US4082987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and control device for switch means adapted to modify the coupling of groups of elements of an electrochemical generator supplying an electric motor
Assignee: Automobiles Citroen SA
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Filing: 1973-09-13
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Granted: 1978-04-04
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Expires: 1993-09-13
Abstract
Abstract The method is especially suitable for two identical groups of elements, and for supplying a continuous current traction motor. The commutating means modifies the coupling of groups of elements from parallel to series and conversely, as a function of the power demanded for driving the motor. The current supply of the motor is ensured by pulses delivered by a chopper type device monitored as a function of the power demanded. The commutating means e.g. a thyristor are actuated in synchronism with the operation of the chopper type device.
Inventors
- 👤 Jean Cadiou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:34
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/02; B60L15/04; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
142 words
Apparatus for controlling a power supply for an electric motor comprising: at least two groups of electromechanical generating means for supplying electrical energy to said motor; means for monitoring at least one operating condition of said motor; chopper means coupled between the output of said at least two groups of generating means and an input of said motor for supplying pulse signals to energize said motor; commutation means coupled to said at least two groups of electrochemical generating means for switching the coupling of said at least two groups between series and parallel coupling as a function of said operating condition of said motor; and control means coupled to outputs of said monitoring means and chopper means and to an input of said commutation means for synchronizing the switching of said commutation means with the pulse producing operation of said chopper means.
Claim 2
Dependent Claim
142 words
Apparatus for controlling a power supply for an electric motor comprising: at least two groups of electromechanical generating means for supplying electrical energy to said motor; means for monitoring at least one operating condition of said motor; chopper means coupled between the output of said at least two groups of generating means and an input of said motor for supplying pulse signals to energize said motor; commutation means coupled to said at least two groups of electrochemical generating means for switching the coupling of said at least two groups between series and parallel coupling as a function of said operating condition of said motor; and control means coupled to outputs of said monitoring means and chopper means and to an input of said commutation means for synchronizing the switching of said commutation means with the pulse producing operation of said chopper means.
Claim 3
Dependent Claim
50 words
The apparatus according to claim 1, wherein said control means comprises at least one AND gate having a first input coupled to an output of said chopper means and a second input coupled to an output of said monitoring means, said gate having an output coupled to said commutation means.
Claim 4
Dependent Claim
48 words
The apparatus according to claim 2, wherein said gate means generates an output signal when a signal corresponding to the opening of said chopper means appears at said first input concurrently with a signal corresponding to the condition monitored by said monitoring means appearing at said second input.
Claim 5
Dependent Claim
54 words
The apparatus according to claim 2, wherein said commutation means comprises electronic switch means having first and second terminals coupled to respective ones of said generating means and a control electrode coupled to said AND gate output; and wherein a signal appears at said first gate input upon the closing of said chopper means.
Claim 6
Dependent Claim
14 words
The apparatus according to claim 4, wherein said electronic switch means comprises a thyristor.
Claim 7
Independent Claim
87 words
A method for controlling the supply of power to an electric motor from at least two groups of electrochemical generating means, comprising the steps of: chopping the output signal from said generating means to provide a pulse signal input to said motor; monitoring at least one operating condition of said motor; and switching the connections of said at least two groups between series and parallel electrical connections in synchronism with the chopping of said generating means output signal and as a function of said monitored operating condition.
Claim 8
Independent Claim
87 words
A method for controlling the supply of power to an electric motor from at least two groups of electrochemical generating means, comprising the steps of: chopping the output signal from said generating means to provide a pulse signal input to said motor; monitoring at least one operating condition of said motor; and switching the connections of said at least two groups between series and parallel electrical connections in synchronism with the chopping of said generating means output signal and as a function of said monitored operating condition.
Claim 9
Dependent Claim
57 words
The method according to claim 6, further comprising: switching said electrical connections of said at least two groups only during the period of time that the output signal of said generating means is cut off from being transmitted to said motor; and resuming said chopping operation only after said switching of said electrical connections has been completed.
Claim 10
Independent Claim
140 words
A method of operating apparatus for controlling the supply of power to an electric motor, said apparatus comprising first and second electrochemical generating means, commutation means coupled to said first and second electrochemical generating means for switching said generating means between series and parallel connections, and chopper means coupling said generating means to said motor, said method comprising the steps of: chopping the output signal from said generating means to provide a pulse signal input to said motor, generating a series connection signal or a parallel connection signal depending upon the operating condition of said motor, and actuating said commutation means to switch said generating means in synchronism with the operation of said chopper means to a series or parallel connection when said series or parallel connection signal is generated respectively, and said chopper means is in its non-conducting state.
Claim 11
Independent Claim
140 words
A method of operating apparatus for controlling the supply of power to an electric motor, said apparatus comprising first and second electrochemical generating means, commutation means coupled to said first and second electrochemical generating means for switching said generating means between series and parallel connections, and chopper means coupling said generating means to said motor, said method comprising the steps of: chopping the output signal from said generating means to provide a pulse signal input to said motor, generating a series connection signal or a parallel connection signal depending upon the operating condition of said motor, and actuating said commutation means to switch said generating means in synchronism with the operation of said chopper means to a series or parallel connection when said series or parallel connection signal is generated respectively, and said chopper means is in its non-conducting state.
Claim 12
Dependent Claim
60 words
The method according to claim 8 further comprising the step of: generating a prevention signal to prevent closing of said chopper means until said commutation means has completed the switching of said generating means, said prevention signal being coupled to said chopper means to delay delivery of current to said motor until switching of said generating means has been completed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |