EP0642144B1 - Dispositif de transmission de signaux électriques de puissance à un ensemble tournant - Google Patents
Dispositif de transmission de signaux électriques de puissance à un ensemble tournant Download PDFInfo
- Publication number
- EP0642144B1 EP0642144B1 EP94401718A EP94401718A EP0642144B1 EP 0642144 B1 EP0642144 B1 EP 0642144B1 EP 94401718 A EP94401718 A EP 94401718A EP 94401718 A EP94401718 A EP 94401718A EP 0642144 B1 EP0642144 B1 EP 0642144B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical signals
- signals according
- transmitting electrical
- memory
- digital
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
Definitions
- the subject of the present invention is a signal device power electrics with variable frequency and phases, from a fixed assembly to a rotating assembly.
- this device is no longer suitable if one wishes obtain an electrical signal on the rotating part, the shape, frequency and phase must be variable in to a large extent. Indeed, for optimal performance, it is necessary to make the whole installation work at the resonance.
- the voltage-current phase shift is achieved, from well known way, in the primary circuit by means of a capacitor.
- the installation of a second capacitor in the secondary circuit is hardly possible for technological reasons related to its volume and the speed of rotation of the rotating assembly. It follows that it is impossible to obtain constant power across the secondary if the supply frequency varies between 0 and 10000 Hz. In addition, it is not possible to transmit different signals without multiplying the number of transformers.
- the primary winding is powered by a source at fixed frequency and the rotating assembly further includes a so-called switching power supply which receives the power of the secondary winding, a digital memory, consisting of a digital matrix, which delivers, under the impulse of a clock, a stored digital signal comprising the desired characteristics, a digital converter analog receiving said stored digital signal and finally an amplifier giving the analog signal obtained the desired power.
- a switching power supply which receives the power of the secondary winding
- a digital memory consisting of a digital matrix, which delivers, under the impulse of a clock, a stored digital signal comprising the desired characteristics, a digital converter analog receiving said stored digital signal and finally an amplifier giving the analog signal obtained the desired power.
- the matrix of the digital memory with n columns of m elements which define the resolution of the period and of the amplitude of the stored signal.
- Said digital memory can be a read only memory, a erasable memory, programmable memory or, finally, a RAM.
- the device according to the invention further includes a counter which increments the n columns and loop from last to first, a circuit of reset and an initialization register.
- a control system makes it possible to transmit, from outside the device, operating parameters which are introduced in digital form.
- This transmission can be done by means of an electro-optical chain, preferably incorporated in the rotating transformer, by means of electromagnetic radiation in the radio frequency range or by means of infrared radiation.
- an electro-optical chain preferably incorporated in the rotating transformer
- electromagnetic radiation in the radio frequency range or by means of infrared radiation.
- the rotating transformer in Figure 1 allows you to transmit electrical power from a fixed assembly 1 to a rotating assembly 2.
- This transformer has a first part 3 of the frame supported by the fixed assembly 1 and inside which is a winding primary 4, and a second part 5 of the supported frame by the rotating assembly 2 and inside which finds a primary winding 6.
- the parts 3 and 5 of the armature are coaxial and separated by a air gap 7 as small as possible.
- This kind of known transformer allows to conveniently transmit a industrial frequency electrical power and this regardless of the speed of rotation of the part rotating.
- a rotating transformer like the one just described is used for the realization of a device according to the invention such as that shown in the figure 2.
- Secondary winding 6 transmits power fixed frequency electric in sinusoidal form at one supply 8 known as switching, of known type, which supplies in DC voltages the different circuits that make up the device of the invention and which are studied below.
- the shape of the signal that we want to obtain on the part rotating is stored in a digital memory 9.
- This last consists of a matrix of n columns each comprising m elements.
- the m elements of each column correspond to the value of the analog signal expressed in binary.
- the word binary gives the resolution of the amplitude of the signal.
- the n columns correspond to the resolution of the period.
- This digital memory can be a read only memory (usually called ROM), an erasable memory (usually called EPROM), a programmable memory (usually called PAL) or RAM (usually called RAM).
- ROM read only memory
- EPROM erasable memory
- PAL programmable memory
- RAM usually called RAM
- Signal shaping is done by a converter digital-analog 10. This turns into a voltage the value of the binary word presented at its entry by the memory, image of m elements of one of the n columns.
- a power amplifier 11 amplifies the analog signal from converter 10.
- a clock 12 a veritable “metronome” of the device generates a rectangular signal as soon as it is switched on. She pilot in particular a counter 13 including a more detailed diagram of a example is given in figure 3.
- the main function of counter 13 is to increment the n memory columns 9 and loop back from the last to the first and then present the binary word of each column to the digital-to-analog converter 10.
- the main function of counter 13 is to increment the n memory columns 9 and loop back from the last to the first and then present the binary word of each column to the digital-to-analog converter 10.
- the latter can receive on an input 15 a trigger signal which can stop or restart at any time incrementation.
- An initialization register 16 has the starting number that a column register 17 must take, either at the supply of the circuit is on the order of a circuit 18 of reset which can itself be controlled on an input 19.
- the initialization register 16 can receive on an input 20 a programming signal.
- a number of signals from control can be transmitted to the device. They concern mainly the inputs 15 of the incrementation circuit 14, 20 of the initialization circuit 16 and 19 of the reset circuit to zero 18. They can also relate to amplifier 11 whose amplification coefficient is to be adjusted by voltage, ie the amplitude of the signal obtained.
- the rotary transformer represented by FIG. 4, of the kind of that of FIG. 1, is equipped with means allowing an electro-optical connection between the fixed assembly 1 and the rotating assembly 2. Bores are provided in the fixed armatures 3 and rotating 5 on the axis thereof. In the bore of the fixed part is a light emitting diode 20 which receives the control signals in digital form and transmits them to an optical fiber 21 itself connected to an optoelectric diode not shown which ensures the transfer of information to rotating electronics.
- the electro-optical transmission mode which has just been described is not limiting. One could in fact use several light-emitting diodes and several opto-electric diodes combined in various ways with optical fibers.
- This link mode is not limiting, we could use for example a radio link with antennas made up of fine threads placed opposite one another respectively on the fixed and rotating parts. A infrared radiation bond is also possible.
- the device that we have just described makes it possible to generate, on a rotating part, a periodic power signal any shape with a bandwidth that can be at least 10 kHz. This bandwidth will depend on the digital converter conversion frequency analog, clock frequency, number of memory columns, and ultimately, bandwidth of the amplifier.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
- Ac-Ac Conversion (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
Pour des raisons de commodité et pour faciliter la compréhension, il n'a été question que d'un ensemble fixe et d'un ensemble tournant, mais il va de soi que ce qui est important c'est la vitesse angulaire relative qui existe entre les deux ensembles. En conséquence on doit conclure que cette invention concerne également le cas où les deux ensembles seraient tournants, dans le même sens ou en sens inverses, avec des vitesses angulaires relatives pouvant varier dans une large gamme.
- la figure 1 représente pour mémoire un transformateur tournant de type connu,
- la figure 2 représente schématiquement un dispositif de transmission conforme à l'invention,
- la figure 3 représente schématiquement un compteur utilisé dans un dispositif conforme à l'invention,
- la figure 4 représente un transformateur tournant auxiliaire permettant la transmission d'informations par voie electro-optique,
- la figure 5 représente sommairement une installation comportant plusieurs systèmes identiques aptes à délivrer des signaux différents.
Le mode de transmission électro-optique qui vient d'être décrit n'est pas limitatif. On pourrait en effet utiliser plusieurs diodes électro-luminescentes et plusieurs diodes opto-électriques combinées de diverses manières avec des fibres optiques.
Claims (16)
- Dispositif de transmission de signaux électriques de puissance à fréquences et à phases variables, d'un ensemble fixe à un ensemble tournant, comportant un transformateur tournant dont une première partie fixe de l'armature supporte un bobinage primaire et dont l'autre partie tournante de l'armature, en regard de la première, supporte un bobinage secondaire, caractérisé en ce que,
Le bobinage primaire (4) est alimenté par une source électrique à fréquence fixe et en ce que l'ensemble tournant comporte en outre une alimentation (8) dite à découpage qui reçoit la puissance de l'enroulement secondaire (6), une mémoire numérique (9) constituée d'une matrice numérique comportant n colonnes de m éléments, qui délivre, sous l'impulsion d'une horloge (12), un signal numérique mémorisé comportant les caractéristiques souhaitées et dont les résolutions de la période et de l'amplitude sont respectivement définies par les n colonnes et les m éléments de chacune d'elles, un convertisseur numérique-analogique (10) recevant ledit signal numérique mémorisé et enfin un amplificateur (11) donnant au signal analogique obtenu, la puissance désirée. - Dispositif de transmission de signaux électriques selon la revendication 1 caractérisé en ce que la mémoire numérique (9) est du type mémoire morte.
- Dispositif de transmission de signaux électriques selon la revendication 1 caractérisé en ce que la mémoire numérique (9) est du type mémoire effaçable.
- Dispositif de transmission de signaux électriques selon la revendication 1 caractérisé en ce que la mémoire numérique (9) est du type mémoire programmable.
- Dispositif de transmission de signaux électriques selon la revendication 1 caractérisé en ce que la mémoire numérique (9) est du type mémoire vive.
- Dispositif de transmission de signaux électriques selon la revendication 5 caractérisé en ce que le signal mémorisé dans la mémoire vive est programmé et piloté par un système logique.
- Dispositif de transmission de signaux électriques selon l'une des revendications 1 à 6, caractérisé en ce que l'horloge (10) délivre un signal rectangulaire qui détermine la cadence de consultation de la mémoire (9).
- Dispositif de transmission de signaux électriques selon la revendication 7 caractérisé en ce qu'il comporte un compteur (13) qui incrémente les n colonnes de la mémoire et reboucle de la dernière à la première.
- Dispositif de transmission de signaux électriques selon la revendication 8, caractérisé en ce que le compteur (13) comporte un circuit de remise à zéro (18).
- Dispositif de transmission de signaux électriques selon la revendication 9 caractérisé en ce qu'il comporte un registre d'initialisation (20) qui permet de démarrer sur une colonne déterminée soit à la mise sous tension soit sur un ordre du circuit de remise à zéro (18).
- Dispositif de transmission de signaux électriques selon l'une des revendications 1 à 10 caractérisé en ce qu'un système de pilotage permet de transmettre, de l'extérieur du dispositif, des paramètres de fonctionnement qui sont introduits sous forme numérique.
- Dispositif de transmission de signaux électriques selon la revendication 11 caractérisé en ce que le système de pilotage met en oeuvre, entre l'ensemble fixe (1) et l'ensemble tournant (2), une chaíne électro-optique avec diode électro-luminescente (20), diode opto-électronique et fibre optique (21).
- Dispositif de transmission de signaux électriques selon la revendication 12 caractérisé en ce que la chaíne électro-optique (20-21) est incorporée au transformateur tournant et sur l'axe de rotation de celui-ci.
- Dispositif de transmission de signaux électriques selon la revendication 11, caractérisé en ce que le système de pilotage met en oeuvre, entre l'ensemble fixe (1) et l'ensemble tournant (2), des moyens radio-électriques.
- Dispositif de transmission de signaux électriques selon la revendication 11, caractérisé en ce que le système de pilotage met en oeuvre, entre l'ensemble fixe (1) et l'ensemble tournant (2) des moyens de transmission par rayonnement infra-rouge.
- Dispositif de transmission de signaux électriques selon l'une des revendications 11 à 15 caractérisé en ce que l'ensemble tournant (2) comporte plusieurs systèmes identiques aptes à délivrer des signaux différents dont les variations de paramètres sont gérées par le registre d'initialisation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9309267 | 1993-07-28 | ||
FR9309267A FR2709618B1 (fr) | 1993-07-28 | 1993-07-28 | Dispositif de transmission de signaux électriques de puissance à un ensemble tournant. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0642144A1 EP0642144A1 (fr) | 1995-03-08 |
EP0642144B1 true EP0642144B1 (fr) | 1999-02-10 |
Family
ID=9449699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94401718A Expired - Lifetime EP0642144B1 (fr) | 1993-07-28 | 1994-07-27 | Dispositif de transmission de signaux électriques de puissance à un ensemble tournant |
Country Status (8)
Country | Link |
---|---|
US (1) | US5451856A (fr) |
EP (1) | EP0642144B1 (fr) |
JP (1) | JP2796499B2 (fr) |
DE (1) | DE69416473T2 (fr) |
FR (1) | FR2709618B1 (fr) |
RU (1) | RU2123229C1 (fr) |
UA (1) | UA41900C2 (fr) |
WO (1) | WO1995004363A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2712250B1 (fr) * | 1993-11-10 | 1995-12-29 | Hispano Suiza Sa | Procédé et dispositif de commande de variation du pas des pales d'un rotor. |
EP0907997A1 (fr) * | 1996-06-25 | 1999-04-14 | John Judson | Machine electrique a courant alternatif et procede de transduction d'energie entre deux systemes differents |
FR2801417B1 (fr) * | 1999-11-19 | 2002-02-08 | Thomson Marconi Sonar Sas | Systeme de connexion pour antenne acoustique sous-marine |
US6759759B2 (en) * | 2000-08-29 | 2004-07-06 | Tamagawa Seiki Kabushiki Kaisha | Rotary contactless connector and non-rotary contactless connector |
GB2445774B (en) * | 2007-01-18 | 2011-12-28 | Inductronics Technology Ltd | A two part inductive connector where the parts rotate into a locked engagement |
DE102013010578B4 (de) * | 2013-06-26 | 2022-03-03 | Sew-Eurodrive Gmbh & Co Kg | Drehübertrager zur kontaktlosen Übertragung elektrischer Energie |
GB201419519D0 (en) * | 2014-11-03 | 2014-12-17 | Rolls Royce Plc | Apparatus for transferring electrical energy |
RU178029U1 (ru) * | 2016-12-30 | 2018-03-21 | Алексей Анатольевич Анцифиров | Устройство для бесконтактной передачи информации с вращающихся объектов |
RU2700658C2 (ru) * | 2019-03-11 | 2019-09-18 | Евгений Николаевич Коптяев | Умножитель частоты с вращающимся полем |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2521766A1 (fr) * | 1982-02-12 | 1983-08-19 | Europ Composants Electron | Transformateur tournant |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5733355A (en) * | 1980-08-06 | 1982-02-23 | Toshiba Corp | Digital speed detector |
US4612503A (en) * | 1980-10-21 | 1986-09-16 | Kabushiki Kaisha S G | Rotation speed detection device having a rotation angle detector of inductive type |
JPS5841202A (ja) * | 1981-09-02 | 1983-03-10 | Hitachi Ltd | 回転軸への電力供給装置 |
JPS5990114A (ja) * | 1982-11-15 | 1984-05-24 | Toshiba Mach Co Ltd | レゾルバによる位置決め装置 |
JPS60230725A (ja) * | 1984-04-28 | 1985-11-16 | Tokyo Keiso Kk | 回転体からの信号伝送装置 |
JPH02262704A (ja) * | 1988-11-21 | 1990-10-25 | Seiko Instr Inc | 粘弾性測定用正弦波発生回路 |
US4962331A (en) * | 1989-07-13 | 1990-10-09 | Servo-Tek Products Company, Inc. | Rotatable control signal generator |
DE4029446C2 (de) * | 1990-09-17 | 1998-03-12 | Lucas Nuelle Lehr Und Mesgerae | Stromrichtergerät für Elektromotoren mit Stromrichterventilen und mit einem Steuersatz |
-
1993
- 1993-07-28 FR FR9309267A patent/FR2709618B1/fr not_active Expired - Fee Related
-
1994
- 1994-07-27 EP EP94401718A patent/EP0642144B1/fr not_active Expired - Lifetime
- 1994-07-27 DE DE69416473T patent/DE69416473T2/de not_active Expired - Fee Related
- 1994-07-27 WO PCT/FR1994/000937 patent/WO1995004363A1/fr unknown
- 1994-07-27 RU RU95108215/09A patent/RU2123229C1/ru not_active IP Right Cessation
- 1994-07-27 UA UA95038270A patent/UA41900C2/uk unknown
- 1994-07-28 US US08/281,570 patent/US5451856A/en not_active Expired - Fee Related
- 1994-07-28 JP JP17715094A patent/JP2796499B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2521766A1 (fr) * | 1982-02-12 | 1983-08-19 | Europ Composants Electron | Transformateur tournant |
Also Published As
Publication number | Publication date |
---|---|
JPH07170737A (ja) | 1995-07-04 |
RU95108215A (ru) | 1997-05-20 |
WO1995004363A1 (fr) | 1995-02-09 |
DE69416473D1 (de) | 1999-03-25 |
UA41900C2 (uk) | 2001-10-15 |
FR2709618B1 (fr) | 1995-09-29 |
JP2796499B2 (ja) | 1998-09-10 |
DE69416473T2 (de) | 1999-08-19 |
RU2123229C1 (ru) | 1998-12-10 |
FR2709618A1 (fr) | 1995-03-10 |
US5451856A (en) | 1995-09-19 |
EP0642144A1 (fr) | 1995-03-08 |
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