EV Charging Station Power Limit Management
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Solution Overview
Problem
Charging stations for electric vehicles often face limitations in providing maximum charging power due to design constraints in the electrical supply network, leading to reduced charging speeds during peak demand, and the use of intermediate storage solutions is costly and inefficient.
Innovation Solution
The charging station utilizes network topology reallocation and regenerative feed-in means, such as wind turbines and photovoltaic installations, to increase receiving power above initial draw limitations without exceeding transmission power limits, allowing for enhanced charging capacity without the need for expensive storage solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the charging station increases receiving power above the initial draw limitation, then the charging power is improved, but the transmission power limit in the network branch may be exceeded
Solution Approach 1:
The charging station performs preliminary checks to determine whether increasing receiving power above the initial draw limitation would exceed transmission power limits in any network branch. This advance verification allows the system to safely increase power intake when network conditions permit, while preventing violations when they would occur.
Solution Approach 2:
The system continuously monitors network conditions and transmission power levels, using this feedback to dynamically adjust the receiving power. By checking whether increased power intake would exceed transmission limits and adjusting accordingly, the system maintains reliability while maximizing charging power.
2Power
If intermediate storage means are provided to boost charging power during peaks, then the charging power is improved, but the cost and maintenance requirements increase
Solution Approach 1:
The patent extracts the storage function from the charging station itself and places it in the electrical supply network by utilizing existing energy storage systems at the network level. This allows the charging station to access boosted power during peaks without needing to install and maintain its own intermediate storage means.
Solution Approach 2:
The electrical supply network acts as an intermediary between the grid and the charging station, providing power boosting capabilities through network-level storage systems. This mediator approach allows individual charging stations to benefit from storage capabilities without bearing the cost or complexity of owning their own storage infrastructure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables increased charging power at reduced costs by leveraging existing network topology and renewable energy sources, ensuring efficient power distribution and minimizing the risk of transmission power overload, thus supporting higher demand periods without the need for costly intermediate storage.
Implementation Method 1
a wind turbine 100 comprising a tower 102 and a nacelle 104. Arranged on the nacelle 104 is a rotor 106 having three rotor blades 108
Implementation Method 2
and a photovoltaic installation 226
Data Source
AI summary
The disclosure concerns a method of operating a charging station for charging electric vehicles, wherein the charging station is connected to an electrical supply network at a network connection point, the electrical supply network has at least one distribution network and at least one higher network portion hierarchically above the distribution network, and the network connection point is connected to the distribution network, wherein the charging station obtains electric power as receiving power from the electrical supply network, the receiving power at the network connection point is limited in its level by an initial draw limitation to an initial power limit to limit a transmission power which is transmitted in at least one network branch of the electrical supply network, and if required the receiving power is increased above the initial draw limitation if the limitation in respect of the transmission power in the at least one network branch is ensured.