DE2536626A1 - THREE-PHASE INVERTER - Google Patents
THREE-PHASE INVERTERInfo
- Publication number
- DE2536626A1 DE2536626A1 DE19752536626 DE2536626A DE2536626A1 DE 2536626 A1 DE2536626 A1 DE 2536626A1 DE 19752536626 DE19752536626 DE 19752536626 DE 2536626 A DE2536626 A DE 2536626A DE 2536626 A1 DE2536626 A1 DE 2536626A1
- Authority
- DE
- Germany
- Prior art keywords
- pulse train
- voltage source
- inverter according
- oscillator
- inverter
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
- H02M7/53846—Control circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- General Induction Heating (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Ac-Ac Conversion (AREA)
Description
Dipl. Phys. Or. re>\ nat. Wolf gang Kern peDipl. Phys. Or. Re> \ nat. Wolfgang Kern pe
D-68OO Mannheim 1 ο β, 10 D-68OO Mannheim 1 ο β, 10
Postfach 1273P.O. Box 1273
15. August 1975 Mc 1715th August 1975 Mc 17
KGEL LIMITEDKGEL LIMITED
Kennedy Tower, St.Chads Queensway Birmingham B4 6EL, GroßbritannienKennedy Tower, St Chad's Queensway Birmingham B4 6EL, UK
' Dr e iphäs ig er' Wechs eTrichter "'Three-layer' change funnel "
Die Erfindung bezieht sich auf einen dreiphasigen Wechselrichtermit einem ersten, einem zweiten und einem dritten Leistungsschalter und einer ersten, einer zweiten und einer dritten Gleichspannungsquelle»The invention relates to a three-phase inverter with a first, a second and a third circuit breaker and a first, a second and a third DC voltage source »
Derartige Wechselrichter werden benötigt, wenn eine dreiphasige Last, beispielsweise ein Motor, aus einer Gleichstromquelle versorgt werden soll,Such inverters are required when a three-phase load, for example a motor, is supplied from a direct current source shall be,
609885/0665609885/0665
Konten: Deutsche Bank Mannhelm 95/Ο953Ο · Stadtsparkasse Mannheim 7496 896 Privatanschrift: 694 Weinhelm · HolbelnatraBe S · Fernsprecher CO 62 OD 7 3212Accounts: Deutsche Bank Mannhelm 95 / Ο953Ο · Stadtsparkasse Mannheim 7496 896 Private address: 694 Weinhelm HolbelnatraBe S Telephone CO 62 OD 7 3212
In den britischen Patentschriften 1 402 321 und 1 402 322 ist ein batteriegetriebenes Fahrzeug mit einem Induktionsmotor beschrieben, der über einen Wechselrichter aus einer Batterie gespeist wird« Ein Wechselrichter nach der vorliegenden Erfindung ist in einem solchen Fall dann nützlich, wenn der Induktionsmotor ein dreiphasiger Induktionsmotor sein muß.British patents 1,402,321 and 1,402,322 describe a battery-powered vehicle with an induction motor, which is fed from a battery via an inverter «An inverter according to the present invention is useful in such a case when the induction motor must be a three-phase induction motor.
Die meisten bekannten dreiphasigen Wechselrichter weisen sechs oder mehr Leistungschalter auf, die entweder Thyristoren oder Transistoren sind. Jeder dieser Leistungsschalter erfordert einen ihm zugeschalteten elektronischen Steuerkreis und es gilt auch hier, daß die Betriebssicherheit in dem Maße abnimmt, wie die Anzahl der Bauteile zunimmt.Most known three-phase inverters have six or more power switches, either thyristors or Transistors are. Each of these circuit breakers requires an electronic control circuit connected to it and it also applies here that the operational reliability decreases as the number of components increases.
Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, einen dreiphasigen Wechselrichter zu entwickeln, der relativ wenige Bauteile benötigt.The present invention is therefore based on the object of developing a three-phase inverter that is relatively few components required.
Diese Aufgabe wird bei einem dreiphasigen Wechselrichter der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß der erste Leistungsschalter und die erste Gleichspannungsquelle in Reihe zwischen einer ersten und einer zweiten Anschlußklemme, der zweite Leistungsschalter und die zweite Gleichspannungsquelle in Reihe zwischen der zweiten und einer dritten Anschlußklemme und der dritte Leistungsschalter und die dritte Gleichspannungsquelle in Reihe zwischen der dritten und der ersten Anschlußklemme liegen.This object is achieved according to the invention in a three-phase inverter of the type described in that the first power switch and the first DC voltage source in series between a first and a second connection terminal, the second power switch and the second DC voltage source in series between the second and a third connection terminal and the third circuit breaker and the third DC voltage source are in series between the third and the first connection terminal.
609885/066S609885 / 066S
253662B253662B
Nach einem weiteren Vorschlag der Erfindung können dabei die drei Phasen einer dreiphasigen Last einerseits an die drei Anschlußklemmen und andererseits an einen neutralen Schaltungspunkt angeschlossen werden. Alternativ können die drei Phasen der Primärwicklung eines dreiphasigen Transformators in Reihe mit den drei Leistungsschaltern geschaltet werden. Ein derartiger Transformator würde allerdings schwer und teuer werden .According to a further proposal of the invention, the three phases of a three-phase load can be connected on the one hand to the three connection terminals and on the other hand to a neutral circuit point. Alternatively, the three phases the primary winding of a three-phase transformer can be connected in series with the three circuit breakers. One of those However, the transformer would be heavy and expensive.
Um zu ermöglichen, daß der erfindungsgemäße Wechselrichter mit einer induktiven Last betrieben wird, wird in einer zweckmäßigen Weiterbildung der Erfindung vorgeschlagen, daß über jeden der drei Leistungsschalter eine Preilaufdiode antiparallel geschaltet ist*To enable the inverter according to the invention with an inductive load is operated, it is proposed in an expedient development of the invention that over each of the three circuit breakers a pre-run diode is connected in anti-parallel *
Vorzugsweise sind die Leistungsschalter Transistoren,Preferably the power switches are transistors,
Es ist selbstverständlich auch möglich,Thyristoren als Leistungsschalter zu verwenden; aber es hat sich gezeigt', daß die notwendige Beschaltung derartiger Thyristoren sehr umfangreich ist, wenn die Last induktiv ist.It is of course also possible to use thyristors as power switches to use; But it has been shown that the necessary wiring of such thyristors is very extensive, when the load is inductive.
Weitere Einzelheiten der Erfindung sind in den Unteransprüchen angegeben und werden nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben und erläutert.Further details of the invention are given in the subclaims and are illustrated below with reference to one in the drawing illustrated embodiment described and explained in more detail.
Es zeigen;Show it;
Fig, 1 einen. Schaltplan eines erfindungsgemäßen Wechselrichters mit angeschlossener Last;Fig, 1 a. Circuit diagram of an inverter according to the invention with connected load;
B0988B/0665B0988B / 0665
Fig. 2 zeit- Diagramme der Impulsfolgen und Schwinjangsfor- und 3 men innerhalb des Wechselrichter gem. Fig. 1 unter unterschiedlichen Bedingungen undFig. 2 time diagrams of the pulse trains and Schwinjangsfor- and 3 men within the inverter according to Fig. 1 under different conditions and
Fig. 4 ein Blockschaltbild eines Steuerkreises für den Wechselrichter gem. Fig. 1.4 is a block diagram of a control circuit for the inverter according to Fig. 1.
Der erfindungsgemäße Wechselrichter gem. Fig. 1 ist in Dreieckschaltung aufgebautj die drei Arme des Dreiecks sind mit A, B bzw, C bezeichnet. Der Arm A besteht aus einem Leistungsschalter in Form eines Transistors 1, der in Reihe mit einer Batterie 2 zwischen zwei Anschlußklemmen 3 und 4 liegt. Eine Freilaufdiode 5 ist antiparallel über dem Transistor 1 geschaltet. The inverter according to the invention according to FIG. 1 is in a delta connection j the three arms of the triangle are with A, B and C respectively. Arm A consists of a circuit breaker in the form of a transistor 1 which is in series with a battery 2 between two terminals 3 and 4. One Freewheeling diode 5 is connected in anti-parallel across transistor 1.
Der Arm B besteht aus einem Leistungsschalter in Form eines Leistungstransistors 6, der in Reihe mit einer Gleichstrombatterie 7 zwischen der Anschlußklemme 4 und einer Anschlußklemme 8 liegt. Über den Transistor 6 ist ebenfalls eine Freilaufdiode 9 antiparallel geschaltet. Der Arm C schließlich besteht aus einem Leistungsschalter in Form eines Transistors 10, der in Reihe mit einer Batterie 11 zwischen den Anschlußklemmen 3 und 8 liegt. Auch über dem Leistungstransistor 10 ist eine Freilaufdiode 12 antiparallel geschaltet. Es ist leicht ersichtlich, daß die entsprechenden Bauteile eines jeden Armes im selben Richtungssinn geschaltet sind, so daß ein Kurzschluß innerhalb der Dreiecksschaltung entstehen würde, wenn alle Transistoren 1, 6 und 10 zur gleichen Zeit stromleitend würden. Auch die Batterien 2, 7 und 11 sind alle im gleichen Richtungssinn geschaltet, so daß Strom durch die zugeordneten Transisto- The arm B consists of a power switch in the form of a power transistor 6, which is in series with a DC battery 7 is between the terminal 4 and a terminal 8. A freewheeling diode is also located across the transistor 6 9 connected anti-parallel. Finally, the arm C consists of a circuit breaker in the form of a transistor 10, which is in series with a battery 11 between the terminals 3 and 8 lies. A freewheeling diode 12 is also connected in anti-parallel across the power transistor 10. It is easy to see that the corresponding components of each arm are connected in the same sense of direction, so that a short circuit would arise within the delta connection if all transistors 1, 6 and 10 were conductive at the same time. Batteries 2, 7 and 11 are all connected in the same sense of direction, so that current through the assigned transistor
809885/0665809885/0665
ren 1, 6 bzw. 10 fließen kann.Ren 1, 6 or 10 can flow.
Eine mit 13, 14 und 15 bezeichnete dreiphasige Last ist einerseits an die Anschlußklemmen 3, 4 und 8 und andererseits an einen neutralen Schaltungspunkt 16 angeschlossen.A three-phase load labeled 13, 14 and 15 is on the one hand connected to terminals 3, 4 and 8 and, on the other hand, to a neutral circuit point 16.
Wenn der Transistor 1 in seinen stromleitenden Zustand überführt ist, fließt Strom von der positiven Klemme der Batterie 2 über den Transistor 1, die Last 13 und die Last 14 zur negativen Klemme der Batterie 2. Entsprechend wird jeweils zwei Phasen der Last Strom zugeführt, wenn irgend einer der anderen beiden Transistoren 6 oder 10 in seinen stromleitenden Zustand gebracht wird. Zwei der drei Transistoren 1,6 und 10 können gleichzeitig stromleitend werden, wobei allen drei Phasen der Last 13, 14 und 15 gleichzeitig Strom zugeführt wird; aber alle drei Transistoren dürfen nicht gleichzeitig stromleitend werden, da dann ein Kurzschluß im Wechselrichter auftritt.When the transistor 1 is brought into its current-conducting state, current flows from the positive terminal of the battery 2 the transistor 1, the load 13 and the load 14 to the negative terminal of the battery 2. Correspondingly, two phases in each case the load is supplied with current when any of the other two transistors 6 or 10 brought into its current-conducting state will. Two of the three transistors 1, 6 and 10 can be conductive at the same time, with all three phases of the Load 13, 14 and 15 is supplied with power at the same time; but all three transistors must not be conductive at the same time, because then a short circuit occurs in the inverter.
Während des Betriebes des Wechselrichters werden die Schalter 1, 6 und 10 in der Folge ABCA usw. für gleiche Zeitdauern geschlossen. In Fig. 2a sind die Betriebszeiten der Schalter dargestellt für eine Einschaltzeit von 15% einer Wiederholungsperiode für jeden der Arme A, B und C.While the inverter is in operation, switches 1, 6 and 10 in the sequence ABCA etc. closed for the same time periods. 2a shows the operating times of the switches for a switch-on time of 15% of a repetition period for each of arms A, B and C.
Fig, 2b zeigt den Strom, der durch einen dieser Arme bei ohmscher Belastung fließt, während Fig. 2c den Strom zeigt, der durch einen dieser Arme bei induktiver Belastung fließt.Fig, 2b shows the current that flows through one of these arms with an ohmic load, while Fig. 2c shows the current that flows through one of these arms under inductive loading.
Die Darstellung gem. Fig, 3 entspricht derjenigen gem. Fig, 2, jedoch beträgt hier die Einschaltzeit 2/3 der gesamten Periode. Dies ist die größtmögliche Einschaltdauer, da längere Impulse zu einem Kurzschluß in der Dreiecksschaltung führen würden.The representation according to FIG. 3 corresponds to that according to FIG. 2, however, the switch-on time here is 2/3 of the entire period. This is the longest possible duty cycle, since the pulses are longer would lead to a short circuit in the delta connection.
609885/0 66609885/0 66
Die Spannungssteuerung kann auf zwei Wegen erreicht werden, die auch zusammen angewendet werden können. Einmal kann die Impulslänge zwischen den beiden Extremwerten, wie sie in den Fig. 2 und 3 dargestellt sind, verändert werden. Es ist jedoch vorzuziehen, daß die Grundimpulslänge ständig auf ihrem möglichen Maximum gehalten wird, wie es in Fig. 3 dargestellt ist, und daß die Schalter 1, 6 und 10 nach diesem Grundschema ein- und ausgeschaltet werden. Zu diesem Zweck ist ein Oszillator 20 vorgesehen (Fig. 4), der drei Ausgangsimpulse erzeugt, von denen jeder ein Verhältnis von Einschalt- zu Ausschaltzeit von 2:1 aufweist, d, h. eine Einschaltzeit von 24O°el innerhalb einer vollen Periode von 36O°el. Die drei Ausgangsimpulsfolgen sind untereinander um 120 el phasenverschoben und werden entsprechend den Eingängen von 3 UND-Gliedern 21, 22 und 23 zugeführt, deren Ausgänge mit den Basen der Transistoren 1 bzw. 6 bzw. 10 verbunden sind. Jedes der drei UND-Glieder 21, 22 und 23 besitzt zwei Eingänge; der andere der beiden Eingänge empfängt das Ausgangssignal eines Modulators 24, der einen relativ hochfrequenten Ausgangsimpuls mit einem veränderbaren Signal-Abstand—Verhältnis erzeugt. Der Modulatorausgang kann durch eine Steuerspannung auf einer Leitung 25 und die Gesamtfrequenz des Wechselrichterausganges durch ein&ignal auf einer Leitung 26 gesteuert werden, welche letztere mit dem Oszillator 20 verbunden ist, der die drei Ausgangsimpulsfolgen erzeugt.Voltage control can be achieved in two ways, which can also be used together. Once she can Pulse length between the two extreme values as shown in the Figs. 2 and 3 are shown, can be changed. It is preferable, however, that the basic pulse length is constantly on its possible maximum is held, as shown in Fig. 3, and that the switches 1, 6 and 10 according to this basic scheme can be switched on and off. For this purpose an oscillator 20 is provided (Fig. 4), which generates three output pulses, each of which has an on-to-off time ratio of 2: 1, i.e. a switch-on time of 24O ° el within a full period of 360 ° el. The three output pulse trains are phase shifted by 120 el and are corresponding to the inputs of 3 AND gates 21, 22 and 23, the outputs of which are connected to the bases of the transistors 1 and 6 and 10, respectively. Each of the three AND gates 21, 22 and 23 have two inputs; the other of the two inputs receives the output signal of a modulator 24, which has a relatively high-frequency output pulse a changeable signal-to-distance ratio. The modulator output can through a control voltage on a line 25 and the total frequency of the inverter output a & ignal can be controlled on a line 26, the latter is connected to the oscillator 20, which the three output pulse trains generated.
6098ÖS/066S6098ÖS / 066S
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29692/75A GB1543581A (en) | 1975-07-15 | 1975-07-15 | Three-phase inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2536626A1 true DE2536626A1 (en) | 1977-02-03 |
Family
ID=10295598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752536626 Ceased DE2536626A1 (en) | 1975-07-15 | 1975-08-16 | THREE-PHASE INVERTER |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS5210515A (en) |
| AR (1) | AR207371A1 (en) |
| AT (1) | AT342712B (en) |
| BE (1) | BE832861A (en) |
| BR (1) | BR7506698A (en) |
| CA (1) | CA1033807A (en) |
| CH (1) | CH586969A5 (en) |
| DE (1) | DE2536626A1 (en) |
| DK (1) | DK364675A (en) |
| EG (1) | EG13428A (en) |
| ES (1) | ES440798A1 (en) |
| FI (1) | FI761222A (en) |
| FR (1) | FR2318529A1 (en) |
| GB (1) | GB1543581A (en) |
| IE (1) | IE42607B1 (en) |
| IT (1) | IT1047975B (en) |
| LU (1) | LU73254A1 (en) |
| NL (1) | NL7510335A (en) |
| NO (1) | NO138232C (en) |
| SE (1) | SE418438B (en) |
| SU (1) | SU637105A3 (en) |
| ZA (1) | ZA755538B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7643733B2 (en) | 2007-07-27 | 2010-01-05 | Gm Global Technology Operations, Inc. | Control device for driving a brushless DC motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1513851C3 (en) * | 1966-03-31 | 1975-09-18 | Brown, Boveri & Cie Ag, 6800 Mannheim | Device for voltage regulation of a converter arrangement for feeding electrical machines |
| US3681676A (en) * | 1971-04-21 | 1972-08-01 | Gen Motors Corp | Cycloconverter silicon controlled rectifier gate signal inhibit circuit |
-
1975
- 1975-01-01 AR AR260285A patent/AR207371A1/en active
- 1975-07-15 GB GB29692/75A patent/GB1543581A/en not_active Expired
- 1975-08-12 DK DK364675A patent/DK364675A/en unknown
- 1975-08-16 DE DE19752536626 patent/DE2536626A1/en not_active Ceased
- 1975-08-21 AT AT646875A patent/AT342712B/en not_active IP Right Cessation
- 1975-08-26 LU LU73254A patent/LU73254A1/xx unknown
- 1975-08-26 FR FR7526255A patent/FR2318529A1/en active Granted
- 1975-08-27 CH CH1109275A patent/CH586969A5/xx not_active IP Right Cessation
- 1975-08-28 BE BE159562A patent/BE832861A/en unknown
- 1975-08-28 IE IE1882/75A patent/IE42607B1/en unknown
- 1975-08-29 ZA ZA00755538A patent/ZA755538B/en unknown
- 1975-09-01 SU SU752168206A patent/SU637105A3/en active
- 1975-09-02 NL NL7510335A patent/NL7510335A/en not_active Application Discontinuation
- 1975-09-03 IT IT69203/75A patent/IT1047975B/en active
- 1975-09-08 ES ES440798A patent/ES440798A1/en not_active Expired
- 1975-09-09 CA CA235,082A patent/CA1033807A/en not_active Expired
- 1975-09-30 JP JP50117341A patent/JPS5210515A/en active Pending
- 1975-10-02 NO NO753340A patent/NO138232C/en unknown
- 1975-10-14 BR BR7506698A patent/BR7506698A/en unknown
-
1976
- 1976-04-22 SE SE7604638A patent/SE418438B/en unknown
- 1976-04-30 FI FI761222A patent/FI761222A/fi not_active Application Discontinuation
- 1976-06-20 EG EG357/76A patent/EG13428A/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ES440798A1 (en) | 1977-06-16 |
| LU73254A1 (en) | 1976-04-13 |
| CH586969A5 (en) | 1977-04-15 |
| ATA646875A (en) | 1977-08-15 |
| AU8474175A (en) | 1977-03-17 |
| AR207371A1 (en) | 1976-09-30 |
| IE42607B1 (en) | 1980-09-10 |
| NO138232C (en) | 1978-07-26 |
| FR2318529B1 (en) | 1981-11-20 |
| AT342712B (en) | 1978-04-25 |
| FR2318529A1 (en) | 1977-02-11 |
| IT1047975B (en) | 1980-10-20 |
| DK364675A (en) | 1977-01-16 |
| SE7604638L (en) | 1977-01-16 |
| EG13428A (en) | 1981-12-31 |
| SE418438B (en) | 1981-05-25 |
| NL7510335A (en) | 1977-01-18 |
| FI761222A (en) | 1977-01-16 |
| ZA755538B (en) | 1976-07-28 |
| JPS5210515A (en) | 1977-01-26 |
| IE42607L (en) | 1977-01-15 |
| NO753340L (en) | 1977-01-18 |
| GB1543581A (en) | 1979-04-04 |
| BR7506698A (en) | 1977-05-17 |
| BE832861A (en) | 1975-12-16 |
| SU637105A3 (en) | 1978-12-05 |
| NO138232B (en) | 1978-04-17 |
| CA1033807A (en) | 1978-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69603825T2 (en) | HIGH VOLTAGE DC TRANSMISSION SYSTEM | |
| DE102007040550A1 (en) | Control scheme for a DC / AC direct converter | |
| EP1715582A1 (en) | Circuit arrangement for driving an electric power switch at high voltage | |
| DE102020214013A1 (en) | POWER CONVERTER, CONTROL PROCEDURE AND CONTROL PROGRAM | |
| DE3618221C1 (en) | Switching power supply with a great clocked DC converter | |
| DE1562033A1 (en) | Fast acting electronic circuit | |
| DE1055590B (en) | Transistor switching arrangement for the optional connection of a load with different potentials | |
| DE3811799A1 (en) | Circuit arrangement for bidirectional control of DC motors or DC chopper converters (controllers) | |
| DE3813672A1 (en) | Invertor for an inductive load | |
| DE2653871C2 (en) | Arrangement for generating alternating voltage with an asynchronous generator | |
| DE2050787C3 (en) | Bridge inverter with direct current commutation | |
| DE2221717A1 (en) | Subscriber circuit | |
| DE2536626A1 (en) | THREE-PHASE INVERTER | |
| AT390532B (en) | Pulse width-modulated alternating current power controller | |
| EP2409394B1 (en) | Method for operating an inverter circuit and device for performing the method | |
| DE2612113A1 (en) | TRANSISTOR AND DRIVE CONTROL AND METHOD FOR CONTROLLING A TRANSISTOR | |
| DE3806983C2 (en) | Circuit arrangement for generating voltages of different polarities | |
| DE3804807C1 (en) | Electronic voltage transformer | |
| DE3852943T2 (en) | Microwave tube modulator. | |
| AT402133B (en) | Control device for supplying power to a load circuit of a DC load, and a method for operating such a control device | |
| EP0314982A2 (en) | Inverter for high voltages and high frequencies | |
| DE1201402B (en) | Switching device with a feedback transistor and a diode | |
| DE1901859A1 (en) | DC power supply | |
| DE2553213C2 (en) | Electronic switch | |
| DE2754019C2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8131 | Rejection |