Motor controller with externally adjustable power rate constraints

• US 9,026,325 B1
• Filed: 03/10/2011
• Issued: 05/05/2015
• Est. Priority Date: 03/10/2011
• Status: Active Grant

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Inventors: Belkhayat, Mohamed, Roettger, Thomas D., Nordby, Craig J., Maurio, Joseph M., Patalon, William
• Primary Examiner(s): Keith, Jack W
• Assistant Examiner(s): Nguyen, Chuong P
• Application Number:
  US13/045,344
• Time in Patent Office: 1,517 Days
• Field of Search: 701/3, 701/7, 701/21, 701/54, 318/3, 318/4, 318/34, 318/59, 318/61, 318/64, 318/66, 318/98, 440/1, 440/84, 440/86, 440/87, 244/75.1, 244/76, 244/191, 244/194
• US Class Current: 701/54
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2200/32 Waterborne vessels
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/425 Temperature
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 3/0061 relating to electrical machines
• CPC Class Codes: B60L 3/0084 relating to control modules
• CPC Class Codes: B60L 3/06 Limiting the traction current under mechanical overload conditions
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 50/13 using AC generators and AC motors
• CPC Class Codes: B63H 2005/1258 with electric power transmission to propellers, i.e. with integrated electric propeller motors
• CPC Class Codes: B63H 2021/216 using electric control means
• CPC Class Codes: B63H 21/21 Control means for engine or transmission, specially adapted for use on marine vessels
• CPC Class Codes: B63H 21/213 Levers or the like for controlling the engine or the transmission, e.g. single hand control levers
• CPC Class Codes: B63H 23/24 electric dynamo-electric machines H02K
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

This invention relates to the field of very high current integrated power systems and defines a system where an alternating current inductive generator (13), controlled by a generator voltage regulator (14), is coupled to alternating current inductive load (11), controlled by an alternating current inductive load controller (12), all controlled by a supervisory control and data acquisition system (17) with externally adjustable power rate constraints (21) that define a new anticipatory mode integrated power system (10).

Claims

1. A method for defining and implementing a real-time and anticipatory integrated power system comprising of an alternating current or direct current load, a main alternating current generator, and a supervisory control and data acquisition system, comprising the steps of:

receiving in the supervisory control and data acquisition system an input signal corresponding to operator commanded change in load power;

accessing in the supervisory control and data acquisition system a constant parameter set of data containing predefined data on the operating characteristics of the integrated power system and data for all the integrated power system components under the control of the supervisory control and data acquisition system;

receiving in the supervisory control and data acquisition system a dynamic parameter set of data containing digital data that defines the integrated power system state and margins of safety of integrated power system components and generating digital control signals to increase or decrease generated power rate of said load and said venerator for maintaining real-time anticipatory control of the alternating current inductive load and generator; and

,

computing in the supervisory control and data acquisition system a new dynamic parameter set of data corresponding to new real-rime and anticipated load power state of the integrated power system from the operator commanded change in load power input, the dynamic parameter set, and the constant parameter set values in order to implement operator commanded change in load power and the rate of power delivered to the alternating current or direct current load in the integrated power system within standards of integrated power system stability defined in the constant parameter set of data.

2. The method of claim 1 wherein the supervisory control and data acquisition system computes real-time and anticipatory characteristics of the energy flow from the generator to the load and a rate at which the power can change, all from the commanded change in load power, constant parameter set, and dynamic parameter set data values.

3. The method of claim 1 wherein the supervisory control and data acquisition system dynamic parameter set includes measured and calculated values for real-time and anticipatory system power margin.

4. The method of claim 1 wherein the supervisory control and data acquisition system dynamic parameter set includes measured and calculated values for real-time power transient characteristics with respect to the commanded change in load power.

5. The method of claim 1 wherein the supervisory control and data acquisition system dynamic parameter set includes calculated values for anticipated power transient with respect to the commanded change in load power.

6. The method of claim 1 wherein the supervisory control and data acquisition system dynamic parameter set includes real-time and anticipated measured and calculated values for all integrated power system sensors and sensor systems.

7. The method of claim 1 wherein the supervisory control and data acquisition system dynamic parameter set, includes calculated power rate constraints that can be enforced upon the motor with respect to the commanded change in load power.