including coupled inductors for reducing ripple in switching power supplies
CN108819748B (zh) * 2018-06-13 2021-02-02 北京国电光宇新技术开发有限公司 一种电动汽车无线充电系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150958A1 (de) * 1981-12-23 1983-07-14 FTE maximal Fernsehtechnik und Elektromechanik GmbH & Co KG, 7130 Mühlacker Ukw-zimmerantenne
JPS6295333U (fr) * 1985-12-03 1987-06-18
US5285179A (en) * 1992-08-28 1994-02-08 Thomson Consumer Electronics, Inc. Double tuned circuit with balanced output and image trap
US5771148A (en) * 1995-11-17 1998-06-23 Motorola, Inc. Intercalation-based voltage variable capacitor
JP2001218120A (ja) * 2000-01-02 2001-08-10 Alps Electric Co Ltd ケーブルテレビジョン送信機の周波数変換回路
JP4888418B2 (ja) * 2008-02-29 2012-02-29 ソニー株式会社 可変容量素子とその制御方法、電子デバイス及び通信モバイル機器
CN103270671B (zh) * 2010-12-21 2016-02-24 矢崎总业株式会社 电力馈送系统
NZ593946A (en) * 2011-07-07 2014-05-30 Powerbyproxi Ltd An inductively coupled power transfer receiver
TW201405995A (zh) * 2012-07-24 2014-02-01 Powerwow Technology Inc 感應輸電設備及非接觸式感應輸電系統

Also Published As

Publication number Publication date
US20170291495A1 (en) 2017-10-12
CN107074121A (zh) 2017-08-18
WO2016046023A1 (fr) 2016-03-31
DE102014219374A1 (de) 2016-03-31

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