Dynamic Load Balancing: A Key to Efficient Home EV Charging

As the world embraces electric mobility, more people are discovering the convenience and cost-effectiveness of charging their electric vehicles (EVs) at home. In the UK, over 65 percent of EV drivers prefer home charging due to its affordability and convenience. However, managing the increased power demand from EV charging can be challenging for your home’s electrical circuit. This is where smart EV charging solutions, like dynamic load balancing, come into play. In this article, we’ll explore dynamic load balancing in detail and its role in optimizing home EV charging.

Avoiding Power Overload

To understand the importance of dynamic load balancing in EV charging, it’s crucial to grasp the problem it addresses. Electric circuits in homes have limited capacity and can overload if too much power is drawn. To prevent overloads, households are equipped with circuit breakers that cut power if energy usage exceeds safe levels. You might have experienced this when multiple high-energy appliances, like ovens, dishwashers, and washing machines, run simultaneously. While power can be restored by reducing the load, doing so can be inconvenient.

Dynamic load balancing steps in to solve this problem. By continuously monitoring power loads on your circuit, it intelligently allocates available capacity to appliances that need it most. This ensures that appliances can operate simultaneously without overloading the circuit, minimizing disruptions.

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How Much Power Do You Need to Charge an Electric Car?

EVs are energy-intensive, and a dedicated home charging station can deliver between 7.4 kW and 22 kW of power, significantly more than typical household appliances. For instance, a dishwasher uses between 1.05 kW and 1.5 kW.

On average, an EV consumes about 0.316 kWh per mile. Considering an average daily drive of 19 miles in the UK, an electric car consumes 6 kWh of electricity daily. Over a month, this adds approximately 180 kWh to your household electricity consumption.

It’s important to note that these numbers can vary based on individual situations and driving habits.

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Do You Need to Upgrade Your Power Supply?

Installing an EV charger can add a substantial load to your home’s electrical circuit. If your existing power connection isn’t equipped to handle this additional load, you might need to upgrade to a higher-capacity power connection. However, this can be expensive and require professional installation and permits.

Dynamic load balancing offers a cost-effective alternative. By monitoring the loads on your circuit, it adjusts the power drawn by your EV to ensure it never exceeds a safe maximum, eliminating the need for an expensive power supply upgrade.

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How Does Dynamic Load Balancing Work?

Dynamic load balancing is a feature that constantly monitors changes in energy usage on your circuit and automatically allocates available capacity to different appliances. It balances energy consumption and adjusts the charging output to your EV in response to changes in electricity load.

For example, if your washing machine, tumble dryer, and EV are connected simultaneously, dynamic load balancing may reduce or pause the EV’s charging process to free up capacity for the other appliances. Once those appliances are turned off, the charger resumes or increases the EV’s charging speed.

This feature also applies when you have multiple EVs charging on the same electrical circuit. Dynamic load balancing automatically distributes the available energy between the vehicles or prioritizes one based on your preferences.

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Diagram of Dynamic Load Balance

Benefits of Dynamic Load Balancing

  1. Prevent Overloading: Dynamic load balancing ensures your EV charger never draws more power than your electrical circuit can handle, preventing circuit breakers from tripping and inconvenient disruptions.
  2. No Need for Meter Upgrades: You can continue using your existing power connection, saving costs on installing a new meter and a more powerful circuit.
  3. Responsive Charging Speed: The charger adjusts its charging speed based on real-time energy use, ensuring optimal charging efficiency.
  4. Charging Flexibility: You can charge your EV without worrying about overloading your home, even during peak hours. If you have multiple EVs, you can prioritize one for faster charging.
  5. Electricity Management: A charger with dynamic load balancing can help monitor your home’s power usage, allowing you to track electricity consumption and adjust the EV charging current according to your preferences.

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Dynamic load balancing is a valuable feature for modern EV chargers, offering convenience, cost savings, and peace of mind to EV owners. Whether you’re dealing with an older electrical system or not, dynamic load balancing ensures efficient and safe home EV charging.

Miles Energy provides several wallbox ev chargers with dynamic load balance functions with smart meters to help your customers charge their EVs safely at home.  Please click below picture to know more about the details of the product.

Wallbox ev chargerE31 Wallbox case BUL lIST Wallbox ev charger

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