Product Overview
Variable Speed Permanent Magnet Synchronous Motor is an innovative and efficient drive device based on axial flux technology. It adopts an ironless structure and nanocrystalline alloy stator winding, combined with a disc-type symmetrical layout (double rotor clamp stator structure) to achieve wide-range stepless speed regulation and high-precision torque control. Its revolutionary lightweight design, ultra-high power density and no cogging characteristics are specially designed for scenes with strict requirements on space, weight and dynamic performance such as robot joints, aerospace, textile machinery and industrial direct drive systems. It is a technical upgrade solution for traditional radial flux motors.
Core Advantages
Structural Innovation
• Ironless core design: The stator winding is wrapped and supported by nanocrystalline alloy materials, which completely eliminates the iron loss (hysteresis loss and eddy current loss) of traditional silicon steel sheets, and improves efficiency by 8%-15%.
• Disc layout: The rotor and stator are symmetrically distributed in a disc shape, the magnetic field path is shortened by 30%, the electromagnetic effective area is increased by 50%, and the torque density is 2-3 times that of traditional motors.
• Modular expansion: Supports single-chip power expansion (such as 10kW cascade unit), and achieves MW-level output through multi-disc cascading (typical case: 260kW cascade solution for mining equipment).
High Efficiency and Energy Saving and Wide Range Speed Regulation
• The efficiency reaches IE5 (first-level energy efficiency), and the high efficiency area covers 25%-120% load and full speed range. The efficiency remains above 95% when running at high frequency (such as above 1000Hz).
• No cogging effect design, uniform magnetic field distribution, torque fluctuation ≤1%, and running stability is significantly better than traditional motors.
Lightweight and High Power Density
• The volume is only 10%-20% of that of asynchronous motors, and the weight is reduced to 50%-60% of traditional permanent magnet motors (taking the 7.5kW model as an example: the weight is 29kg, which is only 38.7% of the 75kg of ordinary permanent magnet motors).
• The disc structure is compact, the axial thickness is reduced by 40%, and it is suitable for installation environments with limited space.
High Dynamic Response and Control Accuracy
• Low moment of inertia design, acceleration time is shortened to 1/3 of traditional motors, and peak torque can reach more than 5 times the rated value.
• Support encoderless vector control, position control accuracy of ±0.01°, suitable for high-precision scenarios such as robot joints and CNC machine tools.
Application Areas
High-end Equipment Manufacturing
• Robot joints: Integrated harmonic reducer, realize direct drive integrated design, torque density of 12N·m/kg, response speed increased by 30%.
• Aerospace: UAV/electric aircraft main propulsion motor, power density ≥5kW/kg, meet the dual needs of lightweight and high reliability.
Industry and Energy
• Mining/steel plant direct drive: Single power 260kW, cascaded output reaches MW level, directly replaces the "asynchronous motor + reducer" system, and transmission efficiency is increased by 20%.
• Breeze power generation: Low wind speed start (level 3 wind), high efficiency zone covers wind speed 3-25m/s, annual power generation is 18% higher than traditional wind turbines.
Textile and Light Industry
• Textile printing and dyeing setting machine: Circulating fan drive motor, operating noise ≤65dB, energy saving rate of 25%.
• Texturing machine: High-speed winding system adaptation, speed range 1000-5000rpm, wire breakage rate reduced by 40%.
Customized Solutions
Scenario Design
Low Temperature Environment
Customized 180℃ temperature-resistant magnetic steel, adapted to the equipment needs of extremely cold areas.
Wide Voltage Adaptation
Supports 100-480V global voltage, frequency coverage 50/60Hz and variable frequency adjustable.
Certification and Standards
Passed GB30253-2024 "Energy Efficiency Limit Values and Energy Efficiency Grades of Permanent Magnet Synchronous Motors" Level 1 certification, in line with IEC60034-30-1 international standard.
Product safety performance has been verified by the National Small and Medium-sized Motor Quality Supervision and Inspection Center, the insulation system has passed the H-level (180℃) heat resistance test, and the protection level is IP67.
Honor And Qualification
The company holds over 80 patents and 18 provincial-level industrial new products. It is certified to ISO9001 for quality, ISO14001:2015 for environmental, and ISO45001 for occupational health. Its products are certified to China 3C, US UL, Canadian CUL, Australian SAA, and EU CE and ROHS.
Application Areas
Textile Industry
① Motors for circulation fans in textile printing and dyeing machines.
② Motors for textile texturing machines.
Industry and Energy
① Mining/Steel Mill Equipment: Single units with power up to 260kW, cascading to MW-class, suitable for direct-drive systems.
② Breeze Power Generation: Low wind speed start-up (force 3) with a wide high-efficiency range, suitable for small and medium-sized wind turbines.
High-End Equipment
① Robotic Joints: High torque density and precise control, supporting integrated harmonic reduction design.
② Aerospace: Lightweight and high power density meet the requirements of drones and electric aircraft.
Case
Case 1
- Location: Daqing Oilfield
- Motor Model: JNPM520-30-255
- Key Parameters:
- Power: 30 kW
- Torque: 1,123 N·m
- Speed: 255 RPM
Case 2
- Location: Daqing Oilfield
- Motor Model: JNPM290-30
- Power: 30kW
- Torque: 286N ·m
- Speed: 1000 RPM
Case 3
- Location: Production equipment for textile printing and dyeing factories
- Motor Model: JNPM173-7.5
- Key Parameters:
- Power: 7.5kW
- Torque: 49 N·m
- Speed: 1450 RPM
The company is committed to building its brand. Through years of hard work, its "Weidi" trademark has been recognized as a "Famous Trademark of Zhejiang Province" and its "Weidi" brand motors have been designated as "Famous Brand Products of Hangzhou." The company has also been recognized as a "Science and Technology Enterprise of Zhejiang Province," a "Patent Demonstration Enterprise of Zhejiang Province," a "Made-in-Zhejiang Product," a "Specialized, Specialized, and Innovative Enterprise of Zhejiang Province," a "National High-Tech Enterprise," and a "National Intellectual Property Advantage Enterprise." It also has established a provincial-level enterprise research institute.
The company actively leverages customer support and its own efforts to continuously improve product quality, enhance product visibility and reputation, and further develop its expertise, strength, and scale in the high-end equipment and smart home motor industries.
FAQ
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