Key Concepts
The Open Charge Point protocol (OCPP)
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The OCPP is an open-source communication standard for EV charging stations and network software companies.
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Established in 2009 by the Open Charge Alliance, OCPP is designed to be a free, open- source, and easy to implement protocol that ensures all participants are speaking the same language.
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Any EV charging station that is OCPP-compliant can be configured to run any similarly OCPP-compliant software
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It is the global benchmark for interoperability throughout the EV charging industry
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Why it is important: OCPP-compliant hardware prevents price gouging by service providers who sell proprietary equipment - equipment that cannot be serviced by other service/billing providers, ensuring fair and transparent practices.
Why a Hardware Agnostic Solution is the best approach.
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This approach does not tie the building/site to any particular solution (brand/type of hardware and software).
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Benefits:
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It allows any smart charger to be integrated onto the building’s existing infrastructure, providing residents with more options or a ‘BYO-charger’ approach, whilst remaining optimally and transparently managed.
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It allows building management to switch service providers without having to replace the already installed hardware
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It avoids unnecessary re-investment.
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The site remains future-proof, avoiding potential compatibility issues with newer hardware that may not be supported by older systems - in other words improving site flexibility and scalability.
Dynamic Load Balancing
The Building may:
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Not have enough excess power to allow all chargers to run at full capacity at any given point of time, and/or
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May want to throttle the chargers so that the switchboard capacity is not exceeded.
​Even though chargers may be OCPP compliant, the Load Balancing or Energy Management System provided by the manufacturer may be:
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Proprietary, whereby requiring all chargers to be of the same brand, hence locking-in the site to a specific brand which reduces immediate and long-term flexibility, and increases supplier risk;
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Only capable of working on limited number of chargers, for example 30 charging points.
Solution: KarChargers provides a cloud-based hardware agnostic solution, allowing scalability (theoretically allowing unlimited number of chargers) and different brand of smart-chargers to be integrated.
How is this done: The power consumed by each charger is monitored online, allowing the charging rate to scale up or down based on available capacity.
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