Smart Building Automatic Control – A New Standard for Energy Saving, invert+

As the energy costs of buildings continue to rise, efficient energy use has become even more important. Particularly for large buildings or public institutions, various energy management solutions are being adopted to address these issues. One solution gaining attention in this area is **invert+**. Positioned as a key element for smart building automatic control and energy management systems, invert+ is an inverter-based energy-saving system that maximizes efficiency even in low-load conditions compared to existing products, minimizing losses as a next-generation solution. In this article, we will explore the principles and advantages of invert+ which is emerging as a core component of smart building automatic control.

Where Is Smart Building Energy Management Going Wrong?

Engineers responsible for smart building management face many challenges. Especially, motor management and energy efficiency issues become more complex with larger buildings, increasing the burden of management. Traditional inverters, or VFD/VSD (Variable Frequency or Speed Driver), only control voltage output according to frequency, failing to prevent losses due to voltage. With general inverters, it is impossible to avoid efficiency decline due to load changes, leading to excessive energy use. Additionally, the fact that motors are designed to operate properly only within a 60-100% load range causes visible efficiency degradation issues at loads below 50%. To enhance overall energy efficiency, a system that can proactively address these potential problems is necessary. In response to this need, invert+ has been developed, tackling the problem with a distinct approach compared to traditional inverters.

Let’s delve deeper into the changes that invert+ is bringing to smart building automatic control systems, and how it maximizes energy-saving effects and operational efficiency. The innovative functions of invert+ that we will introduce now open a new chapter in building management.

Do You Know Why Energy Is Being Wasted While Operating?

While facilities in large buildings are running 24/7, managers might easily believe they are achieving satisfactory operations simply because the system is “operating.” However, significant energy loss occurs during periods with low load, like at night or during non-business hours when the average load rate is only 12%. Many motors and facilities still operate inefficiently during these times, contributing significantly to overall operational costs.

This issue stems from the structural limitations of existing inverter systems. The typical VFD/VSD method controls voltage and frequency simultaneously, failing to respond sensitively to load changes and causing voltage loss. The method producing fixed and dynamic losses sharply decreases efficiency, especially when actual load is low. Despite the active adoption of the latest technology, fundamental solutions to these losses are still lacking in actual facility operation sites.

Thus, merely focusing on reducing power consumption cannot resolve these inefficiency problems. There is a need for precise control technology that can thoroughly analyze the operating conditions of the whole system and achieve maximum efficiency even under partial load conditions. The system designed to meet this need is invert+, and its technical distinctiveness is becoming a key challenge for smart building energy management.

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The Energy Control Innovation Brought by Invert+ in Smart Buildings

To achieve energy saving in smart buildings, precise operation matching the actual power consumption structure is essential beyond simple control. Here, invert+ overcomes the limitations of existing inverter control by applying VFVD technology (Variable Frequency and Voltage Driver), allowing for finer adjustment of motor operating conditions. Unlike traditional VFD, which proportionally adjusts voltage with frequency changes without considering losses, invert+ independently controls frequency and voltage, reducing unnecessary voltage losses. This allows for high-efficiency operation even in partial load areas, achieving up to a 28% efficiency improvement compared to existing inverters based on actual measured data at an average load rate of 12%.