System and method for detecting and controlling a motor

Patent metadata

Field	Value
Publication number	US-9438159-B2
Application number	US-201414316421-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Jun 26, 2014
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A system including an electric motor and a control software operable to control the operation of a plurality of different types of electric motors. The control software is provided with or identifies a particular control algorithm from among a plurality of such algorithms and/or a particular set of operational parameters from among a plurality of such sets for the motor with which it is assembled. The sets of operational parameters are stored in one or more read-only memories, which may be electrically erasable programmable read-only memories. To identify the particular motor control algorithm and/or the particular set of operational parameters, the control software causes the motor to be energized, senses an actual operating parameter of the motor, and identifies the particular motor control algorithm and/or the particular set of operational parameters based on the sensed actual operating parameter.

First claim

Having thus described one or more embodiments of the invention, what is claimed as new and desired to be protected by Letters Patent includes the following:

1. An electric motor system comprising:
an electric motor; and
a motor control subsystem in communication with the electric motor and configured to control operation of the electric motor, the motor control subsystem including
a power inverter configured to provide power to the electric motor,
a microprocessor in communication with the power inverter, and configured to execute a control software,
a first memory in communication with the microprocessor and containing the control software and a plurality of motor control algorithms, including a particular motor control algorithm which is appropriate for the electric motor, wherein the control software is configured to control the operation of a plurality of different types of electric motors and to identify the particular motor control algorithm from among the plurality of motor control algorithms and to use the particular motor control algorithm to control operation of the electric motor, wherein the particular motor control algorithm is identified once and then remembered by the motor control subsystem as being appropriate for the electric motor, and
a second memory in communication with the microprocessor and containing a particular set operational parameters, wherein the particular motor control algorithm uses the particular set of operational parameters to control operation of the electric motor,
wherein the control software identifies the particular set of operational parameters in the second memory and transfers the identified particular set of operational parameters from the second memory to the particular motor control algorithm for use in controlling operation of the electric motor.

2. The system as set forth in claim 1 , wherein the electric motor is an electric induction motor or a permanent magnet motor.

3. The system as set forth in claim 1 , wherein the control software causes the power inverter to energize the electric motor, senses an actual operating parameter of the electric motor, and identifies the particular motor control algorithm based on the sensed actual operating parameter.

4. The system as set forth in claim 1 , wherein the second memory contains a plurality of sets of operational parameters, including the particular set of operational parameters, and the control software identifies the particular set of operational parameters from among the plurality of sets of operational parameters.

5. The system as set forth in claim 4 , wherein the control software causes the power inverter to energize the electric motor, senses an actual operating parameter of the electric motor, and identities the particular set of operational parameters based on the sensed actual operating parameter.

6. A method of controlling an electric motor in an electric motor system having a motor control subsystem, the motor control subsystem including a first memory and a second memory, the method comprising the steps of:
(1) providing in the first memory a control software configured to control a plurality of different types of electric motors including the electric motor;
(2) providing a plurality of motor control algorithms, including a particular motor control algorithm which is appropriate for controlling the type of the electric motor, and identifying the particular motor control algorithm from among the plurality of motor control algorithms, wherein the particular motor control algorithm is identified once and then remembered by the motor con roll subsystem system as being appropriate for the electric motor;
(3) providing in the second memory a particular set of operational parameters for the electric motor;
(4) identifying the particular set of operational parameters; and
(5) transferring the identified particular set of operational parameters from the second memory to the particular motor control algorithm for use by the control software in controlling the electric motor.

7. The method as set forth in claim 6 , wherein the electric motor is an electric induction motor or is permanent magnet motor.

8. The method as set forth in claim 6 , wherein step (4) includes energizing the electric motor, sensing an actual operating parameter of the energized electric motor, and identifying the particular motor control algorithm based on the sensed actual operating parameter.

9. The method as set forth in claim 6 , wherein step (3) includes providing a plurality of sets of operational parameters, including the particular set of operational parameters, in the second memory.

10. The method as set forth in claim 9 , wherein step (4) includes energizing the electric motor, sensing an actual operating parameter of the energized electric motor, and identifying the particular set of operational parameters based on the sensed actual operating parameter.

11. An electric motor system comprising:
an electric motor; and
a motor control subsystem in communication with the electric motor and configured to control operation of the electric motor, the motor control subsystem including
a power inverter configured to provide power to the electric motor,
a microprocessor in communication with the power inverter, and configured to execute a control software,
a first memory in communication with the microprocessor and containing the control software and a plurality of motor control algorithms, including a particular motor control algorithm which is appropriate for the electric motor, wherein the control software is configured to control the operation of a plurality of different types of electric motors and to identify the particular motor control algorithm from among the plurality of motor control algorithms and to use the particular motor control algorithm to control operation of the electric motor, wherein the particular motor control algorithm is identified each time the electric motor is started, and
a second memory in communication with the microprocessor and containing a particular set of operational parameters, wherein the particular motor control algorithm uses the particular set of operational parameters to control operation of the electric motor,
wherein the control software identifies the particular set of operational parameters in the second memory and transfers the identified particular set of operational parameters from the second memory to the particular motor control algorithm for use in controlling operation of the electric motor.

12. A method of controlling an electric motor in an electric motor system having a motor control subsystem, the motor control subsystem including a first memory and a second memory, the method comprising the steps of:
(1) providing in the first memory a control software configured to control a plurality of different types of electric motors including the electric motor;
(2) providing a plurality of motor control algorithms, including a particular motor control algorithm which is appropriate for controlling the type of the electric motor, and identifying the particular motor control algorithm from among the plurality of motor control algorithms, wherein the particular motor control algorithm is identified each time the electric motor is started;
(3) providing in the second memory a particular set of operational parameters for the electric motor;
(4) identifying the particular set of operational parameters; and
(5) transferring the identified particular set of operational parameters from the second memory to the particular motor control algorithm for use by the control software in controlling the electric motor.

13. An electri

Assignees

• Nidec Motor Corp

Inventors

• Schock Christopher D
• Shahi Prakash B
• Clark Bret S
• Henderson Michael I

Classifications

• H02P27/06

  using DC to AC converters or inverters (H02P27/05 takes precedence) · CPC title

• H02P23/0027 Primary

  using different modes of control depending on a parameter, e.g. the speed · CPC title

• H02P23/0077

  Characterised by the use of a particular software algorithm · CPC title

• H02P23/0031

  implementing a off line learning phase to determine and store useful data for on-line control · CPC title