In precision assembly and heavy lifting operations, traditional 50/60 Hz electric hoists often suffer from harsh startup shocks, noticeable swinging, poor synchronization, and rapid brake wear. A manufacturing company addressed these issues by upgrading their hoists with variable frequency drives (VFDs), significantly improving performance and reliability. · The VFD allows smooth control of motor acceleration and deceleration. This eliminates the sudden jolt at startup and the abrupt stop during braking. As a result, mechanical shock drops by about 70%, which greatly extends the life of chains and structural parts. · Because the VFD adjusts power output based on load, multiple hoist points can move in sync. After the upgrade, the height difference between two lifting points stays within ±3 mm. The load remains level automatically after positioning, boosting work efficiency by roughly 25%. · Braking also becomes far more dependable. The system holds the load steady at zero speed before engaging the mechanical brake. This cuts brake pad wear by over 90%. Even if power fails, the motor maintains holding torque to prevent the hook from slipping—making the whole operation safer. Overall, variable frequency technology transforms a basic electric hoist from a simple lifting tool into a precise motion system. It directly tackles three key problems: mechanical shock, inaccurate positioning, and over-reliance on mechanical brakes. For demanding lifting tasks, this upgrade offers a reliable and cost-effective solution.

In the field of industrial automation, variable frequency drives (VFDs), as core equipment for motor control, directly impact the efficiency and stability of production lines. Leveraging its profound technical expertise, V&T has launched the VTS31 series general-purpose VFD—a compact drive offering exceptional compatibility and a rich set of features, delivering an innovative solution for variable-torque load applications such as fans and pumps. The VTS31 series is a compact general-purpose variable frequency drive developed by V&T. It supports both synchronous and asynchronous motor control and comes standard with an LCD keypad. Featuring simple operation, small size, light weight, and comprehensive protection functions, it is ideally suited for variable-torque load applications like fans and pumps. The series covers motor power ratings from 1.5 kW to 500 kW. Key Features: Compact design Supports V/F control, asynchronous current-vector control, asynchronous voltage-vector control, and open-loop synchronous motor control Optimized for fan and pump applications Standard communication protocols: Modbus RTU and CANopen Multiple keypad options: standard Chinese/English LCD keypad; optional LED keypad For models rated up to 650 A: multiple drives can share a common DC bus Cabinet-type units (725 A and above) can be customized to meet specific customer requirements and on-site installation needs regarding input/output wiring configurations

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.

The V&T asynchronous servo system has successfully enabled Bock (Dongguan) to complete an energy-saving retrofit of its die casting machines. Following project submission, Germany-based BOCK Group conducted a rigorous nine-month validation process before proceeding with a comprehensive retrofit of its 800T–1000T die casting machines. After an on-site inspection, German engineers were highly impressed by the energy-saving performance and even made a special visit to V&T’s booth at an industry exhibition to commend the technology. In the table, the first row shows pre-retrofit data: 0.7058 kWh per mold.The second row shows post-retrofit data in energy-saving mode: 0.2511 kWh per mold, saving 0.4547 kWh per mold. Based on 1,000 molds per day, 330 operating days per year, and an average electricity rate of CNY 0.8/kWh, the energy-saving benefits are calculated as follows: After more than two years of real-world operation, the system has demonstrated significant advantages: Compact design – easy to install and maintain Simple operation – no specialized training or secondary commissioning required Outstanding energy savings – delivering a comprehensive electricity reduction of 45% to 60%

On December 19, 2025, the JAC GROUP 2026 Supply Chain Partner Conference, themed “Driving Transformation for Development, Fostering Ecosystem for Mutual Success,” was held in Hefei. As an important supply chain partner, V&T was invited to attend and received the “Collaborative Development Award.” V&T has rich experience and mature solutions in new energy vehicle technologies, covering pure electric, hybrid and hydrogen fuel cell systems. Over the past few years, V&T has maintained a strong cooperative relationship with JAC GROUP, and its R&D team has actively supported JAC’s development, testing and experiments. This award is a high recognition of V&T’s design and R&D capabilities.