Feedback parameter estimation for electric machines
First Claim
1. A system for estimating a parameter of an electric machine, comprising:
- a controller operatively connected to a switching device said switching device operatively connected between said electric machine and a power source, said switching device being coupled to said controller;
a current sensing device operatively connected to said electric machine and said controller;
said controller executing a parameter estimation process responsive to at least one of, said current value, a torque command indicative of a desired torque for said electric machine, a resultant of said parameter estimation process representing a parameter of said electric machine.
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Abstract
A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller executes a parameter estimation process, which is responsive to at least one of: a current value and a torque command and the resultant of the parameter estimation process representing an estimated parameter of the electric machine. The parameter estimation includes a method for estimating a temperature of the electric machine comprising: a temperature sensor operatively connected to and transmitting a temperature signal corresponding to a measured temperature to a controller, which executes a temperature estimation process responsive to a temperature signal from a temperature sensor.
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Citations
80 Claims
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1. A system for estimating a parameter of an electric machine, comprising:
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a controller operatively connected to a switching device said switching device operatively connected between said electric machine and a power source, said switching device being coupled to said controller;
a current sensing device operatively connected to said electric machine and said controller;
said controller executing a parameter estimation process responsive to at least one of, said current value, a torque command indicative of a desired torque for said electric machine, a resultant of said parameter estimation process representing a parameter of said electric machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for estimating a parameter of an electric machine, comprising:
receiving at least one of;
a torque command signal indicative of a desired torque for said electric machine;
a current value;
wherein said estimating is a resultant of a parameter estimation process responsive to said torque command signal and said current value, a resultant of said parameter estimation process representing said parameter of said electric machine. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A storage medium encoded with computer program code,
said code comprising instructions for causing a controller to implement a method for estimating a parameter of an electric machine the method comprising: receiving at least one of;
a torque command signal indicative of a desired torque for said electric machine;
a current value; and
wherein said estimating is a resultant of a parameter estimation process responsive to at least one of said torque command signal and said current value, a resultant of said parameter estimation process representing said parameter of said electric machine. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A computer data signal embodied in a carrier wave, the computer data signal comprising:
code configured to cause a controller to implement a method for estimating a parameter of an electric machine, the method comprising;
receiving at least one of;
a torque command signal indicative of a desired torque for said electric machine;
a current value; and
wherein said estimating is a resultant of a parameter estimation process responsive to at least one of said torque command signal and said current value, a resultant of said parameter estimation process representing said parameter of said electric machine. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80)
Specification