Energy packet control of generator prime mover and control processing

Patent metadata

Field	Value
Publication number	US-2023268857-A1
Application number	US-202217676526-A
Country	US
Kind code	A1
Filing date	Feb 21, 2022
Priority date	Feb 21, 2022
Publication date	Aug 24, 2023
Grant date	—

Abstract

A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets, perform post-processing actions on the energy packets to generate processed energy packets, and convert the processed energy packets into a fuel valve reference. Post-processing may include a calibration correction to remove measurement artifacts.

First claim

1 . A device to control a prime mover of a machine, the device comprising:
an energy packet control comprising:
an energy packet calculator to determine an energy packet associated with a monitored machine, and
a control processor to perform post-processing on the energy packet and generate a processed energy packet;
a frequency control configured to:
receive system feedback associated with the monitored machine, and generate a frequency correction based on a setpoint feedback; and
adder circuitry configured to add the processed energy packet to the frequency correction, and provide a result as an input to a valve control mechanism.

2 . The device of claim 1 , wherein the control processor is configured to perform a calibration correction to remove measurement artifacts.

3 . The device of claim 2 , wherein the calibration correction comprises correction for measurement device delays.

4 . The device of claim 2 , wherein the calibration correction comprises correction for measurement device nonlinearities.

5 . The device of claim 2 , wherein the calibration correction is dynamically adjusted.

6 . The device of claim 1 , wherein the control processor is configured to remove signal outliers.

7 . The device of claim 6 , wherein the signal outliers are removed through use of an impulse rejection filter.

8 . The device of claim 1 , wherein the control processor comprises a filter.

9 . The device of claim 8 , wherein the filter is selected from the group consisting of a low-pass filter, a band-pass filter, a high-pass filter, a lead-lag filter, or a ramp rate limiting control.

10 . The device of claim 1 , wherein the control processor is configured to correct mechanical properties through input-output mapping.

11 . The device of claim 10 , wherein the input-output mapping is calculated as:

o
u
t
p
u
t
=

g

−
1

i
n
p
u
t

where:

f
l
o
w
=
g

v
a
l
v
e

p
o
s
i
t
i
o
n

And the desired relationship is
f
l
o
w
=
v
a
l
v
e

p
o
s
i
t
i
o
n
.

.

12 . A control system for a prime mover of a machine, the system comprising:
an energy packet control to:
calculate energy packets associated with a monitored machine,
perform post-processing actions on the energy packets to generate processed energy packets, and
convert the processed energy packets into a fuel valve reference; and
a frequency control to generate frequency error corrections and power setpoint adjustments for the monitored machine, wherein the energy packet control updates the fuel valve reference faster than the frequency control generates the frequency error corrections and the power setpoint adjustments; an adder circuit in communication with the energy packet control and the frequency control, the adder circuit configured to add the fuel valve reference and the frequency error corrections to determine a prime mover power reference; and a communications interface configured to provide the prime mover power reference to a fuel valve control mechanism of the monitored machine.

13 . The system of claim 12 , wherein the post-processing actions comprise calibration correction to remove measurement artifacts.

14 . The system of claim 12 , wherein the post-processing actions comprise using a filter.

15 . The system of claim 12 , wherein the post-processing actions comprise removing signal outliers.

16 . The system of claim 12 , wherein the post-processing actions comprise correction of mechanical properties through input-output mapping.

17 . A device to control a prime mover of a machine, the device comprising:
an energy packet measurement feedback loop comprising an energy packet control to calculate energy packets associated with a monitored machine, perform post-processing actions on the energy packets to generate processed energy packets, and convert the processed energy packets into a fuel valve reference; a frequency control feedback loop comprising:
a power measurement sensor to obtain a power measurement of the monitored machine, and
a frequency control in communication with a state complement filter, the frequency control to apply a droop factor to a blended power feedback and output a frequency power feedback; and
a fuel valve calculator in communication with an energy packet measurement control and the frequency control, the fuel valve calculator to add the fuel valve reference and the frequency power feedback to determine a prime mover power reference, and provide the prime mover power reference to a fuel valve control of the monitored machine.

18 . The system of claim 17 , wherein the post-processing actions comprise calibration correction to remove measurement artifacts.

19 . The system of claim 17 , wherein the post-processing actions comprise using a filter.

20 . The system of claim 17 , wherein the post-processing actions comprise correction of mechanical properties through input-output mapping.

Assignees

• Schweitzer Engineering Lab Inc

Inventors

• Schweitzer Iii Edmund O
• Zweigle Gregary C
• Manson Scott M
• Blood Ellery A

Classifications

• F02C9/263 Primary

  by means of fuel metering valves · CPC title

• F05D2270/71

  synthesized, i.e. parameter computed by a mathematical model · CPC title

• F05D2270/52

  by electrical means, e.g. relays or switches · CPC title

• H02P9/04 Primary

  Control effected upon non-electric prime mover and dependent upon electric output value of the generator · CPC title

• H02P9/10

  Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load · CPC title