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    • 3. 发明专利
    • Method of Regulation for Alternate Current Electrical Machines.
    • GB190307293A
    • 1904-03-28
    • GB190307293D
    • 1903-03-28
    • WINTER GABRIELEICHBERG FRIEDRICH
    • WINTER GABRIELEICHBERG FRIEDRICH
    • 7293. Winter, G., and Eichberg, F. March 28. Dynamos, regulating; motors, controlling.-Relates to a system of regulation particularly for arrangements described in Specification No. 23,288, A.D. 1902, but also applicable generally to alternators having their exciting - windings in a separate circuit, in which the speed of the rotor varies in the same sense as the voltage in the exciting-circuit, instead of, as usual, in the opposite sense. This result is obtained by drawing the exciting-current from one or more series transformers in circuits carrying the main current, and varying the ratio of the secondary of this transformer &c. to the primary to vary the voltage of the exciting-current and also the impedance of the circuit. In one arrangement, shown in Fig. 1, applied to a single-phase motor, the exciting-current in the field winding 2 is derived from the variable secondary of the transformer 3 in series across the supply mains with the winding 1 in which the active counter electromotive force is produced. The motor is stopped when the winding 2 is short-circuited, and is run up in speed as the terminal 6 is moved over the transformer terminals 7, 8, 9, 10. A reverser 4 is connected to the terminals 5, 6. In a second case, the transformer secondary is not variable, the variable current through the winding 2 being produced by varying the resistance in its circuit or by shunting the winding 2 by resistances. These arrangements are applicable when the motor is to be braked by short-circuiting the winding 1, or when the motor is run with the winding 1 shortcircuited and a low-pressure winding 11 connected to corresponding low-pressure mains. When several motors are to be controlled, the exciting- windings may be connected in series or parallel. The exciting-voltage may also be derived partly from a winding in parallel to the winding 1 and on either side of the transformer 3, or wholly or partially from the variable secondary of a transformer 13, Figs. 6 and 9, in the circuit of the lowpressure winding 11. In the case shown in Fig. 6, the independent field winding 2, Fig. 9, is dispensed with, and in the other case the winding 11 is shown deriving its voltage from a transformer 14 connected across the mains. The windings 1, 11 may be connected in series, the independent field winding 2 and transformer 3 being as shown in Fig. 1, or the field being produced by the combination of the rotor windings 1, 11 as shown in Fig. 11. An induction regulator or an auto-transformer may be employed instead of the transformer 3 in the first of these two cases, a reversing-switch being un necessary when the regulator is employed. Fig. 14 illustrates the regulation by means of resistances W.
    • 4. 发明专利
    • Improvements in and relating to Alternating Current Dynamo-electric Apparatus.
    • GB190223288A
    • 1903-10-24
    • GB190223288D
    • 1902-10-24
    • WINTER GABRIELEICHBERG FRIEDRICH
    • WINTER GABRIELEICHBERG FRIEDRICH
    • H02K27/04H02K27/08
    • 23,288. Winter, G., and Eichberg, F. Oct. 24. Dynamos; motors; dynamos, regulating; motors, controlling.-Relates to alternating-current generators, motors, &c. formed of a stator having a bi-phase or polyphase winding and a rotor having a normal continuous-current commutator winding and brushes located in one axis ; or the rotor may have a polyphase or multi-axial construction and the stator a single-phase or mono-axial construction, in which case the exciting-currents are supplied through the commutator. In the former case, the rotor and the stator phase-windings S, P, which have the same or approximately the same field axis x-x, are subjected to any desired potentials E', E of equal periodicity, either direct or through series resistances, while the magnetic field component which effects the torque is produced by the second or other stator phase-winding M, producing a magnetic field with its axis y-y at right-angles to the axis x-x, by means of alternating currents of equal periodicity introduced externally. This winding may be placed on the rotor instead of on the stator. It is thereby possible to alter the difference of potentials applied to the windings having the same axis, or to alter the magnetic field. With motors, the speed may thus be varied with any load, and with generators any desired voltage of the same phase of periodicity as the magnetic field may be obtained with any speed independently of the load. The stator phase-winding having the same or practically the same axis as the rotor is connected in series with the rotor by altering the position of the brushes, so that the currents passing through this series produce ampere windings of approximately equal strength but opposite in direction. The desired effect is produced in this case either by varying the applied potential or independently thereof by altering the magnetic field. The number of stator and rotor windings may be equal, the windings corresponding to like phases being connected in series, so that the currents produce ampÞre windings of approximately equal strength but opposite in direction, and by means of a separate polyphase winding on the stator or the rotor a magnetic field is produced which at, any moment is at right-angles, or approximately so, to the axis of the opposed ampere windings. , One of the two windings having the same axis may be short - circuited through any desired resistances. The magnetic field may be excited by a winding or windings connected in series with the armature. In a modification, the winding M is abolished, the external current being supplied to the windings P or S on the axis y-y.