Real-Time Charging Network Voltage Determination
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Solution Overview
Problem
Current methods for managing and visualizing electrical charging networks are not suitable for real-time supervision due to their complexity, particularly in calculating voltage drops and current levels, which is essential for determining available charging capacities in electric vehicle charging infrastructure.
Innovation Solution
A method that updates the voltage and power availability in an electrical charging network by iteratively determining a modified inverted loop impedance matrix based on a reference inverted loop impedance matrix and impedance differences, reducing computational complexity and enabling real-time visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current methods based on matrix inversion are used to calculate voltage drops and current levels, then measurement precision is improved, but device complexity increases significantly
Solution Approach 1:
The patent pre-calculates and stores the inverse of the loop impedance matrix at initialization. During real-time operation, only matrix-vector multiplication is performed using the pre-computed inverse matrix, avoiding repeated complex matrix inversions and enabling fast real-time supervision
Solution Approach 2:
The patent creates a simplified computational model that copies the essential electrical characteristics of the charging network into a mathematical representation (loop impedance matrix). This model can be efficiently processed to determine voltages and powers without simulating the entire physical network in real-time
2Productivity
If real-time supervision is implemented to determine available charging capacities, then productivity is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary initialization to establish the loop impedance matrix and its inverse before real-time operation. This pre-computation enables subsequent real-time calculations to proceed efficiently using simple matrix-vector multiplications rather than full matrix inversions
Solution Approach 2:
The patent implements real-time feedback by continuously monitoring voltage drops and current levels through the mathematical model. The system uses measured values to update the state of the charging network and determine available capacities at each terminal, providing dynamic supervision
Data Source
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AI summary
The invention relates to a method of determining voltages and/or powers available in a recharging network comprising a generator and at least one recharging terminal i corresponding, at a first instant t1 to a reference impedance zii . Said method of determining implements, at an instant t2 , at least one iteration of the following steps: - estimation (11) of a change of impedance into a modified impedance z'ii , - updating (12) of a voltage of the recharging terminal i by determining a modified inverted loop impedance matrix, Formula (I), dependent on a reference inverted loop impedance matrix, Formula (II), and a difference between said modified impedance z'ii and reference impedance zii , delivering a voltage U'i , - verification/updating (13) of a power available at the recharging terminal i as a function of the voltage U'i , of a maximum power of the generator, and/or of a threshold voltage, delivering in the event of updating a power available Pdisp_i .