US2927261A - Generator regulating apparatus with diode - Google Patents

Generator regulating apparatus with diode Download PDF

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Publication number
US2927261A
US2927261A US710548A US71054858A US2927261A US 2927261 A US2927261 A US 2927261A US 710548 A US710548 A US 710548A US 71054858 A US71054858 A US 71054858A US 2927261 A US2927261 A US 2927261A
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United States
Prior art keywords
generator
voltage
current
switch
coil
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Expired - Lifetime
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US710548A
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English (en)
Inventor
Mittag Hermann
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/16—Regulation of the charging current or voltage by variation of field
    • H02J7/22—Regulation of the charging current or voltage by variation of field due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/16—Regulation of the charging current or voltage by variation of field

Definitions

  • the present invention relates to apparatus for antomatically regulating the voltage output of shunt generators, particularly for automotive vehicles.
  • Regulating'devices of this type comprise a normally closed elec-v tromagnetic switch provided with a voltage coil and with a switching arm actuated in dependence of the voltage output, and also comprise a second normally open electromagnetic switch provided with at least one pair of contacts and with a current coil through which the generated current flows.
  • an apparatus for antomatically regulating shunt generators comprises, according to this invention, an electro-magnetically operated first regulator switch in circuit with the shunt exciting winding of the generator and movable between a first position in which the exciting current is permitted to increase, and a second position in which the exciting current is caused to decrease, including voltage-responding electro-magnetic means depending upon increasing voltage output of the generator for moving said first regulator switch into its second position; a second electro-magnetically operated switch in series between the generator and the load, and including a solenoid for operating this second switch be tween open and closed positions depending upon the output current flowing through this solenoid and this second switch; a variable conductor means connected in parallel with the solenoid coil of the second switch and having a substantially linear characteristic with a pronounced break at a point representing a critical voltagecurrent ratio, this conductor means being substantially non-conductive unless a potential difference larger than said critical voltage is applied to it, so that the conductor meansj is
  • auxiliary means responding to that portion of the current output of the generator which flows through the conductor means when the latter are in conductive condition, and associated with the first-mentioned voltage-dependent electro-magnetic means for increasing the energization of the latter, whereby upon increase of the output current of the generator beyond a predetermined value the voltage output of the generator is automatically reduced and the output current substantially limited to said predetermined value.
  • Fig. 1 is an electrical diagram illustrating one embodiment of the invention.
  • Fig. 2 is a diagram showing the VI characteristic of a component used in the embodiment illustrated by Fig. 1.
  • the regulating apparatus shown in Fig. 1 comprises two electromagnetic switches, the first of which has a voltage coil 10, a movable switching arm 11 and a stationary contact 12, while the other one comprises a cur rent coil 13, a movable switching arm 14 and a stationary contact 15.
  • the switch arm 11 is normally urged into closed position by suitable means including gravity, or by a spring 11a.
  • the switch arm 14 is urged, in a similar manner normally into its open position.
  • the movable switching arm 11 of the voltage-dependent switch is connected both to one end of the field winding 16 of a vehicle generator 17, as shown in Fig. l, and to a field resistor 18 connected in series with the field winding 16.
  • One end of the voltage coil 10 is connected to electrical ground and thereby to the negative brush of the generator, while the other end of this winding is connected to the positive supply conductor 22a coming from the positive generator brush.
  • the current coil 13 is connected in the positive supply line 22a between the positive brush of the generator and the stationary contact 15 of the second switch; when the switching arm 14 is moved into closed position, current is supplied via contact 15 to the battery 20 and possibly to other loads not shown in the circuit diagram.
  • a second winding 21 made of a great number of turns of thin wire is arranged for providing a bias magnetization of the current coil 13 and polarizing same so that the switching arm 14 is moved into the open position away from contact 15 as soon as, owing to insufiicient generator voltage, a return current would flow from the battery 20 to the generator.
  • the thus described process repeats regardless of whether the generator is working against the load formed by the current coil 13.
  • the bias magnetization coil 21 and the associated armature, not shown in the drawing, engaging the movable switching arm 14, are adjusted in such away that the switching arm 14 is moved towards the stationary contact 15 as soon as the generator voltage exceeds that of the battery 20.
  • a diode 23 is connected, according to this invention, in a circuit 22 parallel to the current coil 13.
  • An auxiliary winding 24 is connected in series with the diode 23; this winding 24 is mounted on an iron core, not shown in the drawing, which also serves as core of the voltage coil 10.
  • the diode 23 preferably consists of a semi-conducting germanium crystal which has, owing to a properly selected impurity, a characteristic (as shown in Fig. 2) with a pronounced bend or break at approximately 0.2 v. As long as the applied voltage U does not exceed the critical value of 0.2 v., the passing current I remains very weak, while it increases considerably in the area beyond the said voltage limit.
  • a characteristic of the type shown by Fig. 2 could be used for the present purpose.
  • the current coil 13 is dimensioned in a way to produce, at this maximum current, a voltage drop across the current coil 13 higher than the critical voltage at which the diode becomes fully conductive.
  • the portion of the load current flowing now through the auxiliary winding 24 and the diode 23 produces an auxiliary energization of the first switch so as to support the effect of the voltage coil 14 owing to this additional energization the switching arm 11 is kept for a longer period in its open position, during its repeated opening and closing cycles, than would be the case corresponding to the actually prevailing generator voltage output. Consequently, conditions are simulated that correspond to a higher generator voltage than the existing one.
  • the apparatus regulates, accordingly, the generator output to a voltage lower than the preselected value; this voltage output successively drops further if the load current keeps on increasing.
  • the described embodiment shows, consequently, a characteristic which results, up to the mentioned load-current limit value, in a substantially constant generator voltage output but, from the said limit value on, in a steep drop of the generator voltage.
  • an electromagnetically operated first regulator switch in circuit with the shunt exciting winding of said generator and movable between a first position in which the exciting current is permitted to increase, and a second position in which the exciting current is caused to decrease, including voltage-responding electro-magnetic means depending upon increasing voltage output of said generator for moving said first regulator switch into said second position; a second electro-magnetically operated switch in series between said generator and said load, and including a solenoid coil for operating said second switch between open and closed positions depending upon said output current flowing through said solenoid and said second switch; a conductor means connected in parallel with said solenoid coil and having a substantially linear characteristic with a pronounced break at a point represent a critical voltage-current ratio, said conductor means being substantially non-conductive unless a potential difference larger than said critical voltage is applied to it so that said conductor means is conductive only when the voltage drop, under load, across
  • a resistor in series connection with the shunt exciting winding of said generator for limiting the voltage output thereof; a normally closed first regulator switch including bias means for urging said switch into its closed position and being connected in parallel with said resistor for short-circuiting the latter when said switch is in closed position, and for reducing the exciting current when said switch is moved into its open position against the action of said bias means; voltage-dependent electro-magnetic means connected in parallel with said series combination of said shunt exciting winding and said resistor for moving said first regulator switch into its said open position when the voltage output of said generator reaches a value sutlicient to energize said electro-magnetic means for opening said first regulator switch; a normally open, electro-rnagnetically operable second switch connected in series between said generator and said load; a solenoid coil connected in series between said second switch and said generator for holding said second switch in closed position depending upon the current output of said
  • auxiliary means comprises an auxiliary solenoid coil con- 3 nected in series with said conductor means to form there- 2,707,263 with'a series-combination in parallel with said solenoid 2,760,140 operating said second switch, said auxiliary solenoid being 2,777,984 operativel y associated with said first regulator switch.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Control Of Charge By Means Of Generators (AREA)
US710548A 1957-01-24 1958-01-22 Generator regulating apparatus with diode Expired - Lifetime US2927261A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE357107X 1957-01-24
DE839591X 1957-01-24
DE2927261X 1957-01-24
DE240857X 1957-08-24
DE205605X 1957-08-24

Publications (1)

Publication Number Publication Date
US2927261A true US2927261A (en) 1960-03-01

Family

ID=66770123

Family Applications (1)

Application Number Title Priority Date Filing Date
US710548A Expired - Lifetime US2927261A (en) 1957-01-24 1958-01-22 Generator regulating apparatus with diode

Country Status (5)

Country Link
US (1) US2927261A (enrdf_load_stackoverflow)
JP (1) JPS367229Y1 (enrdf_load_stackoverflow)
AT (1) AT205605B (enrdf_load_stackoverflow)
CH (1) CH357107A (enrdf_load_stackoverflow)
GB (1) GB839591A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045171A (en) * 1959-03-02 1962-07-17 Westinghouse Electric Corp Electrical control apparatus
US3065400A (en) * 1959-04-11 1962-11-20 Bosch Gmbh Robert Generator installation
US3375431A (en) * 1964-02-28 1968-03-26 Lucas Industries Ltd Battery charging systems for road vehicles
CN116879956A (zh) * 2023-07-10 2023-10-13 电子科技大学 一种单相全桥可分离式小线圈发射系统的时序控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041200A1 (de) * 1980-11-03 1982-06-03 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und regler zur begrenzung des gasungsstroms bei batterien, insbesondere bei kraftfahrzeugen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617907A (en) * 1949-09-08 1952-11-11 Reconstruction Finance Corp Voltage regulator adjustment
US2707263A (en) * 1952-04-07 1955-04-26 D W Onan And Sons Inc Voltage and current regulator
US2760140A (en) * 1951-11-29 1956-08-21 Ranza A Crumbliss Motor vehicle electrical circuit
US2777984A (en) * 1953-07-15 1957-01-15 Menzel Friedrich Electrical generator regulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617907A (en) * 1949-09-08 1952-11-11 Reconstruction Finance Corp Voltage regulator adjustment
US2760140A (en) * 1951-11-29 1956-08-21 Ranza A Crumbliss Motor vehicle electrical circuit
US2707263A (en) * 1952-04-07 1955-04-26 D W Onan And Sons Inc Voltage and current regulator
US2777984A (en) * 1953-07-15 1957-01-15 Menzel Friedrich Electrical generator regulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045171A (en) * 1959-03-02 1962-07-17 Westinghouse Electric Corp Electrical control apparatus
US3065400A (en) * 1959-04-11 1962-11-20 Bosch Gmbh Robert Generator installation
US3375431A (en) * 1964-02-28 1968-03-26 Lucas Industries Ltd Battery charging systems for road vehicles
CN116879956A (zh) * 2023-07-10 2023-10-13 电子科技大学 一种单相全桥可分离式小线圈发射系统的时序控制方法

Also Published As

Publication number Publication date
GB839591A (en) 1960-06-29
CH357107A (de) 1961-09-30
JPS367229Y1 (enrdf_load_stackoverflow) 1961-04-11
AT205605B (de) 1959-10-10

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