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1. WO1979000441 - CONTROL CIRCUIT FOR A D.C.MOTOR

Publication Number WO/1979/000441
Publication Date 12.07.1979
International Application No. PCT/GB1978/000047
International Filing Date 04.12.1978
IPC
B60L 15/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
15Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
02characterised by the form of the current used in the control circuit
08using pulses
H02P 7/28 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18by master control with auxiliary power
24using discharge tubes or semiconductor devices
28using semiconductor devices
CPC
B60L 15/08
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
15Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
02characterised by the form of the current used in the control circuit
08using pulses
H02P 7/281
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18by master control with auxiliary power
24using discharge tubes or semiconductor devices
28using semiconductor devices
281the DC motor being operated in four quadrants
Y02T 10/64
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
60Other road transportation technologies with climate change mitigation effect
64Electric machine technologies in electromobility
Y02T 10/72
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
60Other road transportation technologies with climate change mitigation effect
72Electric energy management in electromobility
Y10S 388/902
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
388Electricity: motor control systems
90Specific system operational feature
902Compensation
Y10S 388/92
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
388Electricity: motor control systems
907Specific control circuit element or device
917Thyristor or scr
92Chopper
Applicants
Inventors
Priority Data
51066/7708.12.1977GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL CIRCUIT FOR A D.C.MOTOR
(FR) CIRCUIT DE COMMANDE POUR MOTEUR A COURANT CONTINU
Abstract
(EN)
A motor control circuit includes a chopper circuit (11) including a main switching element (14) which is connected in series with the motor armature (12). The chopper is controlled by a Schmitt bistable circuit (34) which operates to switch the main switching element on when the actual motor current falls more than a set amount below a demanded level and off when the actual motor current rises more than a set amount above the demanded level, the demand level is determined by the driver"s pedal controlled potentiometers (37, 38) but is required to be modified in accordance with the motor speed. Instead of using a mechanical speed transducer, the present invention includes a circuit (40) which is connected to the output of the bistable circuit (34) and produces a signal varying in accordance with the ratio of the on and off times of the main switching element.
(FR)
Un circuit de commande d"un moteur comprend un circuit interrupteur (11) comprenant un organe de commutation principal (14) qui est connecte en serie a l"armature du moteur (12). L"interrupteur est commande par un circuit Schmitt bistable (34) qui fonctionne en mettant sous tension l"organe de commutation principal lorsque le courant moteur tombe au-dessous d"une valeur correspondant a un niveau requis, et le mettant hors tension lorsque le courant moteur depasse une certaine valeur au-dessus du niveau requis, la valeur requise etant determinee par les potentiometres (37, 38) controles par la pedale du conducteur mais il est necessaire de la modifier en fonction de la vitesse du moteur. Au lieu d"utiliser un transducteur a vitesse mecanique, la presente invention comprend un circuit (40) qui est connecte a la sortie du circuit bistable (34) et qui produit un signal variant en fonction du rapport des nombres "arrets"/"marches" de l"organe de commutation principal.
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