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Patent Analysis of

ELECTRIC GENERATOR SYSTEM ESPECIALLY FOR AEROSPACE VEHICLES

Updated Time 15 March 2019

Patent Registration Data

Publication Number

GB1224031A

Application Number

GB1968018005

Application Date

16 April 1968

Publication Date

03 March 1971

Current Assignee

MESSERSCHMITT - BOLKOW - BLOHM GMBH

Original Assignee (Applicant)

MESSERSCHMITT - BOLKOW - BLOHM GMBH

International Classification

H02K19/36,B64G1/42,H02K19/16

Cooperative Classification

H02K19/365,B64G1/421,B64G1/428,H02K19/36

Inventor

WALTER, E., MEHNERT,HORST, ANTON, HELLER

Abstract

1,224,031. A.C. generators with D.C. excitations. MESSERSCHMITT-BOLKOW-BLOHM G.m.b.H. 16 April, 1968 [27 April, 1967], No. 18005/68. Heading H2A. In an electric generator system especially for aerospace vehicles and consisting of a voltage control section 31, a main generator is excited by an exciter generator 10, and a controlled rectifier 30, e.g. of thyristors in the generator rotor 13, an RF-signal transmission consisting- of a transmitter 41 and a receiver 32 controls the excitation voltage by connection of the receiver to the control section 31 from which the signals are delivered to the rectifier 30. A regulator 40 modulates the RF voltage amplitude, and the signal is demodulated in a detector 33 and fed to section 31 via a push-pull amplifier 34. 21 designates the main generator field winding, and the exciter generator is excited by permanent magnets 11, 12.

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Claims

**WARNING** start of CLMS field may overlap end of DESC **.

(54) ELECTRIC GENERATOR SYSTEM ESPECIALLY FOR

AEROSPACE VEHICLES

(711) We, MESSERSCHMITT - BOLKOW BLOOM GMBH, a Company organised under the laws of the German Federal Republic, of 8 München 86, Arabellastrasse 1, Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:

The invention relates to an electric generator system, specially for aerospace vehicles.

In accordance with the present invention, there is provided an electric generator system specially for aerospace vehicles, which consists of a voltage control section, a main generator excited by an exciter generator, and a controlled rectifier in the generator rotor, wherein the excitation voltage is controlled by signals received by way of iRF-signal transmission consisting of a transmitter and a receiver, the receiver being connected to the control section and the signals being delivered from the control section to the rectifier.

In one embodiment of the invention it is proposed that thyristors be used as the controlled rectifier. This arrangement is of special advantage for rotating equipment, since thyristors are insensitive to vibration, changes in attitude, high operating temperatures and high accelerative forces, to which they are exposed in aerospace vehicles. Another great advantage is the controllability of the firing point, which is easily attainable and a requirement with high density-type rotating equipment, and which provides at the same time an ideal means of voltage control.

Very advantageously a push-pull amplifier is controlled by RfF-signal transmission.

In order that the invention may be clearly understood and readily carried into effect, generator systems in accordance therewith will now be described, by way of example with reference to the accompanying drawings, in which:

Figure !1 is a functional diagram of a generator system,

Figure 2 shows a modification of an RFsignal transmission system depicted in Figure 11.

The following description applies to both

Figures.

The generator system includes a brushless, self-excited three-phase excites generator 10, excitation being by permanent magnets ilil, '112.

lhis three-phase exufrer generator 10 provirtes the field excitation for the main generator 20.

The generator system is provided with a rotor 013. The excitation energy is supplied to the field winding 21 of the main generator 20 by way of a controlled rectifier 30, consisting of thyristors in the rotor 11'3. The control voltage for the firing point of the thyristors is supplied by a control section 311 which is not subject to outside influences. The section 3;1 controls the exciting voltage and thus the terminal voltage of the main generator 20, and is fed from the three-phase exciter generator 110 in proper phase relation. The exciting voltage is used for voltage regulation by varying its value by means of a d.c. control voltage from a regulator 40 which modulates the amplitude of a RF voltage in a transmitter 411, and sends it to a receiver 32 via transmitting and receiving antennae 42, 43. This signal is demodulated in a detector 33 and fed to the section 31 by way of a push-pull amplifier 34.

WHAT WE .CLAM IS : -

1. An electric generator system specially for aerospace vehicles, which consists of a voltage control section, a main generator excited by an exciter generator, and a controlled rectifier in the generator rotor, wherein the excitation voltage is controlled by signals received by way of RF-signal transmission consisting of a transmitter and a receiver, the receiver being connected to the control section and the signals being delivered from the control section to the rectifier.

2. IAn electric generator system according to

Claim 11, in which thyristors are used as the controlled rectifier.

3. An electric generator system according to

Claims 1 and 12, in which a push-pull amplifier is controlled by the RF-signal transmission.

4. An electric generator system substantially as described with reference to Figure 1 of the accompanying drawings

5. An electric generator system substantially as described with reference to Figure 2 of the accompanying drawings.

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Claim Tree

  • 1
    1. An electric generator system specially for aerospace vehicles, which consists of a voltage control section, a main generator excited by an exciter generator, and a controlled rectifier in the generator rotor, wherein
    • the excitation voltage is controlled by signals received by way of RF-signal transmission consisting of
    • 3. An electric generator system according to Claims 1 and 12, in which
      • a push-pull amplifier is controlled by the RF-signal transmission.
  • 4
    4. An electric generator system substantially as described with reference to Figure 1 of the accompanying drawings
  • 5
    5. An electric generator system substantially as described with reference to Figure 2 of the accompanying drawings.
See all 3 independent claims

Description

(54) ELECTRIC GENERATOR SYSTEM ESPECIALLY FOR

AEROSPACE VEHICLES

(711) We, MESSERSCHMITT - BOLKOW BLOOM GMBH, a Company organised under the laws of the German Federal Republic, of 8 München 86, Arabellastrasse 1, Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:

The invention relates to an electric generator system, specially for aerospace vehicles.

In accordance with the present invention, there is provided an electric generator system specially for aerospace vehicles, which consists of a voltage control section, a main generator excited by an exciter generator, and a controlled rectifier in the generator rotor, wherein the excitation voltage is controlled by signals received by way of iRF-signal transmission consisting of a transmitter and a receiver, the receiver being connected to the control section and the signals being delivered from the control section to the rectifier.

In one embodiment of the invention it is proposed that thyristors be used as the controlled rectifier. This arrangement is of special advantage for rotating equipment, since thyristors are insensitive to vibration, changes in attitude, high operating temperatures and high accelerative forces, to which they are exposed in aerospace vehicles. Another great advantage is the controllability of the firing point, which is easily attainable and a requirement with high density-type rotating equipment, and which provides at the same time an ideal means of voltage control.

Very advantageously a push-pull amplifier is controlled by RfF-signal transmission.

In order that the invention may be clearly understood and readily carried into effect, generator systems in accordance therewith will now be described, by way of example with reference to the accompanying drawings, in which:

Figure !1 is a functional diagram of a generator system,

Figure 2 shows a modification of an RFsignal transmission system depicted in Figure 11.

The following description applies to both

Figures.

The generator system includes a brushless, self-excited three-phase excites generator 10, excitation being by permanent magnets ilil, '112.

lhis three-phase exufrer generator 10 provirtes the field excitation for the main generator 20.

The generator system is provided with a rotor 013. The excitation energy is supplied to the field winding 21 of the main generator 20 by way of a controlled rectifier 30, consisting of thyristors in the rotor 11'3. The control voltage for the firing point of the thyristors is supplied by a control section 311 which is not subject to outside influences. The section 3;1 controls the exciting voltage and thus the terminal voltage of the main generator 20, and is fed from the three-phase exciter generator 110 in proper phase relation. The exciting voltage is used for voltage regulation by varying its value by means of a d.c. control voltage from a regulator 40 which modulates the amplitude of a RF voltage in a transmitter 411, and sends it to a receiver 32 via transmitting and receiving antennae 42, 43. This signal is demodulated in a detector 33 and fed to the section 31 by way of a push-pull amplifier 34.

WHAT WE .CLAM IS : -

1. An electric generator system specially for aerospace vehicles, which consists of a voltage control section, a main generator excited by an exciter generator, and a controlled rectifier in the generator rotor, wherein the excitation voltage is controlled by signals received by way of RF-signal transmission consisting of a transmitter and a receiver, the receiver being connected to the control section and the signals being delivered from the control section to the rectifier.

**WARNING** end of DESC field may overlap start of CLMS **.

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