EP0377327A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Generator voltage regulation with non-linear compensation
Assignee: Sundstrand Corp
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Filing: 1989-12-28
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Granted: —
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Expires: 2009-12-28
Abstract
Abstract A method of regulating the output voltage of an electric generator 10 combines a signal representative of the actual output of the generator with a reference signal to obtain a control signal proportional to the difference between the desired output and the actual output. The control signal is modified by a non-linear transfer function which is representative of the gain of the generator over an expected operating speed and load range. The exciter field current of the generator is controlled in response to the modified control signal, thereby causing the actual output to approach the desired output. Compensation for variation in generator gain is provided by a non-linear element, inserted in the voltage control loop such that the total loop gain is substantially constant over the operating speed and load range of the generator.
Inventors
- 👤 David Alan Fox
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/10; H02P9/102; H02P2101/00; H02P2101/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A method of regulating the output voltage of a variable speed electric generator, said method comprising the steps of: producing a first signal representative of the actual output of the generator 10; and combining said first signal with a reference signal to obtain a control signal which varies in proportion to the difference between a desired output of said generator and said actual output of said generator; characterized by the steps of modifying said control signal by a non-linear transfer function which is representative of the gain of said generator over an expected operating speed and load range of said generator; and controlling the current in an exciter field winding of said generator in response to the modified control signal, thereby causing said actual output to approach said desired output.
Claim 2
Independent Claim
130 words
A method of regulating the output voltage of a variable speed electric generator, said method comprising the steps of: producing a first signal representative of the actual output of the generator 10; and combining said first signal with a reference signal to obtain a control signal which varies in proportion to the difference between a desired output of said generator and said actual output of said generator; characterized by the steps of modifying said control signal by a non-linear transfer function which is representative of the gain of said generator over an expected operating speed and load range of said generator; and controlling the current in an exciter field winding of said generator in response to the modified control signal, thereby causing said actual output to approach said desired output.
Claim 3
Dependent Claim
16 words
The method of claim 1, further characterized in that said transfer function is an exponential function.
Claim 4
Dependent Claim
36 words
The method of claim 1, further characterized in that said transfer function is of the form where V in is the control signal, V o is the modified control signal, and C and K are constants.
Claim 5
Dependent Claim
43 words
The method of claim 1, further characterized in that said transfer function is of the form V o = V n in /K, where V in is the control signal, V o is the modified control signal, and n and K are constants.
Claim 6
Dependent Claim
137 words
A voltage regulator for regulating the output voltage of a variable speed electric generator, said voltage regulator comprising: means 14 for producing a first signal representative of the actual output of a generator; and means 20 for combining said first signal with a reference signal to obtain a control signal which varies in proportion to the difference between a desired output of said generator and said actual output of said generator; characterized by means 26 for modifying said control signal by a non-linear transfer function which is representative of the gain of said generator over an expected operating speed and load range of said generator; and means 28 for controlling the current in an exciter field winding of said generator in response to the modified control signal, thereby causing said actual output to approach said desired output.
Claim 7
Dependent Claim
137 words
A voltage regulator for regulating the output voltage of a variable speed electric generator, said voltage regulator comprising: means 14 for producing a first signal representative of the actual output of a generator; and means 20 for combining said first signal with a reference signal to obtain a control signal which varies in proportion to the difference between a desired output of said generator and said actual output of said generator; characterized by means 26 for modifying said control signal by a non-linear transfer function which is representative of the gain of said generator over an expected operating speed and load range of said generator; and means 28 for controlling the current in an exciter field winding of said generator in response to the modified control signal, thereby causing said actual output to approach said desired output.
Claim 8
Dependent Claim
17 words
The voltage regulator of claim 5, further characterized in that said transfer function is an exponential function.
Claim 9
Dependent Claim
38 words
The voltage regulator of claim 5, further characterized in that said transfer function is of the form where V in n is the control signal, V o is the modified control signal, and C and K are constants.
Claim 10
Dependent Claim
43 words
The voltage regulator of claim 5, further characterized in that said transfer function is of the form Vo = V n in /K, where V in is the control signal, V o is the modified control signal, and n and K are constants.
References Cited (Backward Citations)
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