In recent years, with the increasing demand for efficient and reliable drive systems in various industries, as well as the use of new materials, permanent magnet motors (PM motors) have become more widely used and accepted by the market.And with the widespread use of permanent magnet motors, an innovative solution has emerged: the permanent magnet semi-direct drive system.This technology combines the advantages of permanent magnet motors with the characteristics of gearboxes to provide a powerful alternative to conventional drive systems.

What is a permanent magnet semi-direct drive system?

Permanent magnet semi-direct drive systems consist of two main components: a permanent magnet motor and a gearbox.Unlike direct drive systems, which eliminate the need for a gearbox by connecting the motor directly to the load, semi-direct drive systems utilize a gearbox to enhance performance characteristics.
The use of a gearbox results in enhanced torque output and better control of the motor's speed.This configuration is particularly effective in applications that require high torque at low speeds, such as heavy machinery, conveyor systems and electric vehicles.

Advantages of permanent magnet semi-direct drive system

1 . Improved Efficiency: With permanent magnet motors, the system is able to achieve higher efficiency than traditional induction motors.The permanent magnet motor reduces energy loss and promotes efficient operation of the overall system.

2 . Compact design: The combination of motor and gearbox achieves a more compact design, which is especially important in application scenarios where space is limited.The reduced size does not hinder performance, making it ideal for modern industrial applications.

3 . Improved Torque Characteristics: The gearbox enhances the torque output of the motor, improving performance in high-load applications.This is especially important in scenarios where high starting torque is required.

4 . Flexibility and Customization: Permanent magnet semi-direct drive systems can be customized to meet specific application requirements.By adjusting gear ratios and motor specifications, manufacturers are able to design systems that optimize performance to meet diverse operational needs.

Fields of application

Summarizing the application scenarios of permanent magnet semi-direct drive systems in recent years, we believe that the best application scenarios have the following characteristics:

1. Continuous operation: it is characterized by: more intuitive economic effect of energy saving; high requirements on the stability and easy maintenance of the transmission part.

2. Low-speed heavy-duty: Simple permanent magnet motors are too costly in low-speed heavy-duty scenarios because of the limitations of their torque density ratio ( motor torque density is the ratio of the motor's torque to the motor's total weight ), while the cost-effectiveness of permanent magnet semi-direct-drive systems is very high.

3. Intelligent control: through the frequency converter, more intelligent control requirements can be realized, which can improve the intelligent level of the plant and reduce labor costs to a certain extent.

Permanent magnet semi-direct drive systems represent a major advancement in drive technology, combining the benefits of permanent magnet motors with the efficiency of geared systems, and will play an important role in the future of a wide range of industries due to their compact design, superior efficiency and flexibility.As manufacturers continue to innovate, permanent magnet semi-direct drive systems may become the standard solution for high-performance applications.