EV Charging Current Controller for Dynamic Load Allocation
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Solution Overview
Problem
Existing systems fail to allocate electric power to vehicles in a way that maximizes the utilization of the distribution infrastructure.
Innovation Solution
A controller that dynamically distributes electric current through a stepwise procedure, reallocating current based on vehicle needs and network constraints, ensuring even loading and prioritization of engine heaters and premium clients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric current is allocated to consumer nodes based on maximum demand without dynamic adjustment, then all nodes receive sufficient current to meet peak demand, but current is wasted when nodes require less current than allocated
Solution Approach 1:
The patent implements dynamic current allocation by repeatedly reassessing the requested current amount for each consumer node and adjusting the allotted current accordingly. The controller dynamically modifies current distribution in response to changing demands, transitioning from static maximum-demand-based allocation to adaptive real-time allocation that matches actual node requirements.
Solution Approach 2:
The controller employs feedback mechanisms by repeatedly receiving requested current amounts from consumer nodes, comparing these requests with currently allotted amounts, and adjusting allocations based on the difference. This closed-loop control ensures current is allocated precisely according to actual demand while preventing waste through continuous monitoring and adjustment.
2Loss of energy
If a stepwise current allocation procedure is implemented to dynamically adjust current distribution, then current waste is reduced by matching supply to actual demand, but the complexity of the control system increases
Solution Approach 1:
The patent segments the current allocation process into discrete steps: receiving requested amounts from individual consumer nodes, comparing each request with current allocations, determining differences, and adjusting allocations node-by-node. This stepwise segmented approach manages control complexity by breaking down the overall allocation task into manageable individual node assessments.
Solution Approach 2:
The controller implements partial action by adjusting current allocation only for those consumer nodes where the requested amount differs from the allotted amount, rather than re-evaluating and potentially adjusting all nodes in every cycle. This selective adjustment reduces computational overhead while maintaining effective dynamic control.
Data Source
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AI summary
Electric current is dynamically distributed to vehicles, which each is connected to a respective consumer node (C11, C12, C13, C21) in a distribution network (150) receiving a total amount of incoming electric current (IS) via a root interface (R). Current is allotted to each node in the distribution network (150) according to a stepwise procedure, wherein amounts of current is gradually allotted to the nodes until all of the total amount of electric current (IS) has been allotted, or at least one threshold criterion is fulfilled. A respective amount of current requested by each consumer node (C11, C12, C13, C21) is repeatedly reassessed, and if for a particular consumer node, a requested amount of current is lower than an amount of current allotted to the node, the amount of electric current allotted to the particular consumer node is decreased to the amount of current requested by that node.