With the rapid growth of electric vehicle adoption, it’s increasingly common for multiple wallboxes to be installed under a single meter in parking lots. Often, these wallboxes are not the only devices drawing power from the line, leading to the need for overdimensioning the meter’s power limit to avoid overload disconnections. An innovative approach to avoiding overdimensioning issues is through the Dynamic Power Sharing feature, which adjusts the power allocation to multiple charging stations in real-time based on available power and external electrical loads. This advanced method offers significant improvements over traditional static power sharing systems.

Static vs. Dynamic Power Sharing

In a static power sharing system, a group of wallboxes shares a predetermined amount of power, which remains constant over time. Each wallbox is designated as master or slave. The master wallbox communicates with the slave wallboxes to distribute the available power. However, this distribution does not change in response to variations in power availability or demand, leading to inefficiencies and potential overloads.

Dynamic Power Sharing, on the other hand, introduces a real-time element into the power distribution process. This approach allows the master wallbox to continuously monitor and adjust the power allocated to each slave wallbox based on the current availability of electrical power and the demands of other domestic or external electrical loads. This ensures that the charging process is efficient and flexible, adapting to changes in power availability and usage.

How Daze’s Dynamic Power Sharing Works

Daze’s Dynamic Power Sharing system operates through a master-configured wallbox that continuously measures instantaneous consumption at the meter via the Power Manager, and accordingly regulates the overall consumption of the chargers, distributing it evenly among those actually charging. Here’s a detailed explanation:

  1. Master and Slave Configuration: Similar to the static system, a Dynamic Power Sharing network involves a master wallbox and multiple slave wallboxes. The master wallbox is responsible for measuring and calculating the residual power at the meter, communication, and power distribution.
  2. Communication Network: All chargers in the network are connected via Ethernet cables or Wi-Fi to a router, which assigns an IP address to each Dazebox using the TCP/IP protocol. This support network can also provide the internet connection.
  3. Power Manager Function: To measure the residual availability at the meter, the master Dazebox is connected to a Power Manager device, allowing it to measure the total current supplied to the system, including other loads.
  4. Real-Time Power Allocation: Based on data from the Power Manager, the master Dazebox calculates the available residual power and dynamically allocates it to each charging Dazebox. This allocation can change in real-time, responding to fluctuations in domestic power usage, ensuring that the total power consumption does not exceed the meter’s capacity.
  5. Single-Phase and Three-Phase Systems: The Dynamic Power Sharing system can be implemented in both single-phase and three-phase electrical configurations. In a three-phase system, the main difference is the use of a three-phase Power Manager with three current transformers (one for each phase) and additional cables (L1, L2, L3, N, PE).

Advantages of Dynamic Power Sharing

The Dynamic Power Sharing system offers several key advantages over static power sharing:

  • Single Meter: This feature eliminates the need for a dedicated meter for car charging, reducing management costs with the energy provider.
  • Reduced Installation Costs: Dynamic Power Sharing significantly lowers the peak power of the overall system, impacting the sizing of cables and protections, drastically reducing installation costs.
  • Flexibility: The system can adapt to changes in power availability and demand, ensuring optimal performance under varying conditions.
  • Scalability: This system can be easily expanded to accommodate more wallboxes or increased power demands, making it a future-proof solution for the growing adoption of EVs.

What Makes Daze’s Dynamic Power Sharing Unique

Unlike most systems on the market, Daze’s power sharing system does not require an external “master” device. The master function is handled by a regular charger configured as the master of the network, reducing installation costs and ensuring optimal operation without compatibility issues.

Moreover, Daze’s master wallbox can operate in systems with photovoltaic production without needing dedicated meters for the latter or establishing a data connection with the inverter.

At Daze, we constantly work to offer our users simple-to-use and technologically advanced charging solutions. Don’t miss the opportunity to revolutionize energy management for charging with Dynamic Power Sharing. Visit our website or contact us for more information and to explore all available solutions.