Controller for a separately excited electric generator in a vehicle electrical system of a motor vehicle
First Claim
1. A method for controlling an excitation voltage of an externally excited electrical generator in an on-board electrical system of a motor vehicle, the method comprising:
- setting the excitation voltage for the generator at a first value corresponding to a first regulation scheme for of an actual output voltage of the generator at a predetermined setpoint output voltage of the generator with a processor of an electronic controller;
evaluating load requirements of at least one peak load consumer receiving electricity from the on-board electrical system with the processor;
identifying exceptional situations when the load requirements exceed a first threshold with the processor, wherein an exceptional situation includes at least one load requirement beyond a boundary of the first regulation scheme; and
in the event of an exceptional situation, setting a second regulation scheme including an associated temporary excitation output voltage of the generator beyond the boundary of the first regulation scheme.
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Accused Products
Abstract
The present disclosure relates to motor vehicles. The teachings thereof may be embodied in the operation and control of an externally excited electrical generator in an on-board electrical system of a motor vehicle. An example method may include: setting the excitation voltage within the scope of regulating an actual output voltage of the generator at a predetermined setpoint output voltage of the generator; evaluating load requirements of at least one peak load consumer supplied from the on-board electrical system; identifying exceptional situations based on the load requirements; and in the event of an exceptional situation, setting an associated temporary excitation output voltage of the generator.
25 Citations
9 Claims
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1. A method for controlling an excitation voltage of an externally excited electrical generator in an on-board electrical system of a motor vehicle, the method comprising:
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setting the excitation voltage for the generator at a first value corresponding to a first regulation scheme for of an actual output voltage of the generator at a predetermined setpoint output voltage of the generator with a processor of an electronic controller; evaluating load requirements of at least one peak load consumer receiving electricity from the on-board electrical system with the processor; identifying exceptional situations when the load requirements exceed a first threshold with the processor, wherein an exceptional situation includes at least one load requirement beyond a boundary of the first regulation scheme; and in the event of an exceptional situation, setting a second regulation scheme including an associated temporary excitation output voltage of the generator beyond the boundary of the first regulation scheme. - View Dependent Claims (2, 3, 4)
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5. A method for operating an externally excited electrical generator in an on-board electrical system of a motor vehicle, the method comprising:
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setting the excitation voltage for the generator below a first threshold corresponding to a first regulation scheme for an actual output voltage of the generator at a predetermined setpoint output voltage of the generator with a processor of an electronic controller; evaluating load requirements of at least one peak load consumer supplied from the on-board electrical system with the processor; and identifying exceptional situations when the load requirements exceed the first threshold with the processor, wherein an exceptional situation includes at least one load requirement beyond a boundary of the first regulation scheme; and in the event of an exceptional situation, setting a second regulation scheme including an associated temporary excitation output voltage of the generator beyond the boundary of the first regulation scheme; wherein setting the associated temporary excitation output voltage of a modified current supply includes driving a switch device to an excitation coil of the generator; wherein the excitation coil comprises at least two coil elements supplied with current individually.
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6. An apparatus for operating an externally excited electrical generator in an on-board electrical system of a motor vehicle, the method comprising:
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a drivable DC/DC converter supplied from the on-board electrical system, for generating an excitation voltage for the generator; a comparison device comparing an actual output voltage of the generator with a predetermined setpoint output voltage of the generator and outputting a deviation signal to the DC/DC converter to regulate the actual output voltage at the setpoint output voltage; and an evaluation device evaluating load requirements of at least one peak load consumer supplied from the on-board electrical system and used to detect exceptional situations when the load requirements exceed a first threshold, wherein an exceptional situation includes at least one load requirement beyond the setpoint output voltage. - View Dependent Claims (7, 8, 9)
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Specification