EP0363602B1 - Verfahren zum Unterdrücken von Störsignalen bei einem über ein Stellglied gleichspannungsversorgten Verbraucher sowie Anordnung und Anwendung - Google Patents

Verfahren zum Unterdrücken von Störsignalen bei einem über ein Stellglied gleichspannungsversorgten Verbraucher sowie Anordnung und Anwendung Download PDF

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Publication number
EP0363602B1
EP0363602B1 EP89114886A EP89114886A EP0363602B1 EP 0363602 B1 EP0363602 B1 EP 0363602B1 EP 89114886 A EP89114886 A EP 89114886A EP 89114886 A EP89114886 A EP 89114886A EP 0363602 B1 EP0363602 B1 EP 0363602B1
Authority
EP
European Patent Office
Prior art keywords
voltage
regulating element
load
differential amplifier
way
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
Application number
EP89114886A
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German (de)
English (en)
French (fr)
Other versions
EP0363602A1 (de
Inventor
Siegfried Dipl.-Ing. Heider
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
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Filing date
Publication date
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Publication of EP0363602A1 publication Critical patent/EP0363602A1/de
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor

Definitions

  • the invention is based on a method according to the preamble of patent claim 1.
  • actuators e.g. B. the actuators of series regulators, supplied with DC voltage (DE-OS 28 22 897, Funk-Technik 37 (1982), number 9, pages 385 to 388). Voltage fluctuations in the supply source, load fluctuations in the consumer and interference signals, e.g. B. network hum, can be corrected with this.
  • a regulator is known from US Pat. No. 4,341,990 which contains means for making leakage currents which flow via parasitic capacitances in the actuator ineffective for the regulation.
  • a current is coupled out in front of the actuator via a capacitor, the capacitance of which corresponds to the size according to the parasitic capacitances, and is led to the control input of the actuator bypassing the usual control loop.
  • This principle is also known as predistortion. This measure allows the high-frequency behavior of a controller to be improved, in particular if high-frequency interference is superimposed on the signal to be controlled.
  • the object of the invention is to provide, starting from the preamble of claim 1, a method which suppresses at least the remaining interference signals with little effort.
  • an arrangement for performing this method and an application are to be shown. This object is achieved with regard to the method by the characterizing steps of claim 1, with regard to the arrangement by the features of claim 2 and with regard to the application by the features of claim 5.
  • Claims 3 and 4 show configurations of the arrangement.
  • the invention is based on the finding that interference signals or interference signal components, in particular "AC ripples" that flow past the actuator or the series regulator, for example via parasitic capacitances of a high-voltage transformer, to ground cannot be corrected using conventional actuators / regulators.
  • the consumer voltage for example the helix voltage of a traveling wave tube, is therefore still subjected to this type of interference signals. With the measures of the invention, these interference signals are effectively suppressed.
  • the controller is followed by a controlled choke (electronic, see above), it is difficult to suppress low-frequency interference.
  • a large inductance must be provided to suppress relatively low-frequency interference, which due to its own weight cannot be used in satellite applications.
  • such inductive components are not required for interference signal suppression.
  • the voltage drop across the DC resistance of the choke cannot be corrected at all, and thus the interference signal suppression cannot be as high as in the method according to the invention.
  • Another advantage of the method according to the invention is the fact that the gain of the actuator is included in the ripple suppression.
  • a capacitor provided as part of an output filter can be used as a capacitive sensor for detecting the interference signal, so that no further capacitive components are required.
  • the DC voltage U for the DC voltage supply of the consumer RL is one Interference voltage - AC ripple UR - superimposed.
  • a separate voltage source QR is shown in FIG. 1 for this AC ripple UR.
  • the DC voltage supply to the consumer RL takes place via the actuator - transistor V1 - and the resistor R1 connected in series with the collector-emitter path.
  • the operational amplifier N1 With the voltage divider lying parallel to the consumer RL, consisting of the resistors R2 and R3, a voltage proportional to the voltage UV falling across the consumer RL is detected and fed to the operational amplifier N1.
  • the operational amplifier N1 which operates as a differential amplifier, compares the voltage detected by the voltage divider R2, R3 with a reference voltage Uref.
  • the output signal of the operational amplifier N1 is used to control the transistor V1.
  • the transistor V1, the resistors R1, R2 and R3 and the operational amplifier N1 work as a conventional series regulator.
  • the operational amplifier N1 has an upper cut-off frequency of approximately 3 kHz.
  • An assumed AC ripple of 5 V is suppressed to 100 - 500 mV with the series regulator. If, however, part of the AC ripple can flow to ground via the parasitic capacitance Cp, arranged in FIG.
  • the differential voltage at the input of the operational amplifier N2 is inverted and added to the connection point P between the actuator V1 and the ohmic resistor R1, which represents the load resistor for the operational amplifier N2, in antiphase with respect to the alternating component appearing at the output of the actuator V1.
  • a capacitor provided as part of the high-voltage smoothing filter can advantageously be used as the capacitive sensor, so that no additional capacitor is required.
  • a voltage proportional to the AC ripple appears at the output of the operational amplifier N2.
  • the DC voltage generated by the load current via the resistor R1 is kept away from the output of the operational amplifier N2 by the capacitor C3.
  • the gain of the actuator is included in the AC interference signal suppression, as a result of which the suppression factor becomes very high.
  • Figure 2 shows the application of the invention in a traveling wave tube power supply as a helix voltage regulator.
  • a high voltage is generated by means of the high-voltage transformer Tr, for example from a switching regulator connected upstream of the high-voltage transformer Tr. From this, the supply voltages for cathode UKA, the collector (s) UKO and Helix UHE are obtained via several secondary taps after rectification.
  • the helix voltage is detected by the voltage divider R2, R3 and regulated via the operational amplifier N1 and the actuator - transistor V1 - to a predetermined setpoint.
  • the AC voltage ripple flowing to ground via the parasitic transformer capacitances is detected by the capacitive voltage divider C1, C2, inverted by the operational amplifier N2 operated with almost open amplification and by Feeding of the inverted signal at resistor R1 is regulated by the actuator - V1. It is also possible to detect only a part of the AC voltage ripple, for example on only one secondary winding of the high-voltage transformer Tr, and to forward it to the operational amplifier N2.
  • the circuitry provided between the inputs of the operational amplifier N2 by means of a resistor and a zener diode serves to protect this operational amplifier.
  • the invention is particularly suitable for ripple suppression in the helix power supply of traveling wave tube amplifiers on board satellites.
  • interference signals of low frequency from approximately 100 Hz can be suppressed without inductive components being necessary. Since no inductive components are used in the interference signal evaluation, no phase changes occur.
  • the invention is therefore also suitable for systems in which rapid current-side current changes occur, e.g. TDMA satellite systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
EP89114886A 1988-10-13 1989-08-11 Verfahren zum Unterdrücken von Störsignalen bei einem über ein Stellglied gleichspannungsversorgten Verbraucher sowie Anordnung und Anwendung Expired - Lifetime EP0363602B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834880 1988-10-13
DE3834880A DE3834880A1 (de) 1988-10-13 1988-10-13 Verfahren zum unterdruecken von stoersignalen bei einem ueber ein stellglied gleichspannungsversorgten verbraucher sowie anordnung und anwendung

Publications (2)

Publication Number Publication Date
EP0363602A1 EP0363602A1 (de) 1990-04-18
EP0363602B1 true EP0363602B1 (de) 1993-10-20

Family

ID=6365037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114886A Expired - Lifetime EP0363602B1 (de) 1988-10-13 1989-08-11 Verfahren zum Unterdrücken von Störsignalen bei einem über ein Stellglied gleichspannungsversorgten Verbraucher sowie Anordnung und Anwendung

Country Status (3)

Country Link
US (1) US4968928A (enrdf_load_stackoverflow)
EP (1) EP0363602B1 (enrdf_load_stackoverflow)
DE (2) DE3834880A1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129345A1 (de) * 1991-09-04 1993-03-18 Ant Nachrichtentech Laengsregler zur speisung eines gleichspannungsversorgten verbrauchers sowie anwendung
DE4139557A1 (de) * 1991-11-30 1993-06-03 Ant Nachrichtentech Verfahren zur optimierung der ausgangsleistung von parallel geschalteten verstaerkern sowie anordnung
DE4314056C2 (de) * 1993-04-29 1998-05-28 Bayerische Motoren Werke Ag Schaltanordnung zum Herstellen einer oberwellenfreien Spannung aus der Bordnetzspannung von Kraftfahrzeugen
SE502562C2 (sv) * 1994-03-03 1995-11-13 Ericsson Telefon Ab L M Förfarande och anordning för styrning av vandringsvågrör
EP0685935A1 (en) * 1994-06-03 1995-12-06 Alcatel Bell-Sdt Filter arrangement
US5705922A (en) * 1995-03-30 1998-01-06 The Whitaker Corporation Terminator with voltage regulator
DE19521663A1 (de) * 1995-06-14 1996-12-19 Philips Patentverwaltung Integrierter Schaltkreis mit Spannungsregelschaltung
US5924890A (en) * 1996-08-30 1999-07-20 The Whitaker Corporation Electrical connector having a virtual indicator
US7306397B2 (en) * 2002-07-22 2007-12-11 Exodyne Technologies, Inc. Energy attenuating safety system
DE10322863A1 (de) * 2003-05-21 2004-12-16 Leopold Kostal Gmbh & Co Kg Schaltungsanordnung
US20050140346A1 (en) * 2003-12-29 2005-06-30 Eliahu Ashkenazy Method and apparatus for reducing low-frequency current ripple on a direct current supply line

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584057A (enrdf_load_stackoverflow) * 1968-07-29 1969-12-12
JPS5244420B2 (enrdf_load_stackoverflow) * 1973-06-11 1977-11-08
US3916294A (en) * 1974-03-21 1975-10-28 Magnavox Co Cable television substation regulated power supply with ripple suppression
DE2822897A1 (de) * 1978-05-26 1979-11-29 Merk Gmbh Telefonbau Fried Schaltungsanordnung zur strombegrenzung in netzgeraeten mit strom- und spannungsregelung
US4327319A (en) * 1980-08-15 1982-04-27 Motorola, Inc. Active power supply ripple filter
US4341990A (en) * 1981-04-27 1982-07-27 Motorola, Inc. High frequency line ripple cancellation circuit
US4427935A (en) * 1981-10-13 1984-01-24 Mobil Oil Corporation Constant current source
US4644254A (en) * 1984-08-28 1987-02-17 Siemens Aktiengesellschaft Switch controller having a regulating path and an auxiliary regulating path parallel thereto

Also Published As

Publication number Publication date
DE58905964D1 (de) 1993-11-25
US4968928A (en) 1990-11-06
DE3834880C2 (enrdf_load_stackoverflow) 1991-01-10
DE3834880A1 (de) 1990-04-19
EP0363602A1 (de) 1990-04-18

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