Systems and methods for running an air compressor using a permanent magnet generator

Patent metadata

Field	Value
Publication number	US-10907627-B2
Application number	US-201715797851-A
Country	US
Kind code	B2
Filing date	Oct 30, 2017
Priority date	Oct 30, 2017
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

Systems and methods are disclosed of an engine driven power system that includes a permanent magnet generator electrically connected to an energy storage device. An air compressor is coupled to the permanent magnet generator via a clutch. A controller provides power from the energy storage device to the permanent magnet generator to turn the permanent magnet generator to drive the air compressor via the clutch to increase an air pressure level.

First claim

What is claimed is:

1. An engine driven power system, comprising:
a permanent magnet generator electrically connected to an energy storage device;
an air compressor coupled to the permanent magnet generator via a clutch;
a pressure sensor configured to measure an air pressure level; and
a controller configured to:
provide power from the energy storage device to the permanent magnet generator to turn the permanent magnet generator to drive the air compressor via the clutch to increase the air pressure level; and
control the energy storage device to provide power to the permanent magnet generator when the air pressure level drops below a threshold low-pressure level.

2. The engine driven power system as defined in claim 1 , the controller to control the energy storage device to disconnect from the permanent magnet generator when the air pressure level exceeds a threshold high-pressure level.

3. The engine driven power system as defined in claim 1 , wherein the engine is detachably coupled to the permanent magnet generator via a second clutch, the engine configured to drive the permanent magnet generator when coupled to the permanent magnet generator via the second clutch.

4. The engine driven power system as defined in claim 3 , the controller further configured to monitor a speed of the engine.

5. The engine driven power system as defined in claim 4 , the controller further configured to control the permanent magnet generator to couple with the engine via the second clutch in response to the engine speed increasing above a threshold level such that the engine drives the permanent magnet generator.

6. The engine driven power system as defined in claim 4 , the controller further configured to control the permanent magnet generator to decouple from the engine in response to the engine speed decreasing below a threshold level.

7. The engine driven power system as defined in claim 3 , further comprising a converter connecting the permanent magnetic generator to the energy storage device.

8. The engine driven power system as defined in claim 7 , wherein the converter is configured to condition power from the permanent magnetic generator to provide battery power to recharge the energy storage device when the permanent magnet generator is being driven by the engine via the second clutch.

9. The engine driven power system as defined in claim 7 , wherein the converter is configured to condition power from the energy storage device to drive the permanent magnetic generator when the permanent magnetic generator is decoupled from the engine.

10. The engine driven power system of claim 1 , wherein the permanent magnetic generator is configured to generate power for a power output and to drive the air compressor at the same time.

11. An engine driven power system, comprising:
a permanent magnet generator electrically connected to an energy storage device;
an air compressor coupled to the permanent magnet generator via a clutch;
a pressure sensor configured to measure an air pressure level; and
a controller configured to:
provide power from the energy storage device to the permanent magnet generator to turn the permanent magnet generator to drive the air compressor via the clutch to increase the air pressure level; and
control the energy storage device to disconnect from the permanent magnet generator when the air pressure level exceeds a threshold high-pressure level.

12. The engine driven power system as defined in claim 11 , the controller to control the energy storage device to provide power to the permanent magnet generator when the air pressure level drops below a threshold low-pressure level.

13. An engine driven power system, comprising:
a permanent magnet generator electrically connected to an energy storage device;
an air compressor coupled to the permanent magnet generator via a clutch;
wherein the engine is detachably coupled to the permanent magnet generator via a second clutch; and
a controller configured to:
monitor a speed of the engine;
provide power from the energy storage device to the permanent magnet generator to turn the permanent magnet generator to drive the air compressor via the clutch to increase an air pressure level; and
control the permanent magnet generator to couple with the engine via the second clutch in response to the engine speed increasing above a threshold level such that the engine drives the permanent magnet generator.

14. The engine driven power system as defined in claim 13 , further comprising a pressure sensor configured to measure the air pressure level.

15. The engine driven power system as defined in claim 14 , the controller to control the energy storage device to disconnect from the permanent magnet generator when the air pressure level exceeds a threshold high-pressure level.

16. The engine driven power system as defined in claim 13 , the controller further configured to control the permanent magnet generator to decouple from the engine in response to the engine speed decreasing below a threshold level.

17. The engine driven power system of claim 13 , wherein the permanent magnetic generator is configured to generate power for a power output and to drive the air compressor simultaneously.

Assignees

• Illinois Tool Works

Inventors

• Ihde Jeffery R

Classifications

• Y02B30/70

  Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating · CPC title

• F05D2270/301

  Pressure · CPC title

• F05D2220/76

  an electrical generator · CPC title

• F04D27/0261

  by varying driving speed · CPC title

• F04D25/0673 Primary

  Battery powered · CPC title