Electric power adjustment device

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Solution Overview

Problem

The high cost of using storage batteries for frequency fluctuation adjustment in microgrids and the lack of effective methods to suppress electric power and frequency fluctuations in systems with increasing renewable energy sources, coupled with the risk of unnecessary power consumption adjustments in data centers.

Innovation Solution

An electric power adjustment device that calculates and adjusts the power consumption of computer groups and air conditioners based on frequency fluctuations, utilizing droop characteristics to manage power consumption without introducing new facilities, by pausing or re-executing workloads and adjusting air conditioner and CPU clock frequencies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If storage batteries are used to adjust frequency fluctuation of an electric power system, then frequency fluctuation suppression capability is improved, but cost becomes high

Engineering Contradiction:
Improvefrequency fluctuation suppression capabilityVSAvoidcost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces expensive storage batteries with inexpensive IT equipment (computers, air conditioners) that can be readily deployed and disposed of. These conventional devices are used to provide frequency adjustment capability through workload migration and power consumption control, eliminating the need for costly battery infrastructure while maintaining reliability.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent enables IT equipment to automatically participate in frequency adjustment by monitoring system frequency and autonomously adjusting their power consumption or workload status. This self-service mechanism eliminates the need for complex external control systems and expensive specialized equipment, allowing conventional IT devices to provide grid stabilization services.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If distributed power supply such as solar power generation and wind power generation becomes popular, then renewable energy utilization is improved, but power supply demand imbalance occurs

Engineering Contradiction:
Improverenewable energy utilizationVSAvoidpower supply demand balance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the frequency adjustment management device continuously monitors electric power system frequency and automatically generates control instructions for IT equipment. This closed-loop feedback system dynamically balances power supply and demand by adjusting IT equipment power consumption in response to frequency deviations caused by renewable energy fluctuations.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent enables IT equipment to perform dual functions: their primary computational tasks and their secondary function of providing frequency adjustment capability. This multi-functionality allows the same equipment to serve both data processing and grid stabilization purposes, accommodating renewable energy integration without requiring dedicated specialized infrastructure.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Use of energy by moving object

If power consumption of data center is adjusted to optimize energy generation efficiency, then energy efficiency is improved, but frequency fluctuation suppression capability becomes insufficient

Engineering Contradiction:
Improveenergy generation efficiencyVSAvoidfrequency fluctuation suppression capability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent segments the data center into multiple independently controllable units (individual computers, air conditioners, or groups thereof). This segmentation allows granular control of power consumption, enabling precise frequency adjustment by selectively adjusting specific equipment rather than uniformly adjusting the entire data center, thus maintaining both energy efficiency and frequency suppression capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic adjustment of IT equipment power consumption based on real-time frequency conditions. The system continuously adapts power consumption levels by migrating workloads between equipment or adjusting operational states, providing flexible and responsive frequency suppression capability that maintains energy efficiency while adapting to changing grid conditions.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250271919A1Electric power adjustment device
Publication Date: 2025.08.28 HITACHI LTD
  • US20250271919A1 patent drawing
  • US20250271919A1 patent drawing
  • US20250271919A1 patent drawing

AI summary

To provide an electric power adjustment device having adjustment capability for frequency fluctuation of an electric power system without newly introducing expensive facility and without executing useless electric power adjustment in the present invention. An electric adjustment device of the present invention calculates adjustment amounts of a computer group or air conditioner devices on the basis of frequency fluctuations in an electric power system, and determines an adjustment object for electric power consumption from among workloads executed by the computer group or air conditioner devices on the basis of the adjustment amounts.