[go: up one dir, main page]

DE347200C - Static frequency converter that is fed by a high-frequency machine driven by a motor - Google Patents

Static frequency converter that is fed by a high-frequency machine driven by a motor

Info

Publication number
DE347200C
DE347200C DENDAT347200D DE347200DD DE347200C DE 347200 C DE347200 C DE 347200C DE NDAT347200 D DENDAT347200 D DE NDAT347200D DE 347200D D DE347200D D DE 347200DD DE 347200 C DE347200 C DE 347200C
Authority
DE
Germany
Prior art keywords
frequency
motor
frequency converter
fed
machine driven
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
Application number
DENDAT347200D
Other languages
German (de)
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.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Publication date
Application granted granted Critical
Publication of DE347200C publication Critical patent/DE347200C/en
Expired legal-status Critical Current

Links

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
    • H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
    • H01F38/04—Adaptations of transformers or inductances for specific applications or functions for non-linear operation for frequency changing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Control Of Ac Motors In General (AREA)

Description

Ruhender Frequenzumformer, der durch eine von einem Motor angetriebene Hochfrequenzmaschine gespeist wird. Im Hauptpatent 32=732 ist ein ruhender Frequenzumformer dargestellt und beschrieben, bei welchem der Strom des zum Antrieb der Hochfrequenzmaschine dienenden Motors ganz oder teilweise zur Erzeugung der Ililfsmagnetisierung verwendet wird. Bei derartigen Frequenzumformern hat sich im Verlauf der weiteien Untersuchungen der Nachteil herausgestellt, daß gleichzeitig_mit der Änderung der Belastung bzw. des Motorstromes auch die Gleichstromerregung des Frequenzumformers sich ändert. Wenn also die Abstimmung in den Hochfrequenzkreisen für die eine Belastung gestimmt hat, so stimmt sie bei einer anderen Belastung nicht mehr und es muß in allen Hochfrequenzkreisen die Abstimmung von neuem vorgenommen werden.Static frequency converter, which is driven by a motor driven High frequency machine is fed. In the main patent 32 = 732 there is a static frequency converter shown and described at which the current is used to drive the high-frequency machine Serving motor is used in whole or in part to generate auxiliary magnetization will. With such frequency converters in the course of extensive investigations the disadvantage that at the same time as the change in load resp. of the motor current, the DC excitation of the frequency converter also changes. So if the vote in the high-frequency circuits is correct for the one load has, it is no longer correct with a different load and it must be in all high-frequency circuits the vote must be carried out again.

Um diesen Nachteil zu beseitigen, wird nach der vorliegenden Erfindung die Abstimmung der Hochfrequenzkreise derart vorgenommen, daß sie angenähert für die in der Praxis vorkommende kleinste Belastung des Motors stimmt, während parallel zum Erregerstromkreis des Frequenzumformers ein passender, gegebenenfalls einstellbarer Nebenschluß Widerstand und in Reihe mit diesem Erregerstromkreis ein Widerstand mit hohem Temperaturkoeffizienten, z. B. ein Eisenwiderstand, eingeschaltet wird. Durch diesen letzteren wird der Strom im Erregerstromkreis auch bei sich ändernder Belastung konstant oder nahezu konstant gehalten, so daß eine Änderung der Abstimmung vermieden ist.In order to overcome this disadvantage, according to the present invention the tuning of the high-frequency circuits made so that they approximated for the smallest load on the motor that occurs in practice is correct, while parallel for the excitation circuit of the frequency converter a suitable, if necessary adjustable Shunt resistor and a resistor in series with this excitation circuit with high temperature coefficient, e.g. B. an iron resistor is switched on. Due to the latter, the current in the excitation circuit is also changing Load held constant or almost constant, so that a change in the vote is avoided.

In der beiliegenden Zeichnung ist ein ruhender Frequenzumformer nach der vorliegenden Erfindung in einer beispielsweisen Ausführungsform schematisch dargestellt. Wie bei dem Hauptpatent bedeutet IV die Hochfrequenzmaschine, G den Antriebsmotor, Il den Frequenzumformer, S, und S2 dessen Sekundär-bzw. Gleichstromwicklungen, C eine Kapazität, D eine Vorschaltdrossel, N ein Gleichstromnetz. E bedeutet den nach der vorliegenden Erfindung eingeschalteten Widerstand mit hohem Temperaturkoeffizienten und W den einstellbaren gewöhnlichen Nebenschlußwiderstand.In the accompanying drawing, a static frequency converter according to the present invention is shown schematically in an exemplary embodiment. As in the main patent, IV means the high-frequency machine, G the drive motor, Il the frequency converter, S, and S2 its secondary or. Direct current windings, C a capacitance, D a series reactor, N a direct current network. E stands for the high temperature coefficient resistor switched on according to the present invention and W stands for the adjustable ordinary shunt resistor.

Claims (1)

PATENTANSPRUCH: Ruhender Frequenzumformer, der durch eine von einem Motor angetriebene Hochfrequenzmaschine gespeist wird, nach Patent 32I732, dadurch gekennzeichnet, daß in Reihe mit der Erregerwicklung (s1) des Frequenzumformers ein Widerstand mit hohem Temperaturkoeffizienten (E) und parallel zu dieser Erregerwicklung ein gegebenenfalls einstellbarer gewöhnlicher Widerstand (W) c ingc: chaltet ist. PATENT CLAIM: Static frequency converter which is fed by a high-frequency machine driven by a motor, according to patent 32I732, characterized in that in series with the excitation winding (s1) of the frequency converter there is a resistor with a high temperature coefficient (E) and parallel to this excitation winding an optionally adjustable resistor ordinary resistance (W) c ingc: is switched.
DENDAT347200D Static frequency converter that is fed by a high-frequency machine driven by a motor Expired DE347200C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE347200T

Publications (1)

Publication Number Publication Date
DE347200C true DE347200C (en) 1922-01-19

Family

ID=6255968

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT347200D Expired DE347200C (en) Static frequency converter that is fed by a high-frequency machine driven by a motor

Country Status (1)

Country Link
DE (1) DE347200C (en)

Similar Documents

Publication Publication Date Title
DE2950241A1 (en) PHASE CONTROL CIRCUIT
DE624433C (en) Method for generating an alternating voltage with an essentially rectangular shape
DE347200C (en) Static frequency converter that is fed by a high-frequency machine driven by a motor
DE102014001935B4 (en) Method for monitoring an apparatus for inductive heating
DE756091C (en) Device for obtaining an alternating voltage that is to be kept constant in terms of voltage and frequency with great accuracy
DE760334C (en) Modulator with rectifiers in a balanced bridge circuit
DE2747964A1 (en) CONTROL PROCEDURE FOR A THREE-PHASE SELF-COMMUNICATED INVERTER
DE2106146A1 (en) Three phase inverter
DE2150117C3 (en) Arrangement for regulating the speed of a polyphase asynchronous slip ring motor connected to an alternating current network
DE919179C (en) Three-phase motor
DE549448C (en) Device for maintaining the speed of several AC motors
DE2348415B1 (en) Converter stage
DE1588693C3 (en) Device for frequency control of a converter-fed auxiliary network
DE767702C (en) Device for producing an alternating voltage proportional to the error speed from the variable path error alternating voltage that arises in an electrical transmission device
DE647609C (en) Automatic synchronizing device
DE466769C (en) Method for starting a rotary field converter with a load machine, which is used to couple two networks of different frequencies by connecting the load machine to the lower frequency network
DE584039C (en) Circuit for maintaining the normal operation of a single-phase device to be connected to a multi-phase network
DE599210C (en) Method for controlling several alternating current generators to maintain the readiness for parallel switching with the help of a digital frequency
DE953184C (en) Procedure for operating a converter control
DE881525C (en) Method and device for converting a pulse voltage or current curve into a sharp voltage or current surge
DE605252C (en) Circuit for regulating a DC motor operated in Leonard control
DE390085C (en) Machine for the conversion or the simultaneous generation of alternating currents of different frequencies
DE482452C (en) Device for practicing the procedure for the rapid de-energization of DC-excited machines
DE930039C (en) Envelope converter
DE870448C (en) Procedure for starting synchronous motors