Industry Challenges
In traditional constant tension control systems for aluminum strip slitting machines, the unwinding motor operates as a generator. This produces a large amount of regenerative energy. Conventional solutions typically use external braking resistors to dissipate this electrical energy. This approach leads to energy waste, higher costs, and reduced system stability.

Innovative Solution
V&T offers an optimized control solution based on its specialized tension control inverters, the V6-T-T8 series. This solution features an innovative common DC bus design.

• Winding Section: Two V6-T-T8 inverters are used.

• Unwinding Section: One V6-T-T8 inverter is used.

• Traction Section: One general-purpose V5-H series inverter is used.

Key Advantages

• High Energy Efficiency: During unwinding, the motors generate regenerative power. This power is directly used by the winding and traction motors through the common DC bus. This internal energy recycling greatly improves overall energy savings.

• Precise Control: The system uses advanced torque control technology. It ensures stable tension, resulting in neater strip edges and higher product quality.

• Cost Reduction: The system eliminates the need for braking units and resistors. This lowers both the initial investment and ongoing maintenance costs.

• Stable Operation: The system structure is simplified, and voltage fluctuations are minimized. This ensures continuous, high-efficiency production.

• User-Friendly Operation: Key parameters can be set with one click. Different process modes, like single or double-side winding, can be switched quickly. The interface is intuitive and displays real-time operational data clearly.

Application Results
This solution successfully tackles the key challenges of high energy consumption and insufficient control precision in aluminum strip slitting. It achieves effective energy recycling, lowers operating costs, and increases productivity. V&T provides customers with a cost-effective, intelligent, and sustainable drive solution.