Power Reception Control Device for Early New Element Startup

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Solution Overview

Problem

Existing power reception control methods fail to allow a new power reception element to start electric power reception when the difference between the current total transmitted electric power and the maximum total transmitted electric power reaches zero, resulting in no allowable electric power for newly-added power-consuming elements.

Innovation Solution

A power reception control method that calculates element differential electric power by subtracting the current total transmitted electric power from the maximum value and multiplying it by the power reception element's priority, then updates the element-receiving electric power by adding this differential power and subtracting an electric power correction value to enable early power reception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the current value of total transmitted electric power is controlled to converge in the reference value (maximum value), then the total consumed electric power is constrained, but no allowable electric power is available for newly-added power reception elements

Engineering Contradiction:

Improvepower reception control stabilityVSAvoidnew element power reception capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The control device calculates and transmits the differential electric power (difference between maximum and current total transmitted power) in advance to power reception elements. This preliminary action ensures that when new elements join the system, they immediately have access to available power information and can start power reception without waiting for system reconfiguration or power allocation delays.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the current total transmitted electric power and compares it with the maximum value, then feeds back the differential power information to power reception elements. This feedback mechanism dynamically adjusts available power information, ensuring new elements can access power allocation based on real-time system state while maintaining overall power constraints.

Inventive Principle:

Principle #23Feedback

2Loss of energy

If the differential electric power is set to zero when current power equals maximum power, then power consumption is constrained, but new elements cannot start power reception

Engineering Contradiction:

Improvetotal power consumption controlVSAvoidnew element power reception startup

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

Instead of completely stopping power allocation when current power reaches maximum (differential power = 0), the system allows new elements to start power reception with the calculated differential power. This partial action approach enables new elements to begin operation while the system continues to manage overall power consumption within acceptable limits, rather than completely blocking new element access.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If power allocation is centralized control-based, then total power is constrained effectively, but new elements face delays in power reception startup

Engineering Contradiction:

Improvetotal power constraint controlVSAvoidpower reception startup time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The centralized power control system is segmented by distributing the differential power calculation and allocation decisions to individual power reception elements. Each element independently calculates its power reception amount based on received differential power information, eliminating the time delay associated with centralized reconfiguration when new elements join, while still maintaining overall power constraints through the differential power mechanism.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11390186B2Power reception control method for power reception element and power reception control device

Publication Date: 2022.07.19 NISSAN MOTOR CO LTD

AI summary

A power reception control method for a power reception element controls element-receiving electric power received by the power reception element in an electric power system for supplying electric energy to a load group including plural power reception elements via an electric power supply base point. The power reception control method acquires differential electric power by subtracting a current value of total transmitted electric power from a maximum value of the total transmitted electric power that is an available amount to be supplied to the entire load group via the electric power supply base point, multiplies the differential electric power by a degree of priority of the power reception element to calculate element differential electric power, adds the element differential electric power to the previous element-receiving electric power, and subtracts an electric power correction value based on the element-receiving electric power so as to update the element-receiving electric power.