Medium voltage frequency converters
Medium voltage frequency converters are essential devices used for controlling motors in various industrial applications. These converters play a vital role in optimizing motor performance by allowing precise control of motor speed and torque. A medium voltage frequency converter, as the name suggests, operates at medium voltage levels, typically ranging from 1kV to 15kV. It converts the incoming power supply, which is usually at a fixed frequency, into an adjustable frequency output. This adjustable frequency allows for precise control of motor speed and facilitates efficient operation across a wide range of loads. One of the key advantages of using a medium voltage frequency converter is its ability to provide soft starting and stopping of motors. Traditional direct-on-line motor starters can cause high inrush currents and mechanical stresses during motor startup, leading to excessive wear and tear. In contrast, frequency converters gradually ramp up the motor speed, reducing inrush currents and minimizing mechanical stress. This soft starting feature extends the motor's lifespan and reduces maintenance costs. Another significant benefit of medium voltage frequency converters is their ability to provide precise speed control. In many industrial processes, such as pumps, fans, and compressors, it is crucial to maintain a specific speed to achieve optimal performance. With a frequency converter, operators can easily adjust the motor's speed to match the requirements of the process, resulting in energy savings and improved process control. Medium voltage frequency converters also enable energy-efficient operation by reducing power consumption during partial loads. By adjusting the motor speed to match the required load, frequency converters prevent motors from running at full speed when not necessary. This feature helps in reducing energy waste, leading to substantial cost savings and environmental benefits. Furthermore, medium voltage frequency converters offer advanced protection features for motors. These converters monitor various parameters such as current, voltage, and temperature, and provide overload and short-circuit protection. They can also detect motor faults and automatically shut down the motor to prevent further damage. These protection features enhance the reliability and safety of motor-driven systems. In conclusion, medium voltage frequency converters are indispensable tools for motor control in industrial applications. Their ability to provide soft starting, precise speed control, energy-efficient operation, and advanced motor protection make them essential for optimizing motor performance. As industries strive for increased efficiency and sustainability, the use of medium voltage frequency converters will continue to grow, contributing to a greener and more reliable future.
Medium-voltage 3 level inverter
Technology leadership
l Three-level topology structure, IGBT mid-point clamping technology;
l Level PWM rectification technology, grid input current harmonics meet grid requirements;
l Suitable for driving all kinds of permanent magnet synchronous motors and AC asynchronous motors;
l It can realize open-loop vector and closed-loop vector synchronous motor control;
l It can realize the field weakening and speed expansion control of synchronous motor;
l It can realize open-loop and closed-loop vector control of AC asynchronous motor;
l Multi-machine master-slave synchronous control can be realized;
l 1Hz can achieve 150% torque for 1 minute.
Four -quadrant Integrated Structure design
l Four -quadrant inverter with controllable rectification plus integrated inverter structure design:
l Modular structure design, small volume, can reduce/reduce explosion -proof boxes, reduce the cost of explosion -proof boxes for customers; ·
l Coal equipment integration integrated design saves space;
l The interface is clear, the operation is intuitive and simple;
l Professional rigorous vibration test, superior seismic performance
l Professional driver technology guarantees core performance
l Multiple protection for guarantee working reliability.
Thermal design technology
l Use the world's leading thermal design software to ensure heat dissipation.
l Test temperature of the whole series with heat pipe radiator
l The two types of cooling and cold water and cold water can be customized
Easy Maintenance
l Modular structure design, the movement module can be directly packed on the thermal pipe, without the need to disassemble and assemble the secondary time.
l Avoid factors such as the quality of the disassembly process, which greatly improves the reliability of the product;
l High power density, compact volume;
l Improve assembly efficiency and reduce production costs
l The whole machine structure modular live page design concept, IGBT can be easy to disassemble, greatly improves the maintenance of the product, saves maintenance time
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Application of
Belt machine, scraper, permanent magnet roller, twisted, promoter, oil field hoe machine, submarine pump, various pumps and various explosion -proof or non -explosive frequency frequency frequency applications.
What else can ZK Technology do?
1. Tailor -made
Software, hardware, and structures can be customized according to customer requirements. They can not change the explosion -proof box. Customized movements in the customer's explosion -proof box do not need to renew explosion -proof certification.
2. Fast response time
After receiving the needs of customers, the movement or inverter scheme within one week, delivery at 4-6 weeks
3. Autonomous technology
According to customer requirements, adding special software functions can provide hardware circuit design according to customer site requirements, and provide custom -made function circuit boards for free.
