Climate Control Load Synchronization for Stable DC Power

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Climate control systems in transport face instability due to asynchronous parallel loads, leading to unstable ripple current demands and reduced battery charging efficiency.

Innovation Solution

Implementing feedback-based load control by monitoring current demands from DC components and synchronizing power supply using phase angle control to stabilize power systems and increase charging efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If asynchronous parallel loads are used in climate control systems, then device complexity is reduced and ease of operation is improved, but power system stability deteriorates due to unstable ripple current demands

Engineering Contradiction:

Improveease of operationVSAvoidpower system stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The controller monitors current demand from each DC component and uses this feedback to determine synchronization patterns, adjusting power distribution to maintain system stability while supporting asynchronous loads

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system implements discontinuous DC format with periodic synchronization patterns, where power is supplied in controlled intervals to asynchronous loads, creating a rhythmic structure that prevents chaotic current demands

Inventive Principle:

Principle #19Periodic action

2Adaptability or versatility

If multiple asynchronous DC components operate independently, then adaptability and versatility are improved, but energy efficiency deteriorates due to reduced battery charging efficiency

Engineering Contradiction:

ImproveadaptabilityVSAvoidbattery charging efficiency

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The controller continuously monitors current demand from each DC component and adjusts power distribution accordingly, ensuring optimal energy utilization and maximizing battery charging efficiency while maintaining system adaptability

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system changes the temporal parameters of power supply by implementing synchronization patterns that coordinate when power is delivered to different DC components, transforming the energy distribution characteristics to improve charging efficiency

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10230236B2Method and system for feedback-based load control of a climate control system in transport

Publication Date: 2019.03.12 THERMO KING CORP

AI summary

Methods and systems for feedback-based load control of a climate control system while in transport are provided. The method can include monitoring a current demand from each of a plurality of DC components of the climate control system. The method can also include determining whether the current demand for two or more of the plurality of DC components is in a discontinuous DC format. Also, the method can include, when two or more of the plurality of DC components is in the discontinuous DC format, determining a synchronization pattern for supplying power to the two or more of the plurality of DC components. Further, the method can include a DC power source of the climate control system directing power to the two or more of the plurality of DC components in the discontinuous DC format based on the synchronization pattern.