Permanent Magnet Direct Drive Motors in the Mixing Industry

MAGLAND Motor started producing permanent magnet synchronous motors from year 2010. As a national high-tech enterprise, MAGLAND has integrates production, education as well as product research. Our focus is to develop energy saving PMSM systems. By supporting national objectives: carbon peak, carbon neutrality, emission reduction and smart growth, MAGLAND won the title of provincial "Specialized, Refined, Distinctive, and Innovative" enterprise.

MAGLAND has developed three generations of motor products:

1. Self-starting permanent magnet motors.

2. Variable frequency motors and integrated drive motors.

3. Permanent magnet direct-drive motors and permanent magnet direct-drive drums.

In today’s industry, our third generation, the Permanent Magnet Direct-Drive Motors started to being accepted and being widely used. We can see direct drive motors being used in areas such as medical, aerospace, mixing, chemical production and other industrial sectors. Especially in mixing industry, direct-drive motors are well accepted and won good feedback, regarding on the energy and space saving, as well as reducing the maintenance cost. As mixers usually work on low speed but high torque, this is exactly direct-drive motors are excellent at.

The traditional drive system is using a gearbox, pully and belt to reduce the speed out come from the motors. However, the gearbox will increase the torque, which will waste energy, also increase the maintenance.

While by using a direct-drive system that is connected straight to the load, we never need the gearbox, pulleys, and belts. This has greatly saved the space, as well as reducing energy consumption and maintenance efforts.

Five Key Benefits of Permanent Magnet Direct-Drive Motors

1. High Efficiency and Energy Savings

1) Simplified Drive System:​ No longer need the gearbox and pulleys which would occupy a lot of space in the drive chain. It is also energy saving and improves overall system efficiency.

2) High-Efficiency Motor:​ Permanent magnet synchronous motors meet the highest national efficiency standards (IE5/IE4). They maintain high efficiency across a broad load range (30% to 120%). The overall system efficiency can be improved by over 20%.

3) Soft Start to Save Energy:​ An intelligent drive controller is designed in the direct-drive motors, which manages startup and operation. The starting current of the system is lower than traditional drive chain, it has lower impact on the power grid and has lower requirement on the electricity supply.

2. Low Speed, High Torque – Stable, Reliable, Low Noise & Vibration

Mixer motors operate at low speeds but high torque. During startup, the peak torque can exceed twice of the rated torque, direct-drive motors can solve heavy load starting challenges. During the overall operation, the torque delivery is smooth, which helps to ensure stable equipment performance with low noise and vibration levels.

3. Low Maintenance Costs

By taking out the gearbox, the number of potential failure points is greatly reduced. This will significantly enhance equipment reliability and reduce maintenance requirements.

4. Digital Monitoring – Easy Operation and Maintenance

Real-time motor monitoring is possible in direct-drive motors. By analyzing the collected during real work, engineers can optimize motor design, improve quality, and reduce production cost. The system provides maintenance reminders, which helps more precise and efficient servicing. Also, the very important, fault warnings setting will help prevent unscheduled downtime and potential accidents.

5. Compact Design – Small Footprint

To remove the gearbox and belt drive components, we can have a much more compact motor design. It occupies less floor space and improves overall spatial efficiency in the plant layout.