DE102010064314A1 - System for coupling at least one AC power source to a controllable energy storage and associated operating method - Google Patents
System for coupling at least one AC power source to a controllable energy storage and associated operating method Download PDFInfo
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- 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
- B60L53/20—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 converters located in the vehicle
- B60L53/24—Using the vehicle's propulsion converter for charging
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
- H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
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- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/40—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
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- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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- 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
- Y02T10/62—Hybrid vehicles
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- 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
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- 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
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- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Die Erfindung betrifft ein System zur Ankopplung mindestens einer Wechselstromquelle (9) an einen steuerbaren Energiespeicher (2), welcher der Steuerung und der elektrischen Energieversorgung einer n-phasigen elektrischen Maschine (1), mit n ≥ 1, dient. Dabei weist der steuerbare Energiespeicher (2) n parallele Energieversorgungszweige (3-1, 3-2, 3-3) auf, welche einerseits mit einer Bezugsschiene (T-) und andererseits mit jeweils einer Phase (U, V, W) der elektrischen Maschine (1) verbindbar sind. Mindestens eine n-phasige Wechselstromquelle (9) ist mit den einzelnen Energieversorgungszweigen (3-1, 3-2, 3-3) koppelbar.The invention relates to a system for coupling at least one alternating current source (9) to a controllable energy store (2), which is used to control and supply electrical energy to an n-phase electrical machine (1) with n ≥ 1. The controllable energy store (2) has n parallel energy supply branches (3-1, 3-2, 3-3), which on the one hand have a reference rail (T-) and on the other hand each have a phase (U, V, W) of the electrical ones Machine (1) can be connected. At least one n-phase alternating current source (9) can be coupled to the individual energy supply branches (3-1, 3-2, 3-3).
Description
Die Erfindung betrifft ein System zur Ankopplung mindestens einer Wechselstromquelle an einen steuerbaren Energiespeicher sowie ein Verfahren zum Betrieb des erfindungsgemäßen Systems.The invention relates to a system for coupling at least one AC source to a controllable energy store and to a method for operating the system according to the invention.
Stand der TechnikState of the art
Es zeichnet sich ab, dass in Zukunft sowohl bei stationären Anwendungen, wie z. B. Windkraftanlagen, wie auch in Fahrzeugen, wie Hybrid- oder Elektrofahrzeugen, vermehrt elektronische Systeme zum Einsatz kommen, die neue Energiespeichertechnologien mit elektrischer Antriebstechnik kombinieren. In herkömmlichen Anwendungen wird eine elektrische Maschine, welche z. B. als Drehfeldmaschine ausgeführt ist, über einen Umrichter in Form eines Wechselrichters gesteuert. Kennzeichnend für derartige Systeme ist ein sogenannter Gleichspannungszwischenkreis, über welchen ein Energiespeicher, in der Regel eine Batterie, an die Gleichspannungsseite des Wechselrichters angeschlossen ist. Um die für eine jeweilige Anwendung gegebenen Anforderungen an Leistung und Energie erfüllen zu können, werden mehrere Batteriezellen in Serie geschaltet. Da der von einem derartigen Energiespeicher bereitgestellte Strom durch alle Batteriezellen fließen muss und eine Batteriezelle nur einen begrenzten Strom leiten kann, werden oft zusätzlich Batteriezellen parallel geschaltet, um den maximalen Strom zu erhöhen.It is becoming apparent that in the future, both in stationary applications, such. As wind turbines, as well as in vehicles such as hybrid or electric vehicles, increasingly electronic systems are used, combining new energy storage technologies with electric drive technology. In conventional applications, an electrical machine, which z. B. is designed as a rotating field machine, controlled by a converter in the form of an inverter. Characteristic of such systems is a so-called DC voltage intermediate circuit, via which an energy store, usually a battery, is connected to the DC side of the inverter. In order to meet the power and energy requirements of each application, multiple battery cells are connected in series. Since the power provided by such an energy store must flow through all the battery cells and a battery cell can only conduct a limited current, battery cells are often additionally connected in parallel in order to increase the maximum current.
Die Serienschaltung mehrerer Batteriezellen bringt neben einer hohen Gesamtspannung das Problem mit sich, dass der gesamte Energiespeicher ausfällt, wenn eine einzige Batteriezelle ausfällt, weil dann kein Batteriestrom mehr fließen kann. Ein solcher Ausfall des Energiespeichers kann zu einem Ausfall des Gesamtsystems führen. Bei einem Fahrzeug kann ein Ausfall der Antriebsbatterie zum ”Liegenbleiben” des Fahrzeugs führen. Bei anderen Anwendungen, wie z. B. der Rotorblattverstellung von Windkraftanlagen, kann es bei ungünstigen Rahmenbedingungen, wie z. B. starkem Wind, sogar zu sicherheitsgefährdenden Situationen kommen. Daher ist stets eine hohe Zuverlässigkeit des Energiespeichers anzustreben, wobei mit ”Zuverlässigkeit” die Fähigkeit eines Systems bezeichnet wird, für eine vorgegebene Zeit fehlerfrei zu arbeiten.The series connection of several battery cells in addition to a high total voltage involves the problem that the entire energy storage fails if a single battery cell fails, because then no battery power can flow. Such a failure of the energy storage can lead to a failure of the entire system. In a vehicle, failure of the traction battery can result in the vehicle "stalling". For other applications, such as. B. the rotor blade adjustment of wind turbines, it may be in unfavorable conditions such. B. strong wind, even come to safety-threatening situations. Therefore, a high reliability of the energy storage is always desirable, with "reliability" is the ability of a system to work for a given time error-free.
In den älteren Anmeldungen
Sollen derartige Batterien z. B. in Elektrofahrzeugen eingesetzt werden, ist zu beachten, dass heute verfügbare Batterietechnologien die Reichweite der Elektrofahrzeuge erheblich limitieren.Should such batteries z. As used in electric vehicles, it should be noted that currently available battery technologies significantly limit the range of electric vehicles.
Offenbarung der ErfindungDisclosure of the invention
Die vorliegende Erfindung schafft ein System zur Ankopplung mindestens einer Wechselstromquelle an einen steuerbaren Energiespeicher, welcher der Steuerung und der elektrischen Energieversorgung einer n-phasigen elektrischen Maschine, mit n ≥ 1, dient. Der steuerbare Energiespeicher weist dabei n parallele Energieversorgungszweige auf, welche einerseits mit einer Bezugsschiene und andererseits mit jeweils einer Phase der elektrischen Maschine verbindbar sind. Zur Einspeisung von elektrischer Energie ist mindestens eine n-phasige Wechselstromquelle vorgesehen, welche mit den einzelnen Energieversorgungszweigen koppelbar ist.The present invention provides a system for coupling at least one AC source to a controllable energy store, which serves the control and the electrical power supply of an n-phase electric machine, with n ≥ 1. The controllable energy storage in this case has n parallel power supply branches, which are connectable on the one hand with a reference rail and on the other hand, each with a phase of the electric machine. For the supply of electrical energy at least one n-phase AC power source is provided, which can be coupled to the individual power supply branches.
Die vorliegende Erfindung schafft außerdem ein Verfahren zum Betrieb eines erfindungsgemäßen Systems, wobei zur Unterstützung der Energieversorgung der elektrischen Maschine und/oder zum Laden des steuerbaren Energiespeichers die mindestens eine Wechselstromquelle mit den einzelnen Energieversorgungszweigen des steuerbaren Energiespeichers gekoppelt wird.The present invention also provides a method for operating a system according to the invention, wherein the at least one alternating current source is coupled to the individual energy supply branches of the controllable energy store in order to support the power supply of the electrical machine and / or to charge the controllable energy store.
Vorteile der ErfindungAdvantages of the invention
Durch die erfindungsgemäße Ankopplung einer zusätzlichen Wechselstromquelle an den steuerbaren Energiespeicher ist es möglich, zusätzliche elektrische Energie zur Verfügung zu stellen und auf diese Weise zum Beispiel die Reichweite eines Elektrofahrzeugs erheblich zu verlängern. Die zur Verfügung gestellte Energie kann dabei je nach aktuellem Betriebszustand des steuerbaren Energiespeichers und der elektrischen Maschine entweder zum Laden von Energiespeicherzellen der steuerbaren Energiequelle oder zur Unterstützung der steuerbaren Energiequelle bei der Energieversorgung der elektrischen Maschine genutzt werden. Das erfindungsgemäße System zeichnet sich dabei insbesondere durch eine einfach realisierbare und damit kostengünstige Schaltungstopologie aus.The inventive coupling of an additional AC source to the controllable energy storage, it is possible to provide additional electrical energy available and to extend in this way, for example, the range of an electric vehicle significantly. Depending on the current operating state of the controllable energy store and the electrical machine, the energy provided can either be used to charge energy storage cells of the controllable energy source or to support the controllable energy source Energy source can be used in the power supply of the electrical machine. The system according to the invention is characterized in particular by an easily realizable and therefore cost-effective circuit topology.
Um einen Betrieb der elektrischen Maschine und des steuerbaren Energiespeichers auch ohne Unterstützung der Wechselstromquelle zu ermöglichen, sind gemäß einer Ausführungsform der Erfindung steuerbare Schaltelemente vorgesehen, mit deren Hilfe die mindestens eine Wechselstromquelle mit den einzelnen Energieversorgungszweigen koppelbar istIn order to enable operation of the electric machine and the controllable energy storage even without the support of the AC power source, controllable switching elements are provided according to an embodiment of the invention, with the aid of which at least one AC power source can be coupled to the individual power supply branches
Gemäß einer Ausführungsform der Erfindung ist die Wechselstromquelle, insbesondere mit Hilfe der steuerbaren Schaltelemente, parallel zu den Energieversorgungszweigen des steuerbaren Energiespeichers schaltbar. Liegt der von der elektrischen Maschine benötigte Strom über dem von der Wechselstromquelle zur Verfügung gestellten Wert, gleicht der steuerbare Energiespeicher die Differenz aus. Im umgekehrten Fall nimmt der steuerbare Energiespeicher die Differenz auf, wodurch Energiespeicherzellen des steuerbaren Energiespeichers durch die Wechselstromquelle geladen werden.According to one embodiment of the invention, the alternating current source, in particular with the aid of the controllable switching elements, can be connected in parallel with the energy supply branches of the controllable energy store. If the current required by the electrical machine is above the value provided by the AC power source, the controllable energy store compensates for the difference. In the opposite case, the controllable energy storage takes on the difference, whereby energy storage cells of the controllable energy storage are charged by the AC power source.
Eine ähnliche Wirkung kann erzielt werden, wenn die mindestens eine Wechselstromquelle, insbesondere mit Hilfe der steuerbaren Schaltelemente, nicht parallel, sondern in Reihe zu den Energieversorgungszweigen des steuerbaren Energiespeichers geschaltet werden kann. Über Energiespeicherzellen des steuerbaren Energiespeichers wird die Differenz zwischen der an der elektrischen Maschine gewünschten Phasenspannung und der von der Wechselstromquelle zur Verfügung gestellten Spannung eingestellt. Damit kann der steuerbare Energiespeicher die Wechselstromquelle unterstützen oder die Energiespeicherzellen des steuerbaren Energiespeichers können mit Hilfe der Wechselstromquelle geladen werden. Dabei können die Phasenspannungen der elektrischen Maschine von den Phasenspannungen der Wechselstromquelle sowohl bezüglich Amplitude als auch Frequenz verschieden sein.A similar effect can be achieved if the at least one alternating current source, in particular with the aid of the controllable switching elements, can not be connected in parallel, but in series with the energy supply branches of the controllable energy store. About energy storage cells of the controllable energy storage, the difference between the desired voltage at the electrical machine phase voltage and the voltage provided by the AC power source is set. Thus, the controllable energy storage can support the AC power source or the energy storage cells of the controllable energy storage can be loaded using the AC power source. In this case, the phase voltages of the electric machine may be different from the phase voltages of the alternating current source both in terms of amplitude and frequency.
Eine besonders effiziente Energieeinspeisung bei hoher Verfügbarkeit lässt sich erreichen, wenn die Wechselstromquelle einen Reichweitenverlängerer (range extender) mit einem durch einen Verbrennungsmotor angetrieben Wechselstromgenerator umfasst.Highly efficient, high energy input can be achieved when the AC source includes a range extender with an alternator driven by an internal combustion engine.
Alternativ oder zusätzlich können aber auch beliebige andere Wechselstromquellen, wie z. B. ein beliebiges dreiphasiges Netz, insbesondere das öffentliche Netz, genutzt werden.Alternatively or additionally, but also any other AC sources, such. B. any three-phase network, in particular the public network, are used.
Eine weitere Ausführungsform der Erfindung sieht vor, dass die Energieversorgungszweige des steuerbaren Energiespeichers jeweils mindestens zwei in Reihe geschaltete Energiespeichermodule aufweisen, welche jeweils mindestens eine elektrische Energiespeicherzelle mit einer zugeordneten steuerbaren Koppeleinheit umfassen, welche in Abhängigkeit von Steuersignalen die jeweils zugeordneten Energiespeicherzellen überbrückt oder die jeweils zugeordneten Energiespeicherzellen in den jeweiligen Energieversorgungszweig schaltet. Durch eine derartige Ausgestaltung lässt sich die Doppelfunktion des steuerbaren Energiespeichers, nämlich Steuerung und Energieversorgung der elektrischen Maschine auf besonders einfache und effiziente Art realisieren.A further embodiment of the invention provides that the energy supply branches of the controllable energy store each have at least two energy storage modules connected in series, which each comprise at least one electrical energy storage cell with an associated controllable coupling unit which bridges the respective associated energy storage cells depending on control signals or the respective associated energy storage cells Energy storage cells in the respective power supply branch switches. By such a configuration, the dual function of the controllable energy storage, namely control and power supply of the electric machine can be realized in a particularly simple and efficient way.
Bei einer derartigen Ausgestaltung des steuerbaren Energiespeichers besteht auch die Möglichkeit, die Wechselstromquelle mit jeweils einem Anschlusspunkt in dem jeweiligen Energieversorgungszweig zu verbinden, wobei die jeweiligen Anschlusspunkte zwischen zwei Energiespeichermodulen des jeweiligen Energieversorgungszweiges liegen. Die Koppeleinheit mindestens eines zwischen dem jeweiligen Anschlusspunkt und der Bezugsschiene liegenden Energiespeichermoduls kann dabei jeweils als steuerbares Schaltelement für den betreffenden Energieversorgungszweig genutzt werden. Dabei kann die gemeinsame Verbindung der Energieversorgungszweige mit Hilfe dieser Koppeleinheiten aufgetrennt werden und auf diese Weise die Wechselstromquelle in Reihe zu den darüber liegenden Energiespeichermodulen geschaltet werden. Auch diese Reihenschaltung stellt eine Kopplung der Wechselstromquelle mit den einzelnen Energieversorgungszweigen im Sinne der Anmeldung dar.In such an embodiment of the controllable energy storage, it is also possible to connect the alternating current source to a respective connection point in the respective energy supply branch, wherein the respective connection points lie between two energy storage modules of the respective energy supply branch. The coupling unit of at least one lying between the respective connection point and the reference rail energy storage module can be used in each case as a controllable switching element for the relevant power supply branch. In this case, the common connection of the power supply branches can be separated by means of these coupling units and in this way the AC power source can be connected in series with the overlying energy storage modules. This series circuit also represents a coupling of the AC power source with the individual power supply branches in the sense of the application.
Da die Wechselstromquelle bei dieser Ausführungsform nur zu den zwischen dem jeweiligen Anschlusspunkt und den Phasen der elektrischen Maschine liegenden Energiespeichermodulen in Serie geschaltet wird, ist es vorteilhaft, die Anschlusspunkte jeweils auf der, der Bezugsschiene abgewandten Seite des unmittelbar mit der Bezugsschiene verbundenen Energiespeichermoduls vorzusehen, so dass bei Ankopplung der Wechselstromquelle pro Energieversorgungszweig jeweils nur ein einziges Energiespeichermodul wirkungslos wird.Since the AC power source in this embodiment is connected in series only to the lying between the respective connection point and the phases of the electric machine energy storage modules, it is advantageous to provide the connection points respectively on the side facing away from the reference rail side of the directly connected to the reference rail energy storage module, so that when coupling the AC power source per energy supply branch in each case only a single energy storage module is ineffective.
Weitere Merkmale und Vorteile von Ausführungsformen der Erfindung ergeben sich aus der nachfolgenden Beschreibung mit Bezug auf die beigefügten Zeichnungen.Further features and advantages of embodiments of the invention will become apparent from the following description with reference to the accompanying drawings.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:Show it:
Die
Die Koppeleinheiten
Die Gesamt-Ausgangsspannungen der Energieversorgungszweige
Die Koppeleinheiten
Die elektrische Maschine
Die elektrische Maschine
In den dargestellten Ausführungsbeispielen weist jedes Energiespeichermodul
In den dargestellten Ausführungsbeispielen werden die Koppeleinheiten
Zur Unterstützung der Energieversorgung der elektrischen Maschine
Die Wechselstromquelle
Gemäß einer in
Die Regelung der Drehzahl des Wechselstromgenerators
Gemäß einer zweiten Ausführungsform der Erfindung, welche in
Über die Energiespeicherzellen
Grundsätzlich ist es auch möglich die Anschlusspunkte A1, A2 und A3 an einer anderen Stelle in dem jeweiligen Energieversorgungszweig
In einer nicht eigens dargestellten weiteren Ausführungsform ist es auch möglich, die Phasen der Wechselstromquelle
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102010027857 [0004, 0028] DE 102010027857 [0004, 0028]
- DE 102010027861 [0004, 0028] DE 102010027861 [0004, 0028]
Claims (10)
Priority Applications (2)
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DE102010064314A DE102010064314A1 (en) | 2010-12-29 | 2010-12-29 | System for coupling at least one AC power source to a controllable energy storage and associated operating method |
PCT/EP2011/070108 WO2012089397A2 (en) | 2010-12-29 | 2011-11-15 | System for coupling at least one ac power source to a controllable energy store and associated operational method |
Applications Claiming Priority (1)
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DE102010064314A DE102010064314A1 (en) | 2010-12-29 | 2010-12-29 | System for coupling at least one AC power source to a controllable energy storage and associated operating method |
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DE102010064314A1 true DE102010064314A1 (en) | 2012-07-05 |
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DE102012207809A1 (en) | 2012-05-10 | 2013-11-14 | Robert Bosch Gmbh | Range extender, drive and motor vehicle |
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DE102014202410A1 (en) * | 2014-02-11 | 2015-08-13 | Robert Bosch Gmbh | Power supply device for an electrically operable vehicle and method for charging |
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DE102010027861A1 (en) | 2010-04-16 | 2011-10-20 | Sb Limotive Company Ltd. | Coupling unit and battery module with integrated pulse inverter and exchangeable cell modules |
DE102010027857A1 (en) | 2010-04-16 | 2011-10-20 | Sb Limotive Company Ltd. | Coupling unit and battery module with integrated pulse inverter and increased reliability |
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US5670861A (en) * | 1995-01-17 | 1997-09-23 | Norvik Tractions Inc. | Battery energy monitoring circuits |
JP3741171B2 (en) * | 1996-06-17 | 2006-02-01 | 株式会社安川電機 | Multiple pulse width modulation power converter |
US7224132B2 (en) * | 2004-01-22 | 2007-05-29 | Wavecrest Laboratories, Llc. | Portable range extender operable in automatic and manual modes |
DE102005045107A1 (en) * | 2005-09-21 | 2007-03-29 | Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg | Charging method for extending the life of batteries and apparatus for carrying it out |
DE102009000674A1 (en) * | 2009-02-06 | 2010-08-12 | Robert Bosch Gmbh | Traction battery with increased availability |
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2010
- 2010-12-29 DE DE102010064314A patent/DE102010064314A1/en active Pending
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2011
- 2011-11-15 WO PCT/EP2011/070108 patent/WO2012089397A2/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102010027861A1 (en) | 2010-04-16 | 2011-10-20 | Sb Limotive Company Ltd. | Coupling unit and battery module with integrated pulse inverter and exchangeable cell modules |
DE102010027857A1 (en) | 2010-04-16 | 2011-10-20 | Sb Limotive Company Ltd. | Coupling unit and battery module with integrated pulse inverter and increased reliability |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102012207809A1 (en) | 2012-05-10 | 2013-11-14 | Robert Bosch Gmbh | Range extender, drive and motor vehicle |
US9127592B2 (en) | 2012-05-10 | 2015-09-08 | Robert Bosch Gmbh | Range extender, drive and motor vehicle |
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WO2012089397A2 (en) | 2012-07-05 |
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