Top 10 Technology Directions And Trends in The Field Of Motor Control

As technology progresses and the economy continues to develop, the field of motor control also shows a good development trend, motors are widely used in various fields, and today we share with you the top ten technical directions and trends in the electric control industry

1. Integration is dominating the motor control industry due to advances in technology. Motor topologies such as brushed AC/DC and AC induction are rapidly being replaced by permanent magnet synchronous motors (PMSM) and brushless DC motors (BLDC).

2. The stator winding is the only mechanical difference between BLDC and PMSM motors. The stator winding has a variable geometry. The motor magnet is always opposite to the stator. These motors are ideal for servo motor applications because they provide great torque at low speeds.

3. Brushless DC motors and permanent magnet synchronous motors are more efficient and reliable than brushed motors because they do not require brushes or commutators to run the motor.

4. Instead of using brushes and mechanical commutators, brushless DC motors and PM synchronous motors use software control algorithms to drive the motor.

5. PM synchronous motors and brushless DC motors have a simple mechanical design. On the non-rotating stator of the motor, there is an electromagnetic winding and a permanent magnet is used to create the rotor. The stator is always on the other side of the magnet, either internally or externally. On the other hand, the rotor is always in motion (rotating), while the stator is always fixed.

6. Brushless DC motors are available with 1, 2, 3, 4 or 5 phases. Although they may have various names and drive algorithms, by nature they are all brushless.

7. Some brushless DC motors are equipped with sensors that make it easier to determine the position of the rotor. These sensors - Hall sensors or encoders - are used by software control algorithms to support motor commutation or motor rotation. These sensor-equipped brushless DC motors are needed for applications that must be started under heavy loads.

8. If the brushless DC motor lacks sensors to determine the rotor position, mathematical models can be used. The arithmetic representation of these sensorless algorithms. In the sensorless algorithm, the motor acts as a sensor.

9. Permanent magnet synchronous motors and brushless DC motors offer certain significant system advantages over brushed motors. They can use an electronic commutation system to drive the motor, which can increase energy efficiency by 20 to 30 percent.

10. For many modern commodities, variable motor speeds are necessary. In order to vary the speed of these motors, pulse width modulation (PWM) is required. Pulse width modulation achieves variable speed by precisely controlling motor speed and torque.

These are the 10 major technological directions and trends in the field of motor control. For more information about motors, please feel free to consult us!