FOC and Non-FOC motor difference performance comparison

What is FOC, FOC definition

Field-oriented control (FOC) also called vector control. It is a mathematically advanced way of control, The purpose of FOC is to provide better efficiency at higher speeds and more accurate position control. FOC also has the added benefit of providing positioning feedback if necessary for the application where the motor will be used. 

With electric motors, variation in torque is more difficult to create than simply varying current, even though that may be the most obvious assumption at first glance. Torque is created when current is applied perpendicularly to the magnetic field in the rotor.  

Here below is a example of FOC diagram

Application of FOC and advantage.

1. Industrial drive: 
  FOC control algorithm is often used in motor drive control in the industrial field, such as machine tools, printing machines, textile machines, cranes, etc. It can achieve precise speed and torque control and improve production efficiency and quality.

2. Household appliances:
 FOC control algorithm is also used in household appliances, such as washing machines, air conditioners, refrigerators, etc. Through FOC control, high-efficiency and low-noise operation can be achieved to improve the user experience.

3. Electric vehicles:
  In electric vehicles, FOC control algorithm is used to control the drive motor to achieve efficient and precise power output. It can improve the range and performance of electric vehicles.

4. Wind power generation:
FOC control algorithm is used in wind power generation system to control the speed and torque of wind turbines to achieve maximum wind energy capture and stable power output.

5. Servo system:
FOC control algorithm is often used in servo systems, such as robots, automated production lines, etc. It can achieve high-precision position and speed control and improve the responsiveness and stability of the system.

6. Power transmission:
FOC control algorithm can also be applied to the field of power transmission, such as inverters, power regulators, etc. It can achieve efficient control of AC power and improve the quality and efficiency of power transmission.

In short, FOC control algorithm is widely used in industrial control, household appliances, electric vehicles, wind power generation, servo systems and power transmission. Its high efficiency, high precision and good dynamic performance make it an important technology for AC motor control. With the continuous development of technology, the application field of FOC control algorithm will continue to expand.

Video demostration of FOC and non-FOC difference

In this video there are 3 aspects to compare. 1: observe the liner performance, FOC has better liner performance. 

2: check the steadiness comparison, FOC is more stable. 

3: apply friction power against both motors, FOC still have good performance.