Prior art

The initial search results confirm how to use the USPTO search and general information about patent searching. I need to specifically look at the cited patents within the text of US10516270. The text lists "Patent Citations (6)" and "Family Cites Families (9)". I should focus on "Patent Citations" first, as these are the direct prior art cited by the examiner.

Here are the patent citations listed in US10516270B2:

1. US20090063065A1
2. US20100085035A1
3. US20100138070A1
4. US20120313593A1
5. US20140097683A1
6. US20140183961A1

I will now retrieve details for each of these patents and analyze them against the claims of US10516270.To identify the most relevant prior art for US patent 10516270, I will examine each patent cited within its "Patent Citations" section. For each cited reference, I will provide the full citation, publication/filing date, a brief description, and discuss which claims of US10516270 it potentially anticipates under 35 U.S.C. § 102.

The independent claims of US10516270 describe a method (Claim 1), an apparatus (Claim 7), and a non-transitory computer readable medium (Claim 15) for autonomously operating a microgrid power generator using hysteresis. Key aspects include:

• Obtaining a first grid parameter measurement (e.g., frequency).
• Comparing it to a turn-on threshold.
• Initiating power generation if below the turn-on threshold.
• Obtaining a second grid parameter measurement after initiation.
• Comparing it to a shut-down threshold that is greater than the turn-on threshold.
• Stopping power generation if the second measurement exceeds the shut-down threshold.

Here are the patent citations from US10516270:

1. US20090063065A1

• Full Citation: US20090063065A1, "Application of Multiple Voltage Droop Detection and Instruction Throttling Instances with Customized Thresholds Across a Semiconductor Chip," Weekly Roger D. [cite: The full patent text of US10516270B2 lists this citation.]
• Publication Date: March 5, 2009.
• Filing Date: August 31, 2007.
• Brief Description: This patent application describes methods and systems for managing power and performance within a semiconductor chip by dynamically adjusting voltage droop detection thresholds and throttling instructions. It focuses on internal chip operations rather than microgrid power generation.
• Potential Anticipation (35 U.S.C. § 102): This reference is unlikely to anticipate any claims of US10516270. While it mentions "droop detection" and "customized thresholds," its application domain (semiconductor chips) is entirely distinct from microgrid power generation. The "grid parameter" in US10516270 refers to electrical grid frequency or voltage in a power system, not voltage within a chip. Therefore, it does not disclose the specific elements of operating a power generator in a microgrid based on frequency-watt droop control with hysteresis as defined in claims 1, 7, and 15.

2. US20100085035A1

• Full Citation: US20100085035A1, "Method and apparatus for determining AC voltage waveform anomalies," Enphase Energy, Inc. [cite: The full patent text of US10516270B2 lists this citation.]
• Publication Date: April 8, 2010.
• Filing Date: October 8, 2008.
• Brief Description: This patent application describes methods and apparatus for detecting anomalies in an AC voltage waveform, particularly relevant for power conversion systems like micro-inverters. It focuses on monitoring grid health and identifying deviations.
• Potential Anticipation (35 U.S.C. § 102): This reference might relate to the "obtaining a first measurement of at least one grid parameter" step of Claim 1, as it describes measuring grid parameters (e.g., voltage anomalies). However, it does not describe the core hysteretic control for initiating and stopping power generation of a microgrid generator based on distinct turn-on and shut-down frequency thresholds, nor the coordination of multiple generators using droop control. Therefore, it is unlikely to fully anticipate the independent claims.

3. US20100138070A1

• Full Citation: US20100138070A1, "System and method for improving power grid stability," Ronald Beaudoin. [cite: The full patent text of US10516270B2 lists this citation.]
• Publication Date: June 3, 2010.
• Filing Date: February 26, 2009.
• Brief Description: This patent application describes systems and methods to improve power grid stability by using multiple distributed energy resources (DERs) and controlling their output based on grid conditions, potentially involving frequency regulation.
• Potential Anticipation (35 U.S.C. § 102): This patent touches on improving power grid stability and controlling DER output based on grid conditions, which is a broad area related to microgrids. However, without specific details regarding the use of distinct turn-on and shut-down thresholds for a generator in a hysteretic fashion, where the shut-down threshold is explicitly higher than the turn-on threshold to prevent oscillation (as defined in US10516270), it is not a direct anticipation of the independent claims. It may disclose general concepts of controlling generators in a microgrid but lacks the specific hysteresis mechanism for a fuel-based generator.

4. US20120313593A1

• Full Citation: US20120313593A1, "Arrangement for generating a control signal for controlling a power output of a power generation system," Knueppel Thyge. [cite: The full patent text of US10516270B2 lists this citation.]
• Publication Date: December 13, 2012.
• Filing Date: June 8, 2011.
• Brief Description: This patent application describes an arrangement for generating a control signal to control the power output of a power generation system, which may include renewable energy sources, based on grid parameters like frequency. It can involve droop characteristics.
• Potential Anticipation (35 U.S.C. § 102): This reference discusses controlling power output based on grid parameters and mentions droop control, which is foundational to US10516270. However, the specific inventive step of US10516270 lies in the hysteretic droop curve for a conventional generator, where the shut-down frequency is intentionally higher than the turn-on frequency by an amount greater than the expected frequency jump. If US20120313593A1 does not explicitly disclose this hysteretic behavior with distinct and offset turn-on/shut-down thresholds for a generator to prevent oscillatory behavior, it would not fully anticipate claims 1, 7, or 15. It likely represents general droop control rather than the specific hysteresis disclosed in US10516270.

5. US20140097683A1

• Full Citation: US20140097683A1, "Generator dispatching or load shedding control method and system for microgrid applications," Eaton Corporation. [cite: The full patent text of US10516270B2 lists this citation.]
• Publication Date: April 10, 2014.
• Filing Date: October 8, 2012.
• Brief Description: This patent application describes methods and systems for controlling generators or shedding loads in microgrid applications to manage power demand and supply, particularly during islanded operation. It focuses on coordinating resources within a microgrid.
• Potential Anticipation (35 U.S.C. § 102): This patent application is highly relevant as it deals directly with generator control in microgrids, including dispatching generators during islanded operation. This aligns with the context of US10516270. The core differentiating feature of US10516270 is the hysteretic control for generator turn-on/turn-off. If US20140097683A1 discloses a method of initiating and stopping a generator based on frequency thresholds, and particularly if those thresholds are distinct (a higher shut-down threshold than turn-on threshold) and specifically designed to prevent oscillation due to minimum operating power, then it could potentially anticipate claims 1, 7, and 15. This reference warrants a close examination for any disclosure of such a hysteretic mechanism for generator control.

6. US20140183961A1

• Full Citation: US20140183961A1, "Responding to Local Grid Events and Distributed Grid Events," Xtreme Power Inc. [cite: The full patent text of US10516270B2 lists this citation.]
• Publication Date: July 3, 2014.
• Filing Date: December 28, 2012.
• Brief Description: This patent application describes systems and methods for distributed energy resources (DERs) and energy storage systems to respond to various local and distributed grid events, including frequency and voltage deviations, to maintain grid stability.
• Potential Anticipation (35 U.S.C. § 102): Similar to US20100138070A1 and US20120313593A1, this patent broadly covers DERs and energy storage responding to grid events like frequency deviations to maintain stability. While it addresses the broader problem space of microgrid control, its anticipation of US10516270's independent claims hinges on whether it explicitly details the specific hysteretic control mechanism for a conventional generator with a shut-down frequency threshold distinctly higher than the turn-on frequency threshold to mitigate oscillations caused by the generator's minimum operating power. Without this specific feature, it would likely not anticipate the claims of US10516270.

Conclusion on Most Relevant Prior Art:

Based on the brief descriptions, US20140097683A1 (Eaton Corporation) appears to be the most relevant prior art. It directly addresses "generator dispatching or load shedding control method and system for microgrid applications," which is the core context of US10516270. The key to whether it fully anticipates US10516270's independent claims would be the explicit disclosure of the hysteretic turn-on and shut-off thresholds for a power generator, where the shut-down threshold is set higher than the turn-on threshold by a margin greater than the expected frequency jump from the generator's minimum operating power. If this specific hysteretic behavior is not present in US20140097683A1, then US10516270 would retain novelty in that specific control mechanism.