FEEDFORWARD PARAMETER ESTIMATION FOR ELECTRIC MACHINES
First Claim
1. A method for estimating at least one parameter associated with an electric machine, the electric machine operable coupled to a controller, the controller controlling operation of the electric machine, the method comprising:
- measuring a temperature of the controller to obtain a measured temperature, utilizing a temperature sensor;
estimating a temperature of the electric machine to obtain a first estimated temperature, utilizing a first temperature estimation filter associated with the electric machine, based on the measured temperature; and
estimating at least one parameter associated with the electric machine based on the estimated temperature of the electric machine.
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Accused Products
Abstract
A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller responsive to at least one of: a current sensor, and a temperature sensor. Where the controller executes a parameter estimation process, which is responsive to at least one of: a current value and a temperature estimate and the resultant of the parameter estimation process representing an estimate parameter of the electric machine. The parameter estimation includes a method for estimating a temperature of the electric machine comprising: the temperature sensor operatively connected to and transmitting a temperature signal corresponding to a measured temperature to a controller, which executes the temperature estimation process responsive to a temperature signal from the temperature sensor.
88 Citations
14 Claims
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1. A method for estimating at least one parameter associated with an electric machine, the electric machine operable coupled to a controller, the controller controlling operation of the electric machine, the method comprising:
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measuring a temperature of the controller to obtain a measured temperature, utilizing a temperature sensor;
estimating a temperature of the electric machine to obtain a first estimated temperature, utilizing a first temperature estimation filter associated with the electric machine, based on the measured temperature; and
estimating at least one parameter associated with the electric machine based on the estimated temperature of the electric machine. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for estimating at least one parameters associated with an electric machine comprising:
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a controller configured to be operable coupled to the electric machine;
a temperature sensor configured to generate a signal indicative of a temperature of the controller; and
the controller configured to determine a measured temperature associated with the controller based on the signal, the controller further configured to estimate a temperature of the electric machine to obtain a first estimated temperature, utilizing a first temperature estimation filter associated with the electric machine, based on the measured temperature, the controller further configured to estimate at least one parameter associated with the electric machine based on the estimated temperature of the electric machine. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification