Driven by the intelligent wave of Industry 4.0 and the "dual carbon" strategy, the high-speed motor industry is welcoming a historic development opportunity. With the maturity of permanent magnet motor technology, the performance of high-speed permanent magnet motors has become more stable and the cost has dropped to close to that of Roots blowers. Due to the excellent energy-saving effect of high-speed permanent magnet motors, they are experiencing rapid growth and are widely used in chemical, metallurgical, nonferrous, cement, papermaking, thermal power, municipal, aquatic products, automobiles, ships and other industries. Whether it is a high-speed permanent magnet motor such as magnetic levitation or air suspension, a high-speed motor with a speed exceeding 10,000 r/min plays an irreplaceable role in improving system energy efficiency and optimizing dynamic response.
However, technical difficulties that restrict industrial development still exist, such as signal distortion caused by high-frequency electromagnetic interference, speed regulation accuracy limitations brought about by traditional control algorithms (±0.5% vs. required ±0.1%), failure of insulation materials in high-temperature environments, and periodic maintenance costs caused by traditional motor components (annual maintenance costs account for 15-20% of the original value of the equipment). How can we break through these difficulties?
EM750 Engineering Inverter Introduction
Faced with these challenges, as the core hub of energy conversion and motion control, the performance of the inverter directly determines the system energy efficiency, dynamic response (determines ±0.01% speed regulation accuracy) and life cycle cost. As a benchmark automation company in China, Sine Electric has focused on the research and development and testing of inverters for more than 20 years. Aiming at the application and current status of the high-speed motor industry, it has launched the EM750 Engineering Inverter, a leading, stable and efficient inverter in China.
EM750 Advantages
Ultra-high-speed driving capability
• Supports vector control 0-2000Hz, VVF control 0-3000Hz
• Dynamic torque accuracy: ±5% (SVC)/±3% (FVC)
Intelligent control technology
• Adaptive carrier regulation (2-16kHz dynamic adjustment)
• High-speed motor self-learning algorithm (static/dynamic parameter identification)
• Multi-motor compatible drive (permanent magnet/induction/reluctance/asynchronous motor)
Grid adaptability
• Dual-mode voltage ride-through (LVRT/HVRT)
• Standard C3/C2 level EMC filter
Reliability design
• Independent air duct cooling system
• Enhanced circuit board coating
Scalable architecture
• Modular IO interface (supports AI/IO/communication/PG card expansion)
• Industrial-grade isolated 485 communication
• Support Modbus/Profibus/Canopen/EtherCAT/Profinet and other protocols
Application Cases
>>Innovative Application of Air Suspension Blower
Equipment Features
• High-efficiency transmission system: adopts high-speed permanent magnet synchronous motor and three-dimensional flow impeller direct drive technology to achieve zero transmission loss;
• Maintenance-free design: no mechanical contact/friction-free structure, no need for lubricating oil system, maintenance-free throughout the life cycle.
Technical highlights
In this application, the Sine Electric EM750 series engineering drive inverter adopts sensorless vector control, which can accurately control the motor speed in an open loop, bringing great convenience to the speed regulation of the air suspension blower. At the same time, the higher carrier frequency design (16kHz) greatly reduces the motor noise and motor heating; the inverter achieves stable operation and efficient output of the high-speed blower by accurately controlling the motor speed, and the large current balanced filtering can ensure the stable output of the system operation.
>>Innovative application of magnetic levitation blower
Equipment features
Ultra-high-speed levitation blower uses carbon fiber bearings, which have the advantages of high strength, high thermal conductivity, high wear resistance, etc., and can extend the life of the bearings
Technical highlights
In this application, the Sine Electric EM790 series engineering drive inverter adopts advanced vector control algorithms, and the dynamic characteristics change better, such as speed fluctuations, torque fluctuations and other issues are better handled. At the same time, the high carrier frequency design can reduce motor noise and heat generation, and can also effectively suppress electromagnetic noise, meeting the low noise requirements of high-speed motors; the power algorithm optimization under high-frequency operation can more accurately monitor the motor operating parameters.
With its excellent performance and high flexibility, Sine Electric inverters have been widely used in high-speed permanent magnet motor industries such as air suspension and magnetic suspension. Sine Electric inverters have won the trust and praise of many companies for their precise frequency control, efficient energy conversion and stable operating performance. With the continuous advancement of technology and the continuous deepening of application, Sine Electric will surely shine in more fields and lead the industry towards a more efficient and environmentally friendly future.
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Tel : 027-87002560
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Email : [email protected]Cpyright © 2023 Shenzhen Sinee Electric Co.,Ltd. A certain ICP preparation No. 00000000-0
