Dual Power Supply Control for Load-Based Generator Switching

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Solution Overview

Problem

Existing power generation control systems are inefficient in selecting the appropriate power supply apparatus based on user-defined load levels, leading to suboptimal fuel consumption, noise levels, and power output, as they maintain engine operation regardless of load requirements.

Innovation Solution

A power generation control system that includes a setting unit to determine a control mode based on user conditions, a calculation unit to calculate total load, and a determination unit to select between a first power supply apparatus (engine-based) and a second power supply apparatus (battery-based) based on load thresholds and control modes, ensuring optimal power supply.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If parallel operation control is performed in multiple generators using an engine as a power source, then power can be continuously output regardless of load, but the engine remains in operating state leading to increased fuel consumption and running costs

Engineering Contradiction:
Improvecontinuous power outputVSAvoidfuel consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The control system dynamically switches between parallel operation mode (when high reliability is needed) and individual operation mode (when load is low), making the system adaptable to varying conditions rather than maintaining a fixed operating state

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameters of the generators by switching between different control modes (parallel/individual operation) based on load conditions, thereby optimizing fuel consumption while maintaining required power output

Inventive Principle:
Principle #35Parameter changes

2Power

If the engine is kept in operating state to maintain power output capability, then power can be supplied regardless of load level, but running costs and fuel consumption increase

Engineering Contradiction:
Improvepower output capabilityVSAvoidrunning cost
Core Design Contradiction:
PowerVSLoss of energy

Solution Approach 1:

Instead of keeping all generators in full operating state, the system applies partial action by switching to individual operation when full parallel operation is not needed, reducing energy loss while maintaining sufficient power capability

Inventive Principle:
Principle #16Partial or excessive action

3Use of energy by moving object

If a generator corresponding to load level is selected based on control mode, then fuel consumption and running costs are reduced, but the system becomes more complex in determining which generator to select

Engineering Contradiction:
Improvefuel consumptionVSAvoidcontrol system complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The control system is segmented into distinct operational modes (parallel operation mode and individual operation mode) with clear switching conditions, making the complexity manageable through structured decision-making rather than continuous optimization

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12081029B2Power generation control system and power generation control method
Publication Date: 2024.09.03 HONDA MOTOR CO LTD
  • US12081029B2 patent drawing
  • US12081029B2 patent drawing
  • US12081029B2 patent drawing

AI summary

A power generation control system comprises: a setting unit configured to set a control mode corresponding to a use condition of a user who uses a first power supply apparatus and a second power supply apparatus; a calculation unit configured to calculate a total load obtained by adding output power of the first power supply apparatus and output power of the second power supply apparatus; a determination unit configured to determine a load level of the total load based on a comparison between the total load and a load threshold; and a control unit configured to select a power supply apparatus corresponding to the load level among the first power supply apparatus and the second power supply apparatus based on the control mode, and cause the power supply apparatus to supply power.