DC motor is a motor that runs on DC. The DC motor is usually brushed or synchronous. The brushed DC motor generates torque directly from the DC power supplied to the motor through internal commutation, fixed permanent magnets and rotating electromagnets. Brushless DC motors have the advantages of low starting cost, high reliability, simple speed adjustment, etc. The disadvantages include high maintenance and low life for high-intensity use. Synchronous DC motors (such as brushless DC motors and stepper motors) require external commutation To generate torque. Brushless DC motors use rotating permanent magnets in the rotor, fixed electromagnets on the motor housing, and a motor controller that converts direct current to alternating current.

The advantages of brushless motors include long life, little or no maintenance, and high efficiency. The disadvantages are high initial cost, complicated motor speed controllers, and other types of DC motors that do not require phase commutation, including unipolar motors and ball bearing motors. Portability using battery power, high starting torque, two-way operation, design for variable speed, excellent speed control, and unparalleled reliability. Many industries rely on DC motors, and their use was limited in the decades before DC motors were improved. Today, many different applications rely heavily on these motors in many industries.

Principle of permanent magnet DC motor

1. Force is generated when current flows in an inductor in a magnetic field. 2. The force generated in the conductor in the magnetic field is determined by the magnetic flux vector, the current flowing in the conductor, the length of the conductor and the mechanical force vector. 3. This force produces torque in a rotating electric machine. The torque is determined by the number of conductors, the current flowing in the conductor, the average winding radius, the effective conductor length, the rotor torque and the magnetic flux. 4. Voltage is generated by any conductor moving in the magnetic field. 5. The rotating electrical machine generates back electromotive force, which is determined by the number of conductors, effective conductor length, radius, angular velocity, induced voltage and magnetic flux vector. 6. By adding a mechanical commutator to the permanent magnet motor, a brush type permanent magnet DC motor can be developed.

DC motor design and customization

The design and customization of DC motors benefit from the close cooperation between sales engineers and customers to precisely meet customer application requirements. In this way, customers will eventually get a motor that is perfect in meeting the application, when the actual load matches the design. , The motor will exert its best performance.

For example, if the load of a DC motor is lower than the original design, its life will be shortened, and if the load of the motor is higher than the design, excess heat will be generated. Either of these two conditions may cause premature motor failure, which means premature failure of the product. The design and customization of the motor match the profile of the customer's application environment, ensuring a durable motor with excellent performance.

With high-quality materials and excellent craftsmanship, the accurate application of matching designs of DC motors is essential. In order to ensure that all customer requirements are met, the motor manufacturer consists of a team of highly skilled engineers who can test the current use Of any motor to determine its accurate performance. Based on this result, a new motor design can be created to improve the current motor performance and will improve the final motor performance.

Motor manufacturing companies not only provide product manufacturing with well-defined and modular solutions, but also provide engineering services similar to motion consultants. In this type of organization, the product becomes part of the overall picture. Unlike a strict manufacturing company, the mission of the motor manufacturing industry is to provide an optimized drive system for a specific application.

In this way, this solution will alleviate engineers' worries and worries, customers will be able to eliminate over-engineering while ensuring performance, and will be able to obtain a wide range of modular products to meet most needs. The system solution will provide customers with high-quality motion, reduce trouble for the engineering and maintenance teams of motor manufacturing, and provide the ability to maintain its reputation for quality, thereby preventing the loss of future opportunities.

in conclusion

Due to too much investment in the design and manufacture of permanent magnet DC motors, motor manufacturers need highly skilled engineers to create corresponding motors specifically for customer applications to ensure excellent and reliable operation. Therefore, most of the motor industry will adopt a customized approach instead of using standard motors.

Our BG Motor engineer team has more than ten years of rich experience. The customization of motors can be achieved in full accordance with customer requirements, and our quality also exceeds most suppliers. If you need a customized motor, we will be your best choice.