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Product Overview

Customized High Power Low Speed Permanent Magnet Synchronous Motor is an efficient drive device designed for high torque and low speed scenarios. It uses rare earth permanent magnet materials and modular electromagnetic design to achieve direct drive loads without the need for a reduction device. Its core advantages lie in high power density, wide load adaptability and precise speed regulation capability. It is a revolutionary alternative to the traditional asynchronous motor + reducer solution.

Core Advantages

High Power and Low Speed Design

The power range covers 200kW-5MW, the rated speed is 50-300rpm, and the peak torque can reach more than 3 times that of traditional motors.

It adopts a multi-pole design (such as 48 poles and 64 poles), combined with a disc-type axial flux structure, to shorten the magnetic field path and improve the torque output capacity.

High Efficiency and Energy Saving and Wide Range Speed Regulation

The efficiency reaches IE4 (first-level energy efficiency), which saves 12%-20% energy compared to traditional asynchronous motors, and the power factor is up to 0.98.

Supports stepless speed regulation (frequency range 5-50Hz), high efficiency zone covers 25%-120% load, adapts to dynamic load changes.

Reliability and Adaptability

Insulation grade F (155℃), protection grade IP67, adapts to high temperature, high humidity and dust environment.

Modular structure supports power expansion (such as MW-level output through cascading), and installation dimensions are compatible with international standards (such as IEC, NEMA).

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 standards.

Customized Design

Customized Design

The number of poles, winding form and cooling method (such as water cooling, oil cooling) can be customized according to load characteristics, and adapt to extreme working conditions (such as salt spray protection of offshore platforms and low pressure on the plateau).

Integrated intelligent monitoring module, real-time feedback of temperature, vibration and torque data, support predictive maintenance.

Customized Solution - Scenario-based Design

• Extreme working conditions: Customized 180℃ temperature-resistant magnetic steel, suitable for extremely cold areas (-40℃) or high-temperature steelmaking environments (≥80℃).

• Wide voltage adaptation: Supports 380V-10kV high-voltage power supply, frequency coverage 50/60Hz and variable frequency adjustable.

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

Company Advantages

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

1. The Core Principle of Permanent Magnet Synchronous Motors

The harmonious dance of magnetism and electricity. The unique feature of a permanent magnet synchronous motor lies in its rotor, which is embedded with high-performance permanent magnets, while its stator generates a rotating magnetic field using three-phase alternating current. As the current changes, the stator magnetic field acts as a "conductor," while the permanent magnet rotor, like a "dancer adhering to the beat," maintains synchronized rotation. This delicate coordination not only ensures smooth operation but also significantly reduces energy loss.

2. Performance Advantages of Permanent Magnet Synchronous Motors

Small Size, High Power, and Superior Efficiency: Energy conversion efficiency generally exceeds 90%, far exceeding the 70-85% of traditional motors, making it particularly suitable for applications requiring long-term operation.

3. Are Permanent Magnet Synchronous Motors Suitable for High-Precision Applications?

For the same power, they can be 30% smaller than asynchronous motors, enabling more compact equipment designs. Combined with advanced control systems, they offer speed regulation accuracy of up to ±0.1%, making them ideal for applications such as electric vehicles and precision machine tools.

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