Method and system for evaluating core stack pressure
First Claim
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1. A method for evaluating core stack pressure comprising:
- (a) positioning a magnetic yoke near the core, the magnetic yoke being wound by an excitation winding;
(b) supplying current to the excitation winding to inject magnetic flux into the core;
(c) measuring a signal resulting from the injected magnetic flux; and
(d) using the measured signal to evaluate the core stack pressure.
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Abstract
A method for evaluating core stack pressure includes: positioning a magnetic yoke near the core, the magnetic yoke being wound by an excitation winding; supplying current to the excitation winding to inject magnetic flux into the core; measuring a signal resulting from the injected magnetic flux; and using the measured signal to evaluate the core stack pressure. A system for implementing the method includes the magnetic yoke; a current supply for supplying the current; a sensor for measuring the signal; and a computer for using the measured signal to evaluate core stack pressure.
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Citations
29 Claims
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1. A method for evaluating core stack pressure comprising:
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(a) positioning a magnetic yoke near the core, the magnetic yoke being wound by an excitation winding;
(b) supplying current to the excitation winding to inject magnetic flux into the core;
(c) measuring a signal resulting from the injected magnetic flux; and
(d) using the measured signal to evaluate the core stack pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 29)
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12. A method for evaluating core stack pressure comprising:
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(a) repeating, at different positions of the core, (1) positioning a magnetic yoke near two teeth of the core, the magnetic yoke being wound by an excitation winding;
(2) supplying current to the excitation winding to inject magnetic flux into the two teeth of the core; and
(3) measuring a signal resulting from the injected magnetic flux; and
(b) using the measured signals to evaluate the core stack pressure. - View Dependent Claims (13, 14)
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15. A system for evaluating core stack pressure comprising:
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(a) at least one magnetic yoke wound by an excitation winding for being positioned near at least one tooth of the core;
(b) a current supply for supplying current to the excitation winding to inject magnetic flux into the at least one tooth of the core;
(c) a sensor for measuring a signal resulting from the injected magnetic flux; and
(d) a computer for using the measured signal to evaluate core stack pressure. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A system for evaluating core stack pressure comprising:
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(a) at least one magnetic yoke wound by an excitation winding for being positioned near at least one tooth of the core;
(b) means for supplying current to the excitation winding to inject magnetic flux into the at least one tooth of the core;
(c) means for measuring a signal resulting from the injected magnetic flux; and
(d) means for using the measured signal to evaluate core stack pressure.
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Specification