Dear clients, I am writing to extend a warm invitation on behalf of V&T to attend the 139th Canton Fair and visit our booth from April 15th to 19th. Details Date: April 15-19, 2026 Booth No.: Hall 8.1, G44-45 Exhibition Address: 382 Yuejiang Middle Road, Haizhu District, Guangzhou, Guangdong, P.R. China At our booth, you will have the chance to experience our latest products and services firsthand. We look forward to your visit and the opportunity to explore potential business collaborations. If you require any further information or arrangements, we would be more than happy to assist you. Please reserve some time in your schedule to visit our booth. We eagerly anticipate meeting you at the Canton Fair. Thanks for your attention and support. Best regards, Shenzhen V&T Technologies Co., Ltd.

As a typical positive displacement fan, the Roots blower is widely used in industrial fields due to its compact structure and non-internal compression characteristics. However, high energy consumption and startup shocks under traditional operating conditions have long plagued users. Recently, V&T successfully implemented a V9 series variable frequency drive (VFD) retrofit solution for an enterprise in Anshan, delivering a "standard answer" across three dimensions: energy efficiency, equipment lifespan, and intelligent operation and maintenance (O&M). Background: Addressing Traditional Pain Points Roots blowers rely on two three-lobe impellers rotating synchronously in opposite directions to transport gas. The air volume is directly proportional to the speed, and there is no internal compression process. In actual production, most enterprises still use damper regulation or start/stop control to match air demand. This results in significant energy waste. Furthermore, the high current impact generated by direct motor starting accelerates mechanical wear, shortening the lifespan of key components like bearings and oil seals, thereby driving up maintenance costs. The enterprise in Anshan had long struggled with these issues and decided to seek a VFD retrofit solution. After comparing multiple options, the V&T V9 series was selected as the final choice due to its dedicated algorithms for positive displacement loads and reliable quality. Three Major Advantages: V&T V9 Provides the "Standard Answer" 1. Precise Energy Efficiency Control: Supply on Demand, No Waste The V&T V9 VFD directly drives the Roots blower motor. Utilizing the characteristic that "air volume is proportional to speed," it dynamically adjusts the speed based on actual air consumption to achieve precise, on-demand supply. This completely replaces the traditional, inefficient damper regulation method, eliminating throttling losses. After the retrofit, the enterprise saw a reduction in fan power consumption of over 20%, with a significant improvement in overall system energy efficiency. 2. Soft Start/Stop: Significantly Extended Equipment Lifespan Addressing the mechanical shock that easily occurs during the start/stop moments of the three-lobe impeller structure, the V9 VFD features built-in soft start and soft stop functions. This allows the motor current to rise and fall smoothly, completely eliminating impact currents on the power grid. On-site operation data shows that after the retrofit, fan vibration values dropped by more than 30%, and mechanical wear was noticeably reduced. The service life of bearings and fluororubber oil seals is expected to extend by more than 100%, significantly reducing the frequency of spare parts replacement. 3. Fully Automated O&M: Worry-Free Production Line Stability The V9 VFD integrates multiple protection functions—including overcurrent, overvoltage, phase loss, and overheat protection—to monitor the motor and fan status in rea...

Metal wire drawing is a critical stage in wire production. The straight-line wire drawing machine consists of multiple drawing heads, cold-drawing the wire to the target specification in a single pass through progressive drawing. It features high efficiency and strong continuity, making it widely used in high-precision wire processing fields. Core Challenges During high-speed continuous production, the VFD must simultaneously meet several stringent requirements: outputting high torque with stable operation during startup and low-frequency stages; controllable swing amplitude of the tension swing arm during wire threading; fast and stable response to target tension; and possessing system functions such as arbitrary die skipping, meter-stop, weight-stop, and die wear estimation to ensure the coordinated operation of the entire line. Solution The system uses a PLC as the control core to perform all logic operations and data processing, achieving efficient communication with the VFD. The main VFD quickly responds to PLC commands to ensure stable and uniform wire drawing tension; the take-up VFD cooperates with a constant tension control algorithm to evenly wind the finished wire onto the spool or 'elephant nose' take-up device, realizing fully automated closed-loop control throughout the process. Technical Advantages • High-precision Diameter Calculation Built-in specialized diameter calculation function tracks the real-time change of the winding radius, effectively preventing wire breakage risks and ensuring long-term stable and reliable operation of the equipment. • Superior Torque Control Outputs high torque in the low-frequency range with rapid response, thoroughly solving the problem of difficult startup under load, and adapting to frequent start-stop operations under heavy load conditions. • Leading Constant Tension Control Algorithm Breaking through traditional tension control schemes, the tension fluctuation during the winding process is extremely small. The operational results have been highly recognized by customers, significantly improving finished product quality and equipment competitiveness.

As a core component of the "three-electric" system in new energy vehicles, the motor controller undertakes critical responsibilities for overall vehicle energy management and power output. It serves not only as the electrical energy conversion hub between the battery and the drive motor but also determines the vehicle's dynamic performance, energy efficiency, and operational reliability. In the recently completed South Korean electric bus project, V&T's electric vehicle motor controller successfully fulfilled all commissioning tasks with outstanding performance, enabling the client to efficiently pass all whole-vehicle test items. This achievement once again confirms its stability and reliability under demanding operating conditions. Precise Control Unleashing Exceptional Climbing Performance South Korea's terrain features numerous mountains, frequent curves, and drastic altitude changes, imposing extremely high demands on the power systems of electric buses. Throughout the testing process, vehicles equipped with V&T motor controllers demonstrated exceptional performance. They operated smoothly under complex conditions involving continuous climbs, multiple curves, and high altitudes, effortlessly reaching the summit of a mountain approximately 1,200 meters above sea level. This fully validates their suitability for high-altitude mountainous environments. The control precision of the motor controller directly impacts acceleration smoothness and climbing capability. Through precise regulation of torque and speed, V&T products ensure a stable and fluid driving experience even under complex road conditions. Efficient Energy Recovery Optimizing Range Performance Under braking or coasting conditions, the V&T motor controller can rapidly switch the motor to generator mode, efficiently recovering energy and recharging the battery. This further enhances the vehicle's overall range, providing superior energy consumption performance for electric buses operating on long slopes and winding roads. Multiple Safety Mechanisms Ensuring Stable High-Voltage System Operation Safety is paramount for the operation of new energy commercial vehicles. The V&T motor controller incorporates multiple real-time monitoring mechanisms, including over-voltage, under-voltage, and over-temperature protection, providing full-time safeguarding for the high-voltage system. During the testing phase of this South Korean project, the product maintained stable operation without any anomalies or failures, fully demonstrating its high reliability under rigorous conditions. Collaborative Control Enhancing Overall Vehicle Intelligence By working in synergy with the Vehicle Control Unit (VCU) and the Battery Management System (BMS), the V&T motor controller supports advanced functions such as cruise control and optimized energy distribution, providing solid support for overall vehicle intelligence. As a core link in the powertrain of new energy vehicles, the performan...

Industry Challenge Traditional blowers operate at fixed speeds with mechanical transmission, leading to high energy consumption, limited speed control, and complex maintenance—critical issues in wastewater, chemical, and metallurgical industries. The Solution Our high-performance VFD serves as the intelligent core of permanent magnet air suspension centrifugal blowers, enabling: Precision Speed Control IGBT modules provide infinite speed adjustment from 10,000-100,000 rpm, dynamically matching airflow to process demands while high carrier frequency reduces electromagnetic noise. Superior Energy Efficiency 96%+ VFD control efficiency paired with 95-98% permanent magnet motor efficiency delivers 30-50% energy savings over traditional blowers. Direct drive eliminates gearbox losses (99% transmission efficiency). Intelligent Process Control Built-in PID algorithm automatically optimizes airflow and pressure for applications like DO control in wastewater. Modbus RTU enables remote monitoring of speed, temperature, and power. Comprehensive Protection KEB function prevents bearing damage during power outages Surge detection algorithm avoids unstable operation Temperature monitoring (Class H, 180°C withstand) with automatic derating Clean & Compact Design Oil-free operation meets GMP standards for food/pharma. Integrated VFD cabinet reduces footprint by 50%. Anti-corrosion coatings withstand up to 200°C and harsh environments. Customer Benefits ✓ 30-40% energy reduction in wastewater applications ✓ 10+ year service life with no mechanical wear ✓ 50% less maintenance through soft-start and predictive protection ✓ Full compliance with environmental and cleanroom standards Applications Wastewater: Precision aeration control saves 30-50% energy while improving treatment quality Chemical/Metallurgy: Handles corrosive gases and high temperatures reliably Food/Pharma: Oil-free, low-harmonic operation meets GMP requirements Transform your blower system with intelligent VFD control—contact us for a customized solution.