The Development History of Brushless Motors

1.Early exploration and theoretical foundation
The discovery of electromagnetic induction phenomenon: In 1831, Faraday discovered the phenomenon of electromagnetic induction, which laid the theoretical foundation for the development of modern motors.
The development of DC motors: Starting from the 1840s, people successfully developed the first DC motor, which was an important milestone in the development of motor technology.
2. The emergence of the prototype of brushless motor
The idea of transistor commutation: In 1955, American Harrison first proposed the idea of replacing brush contact with transistor commutation circuit, which was regarded as the prototype of brushless DC motor. This innovation has opened up a new path for the development of brushless motors.
3. The birth and initial application of modern brushless motors
The Invention of Three phase Brushless Motor: In the 1960s, American electrical engineer Terry Lakein invented a three-phase brushless motor with strong magnetic force and high efficiency performance. This invention is hailed as a revolutionary breakthrough in the history of electric motors, and Terry Legin is therefore known as the "father of brushless motors".
Application of Hall element commutation technology: In 1962, a brushless DC motor was successfully developed using Hall element (Hall effect rotor position sensor) for commutation. The application of this technology greatly improves the performance and reliability of brushless motors.
Application of Aerospace Technology: Due to its high reliability, brushless motors were first applied in aerospace technology. For example, in 1964, brushless motors were used by NASA for satellite attitude control, tracking control of solar panels, and driving of pumps on satellites.
4. Technological progress and widespread application
The emergence of new commutation technology: In the early 1970s, people began to try using magnetic sensitive diodes with higher sensitivity than Hall elements to achieve commutation. At the same time, new technologies such as capacitor phase-shifting and digital ring distributor have emerged to achieve sensorless brushless DC motors.
Multi domain application: With the continuous maturity of brushless motor technology, its application fields are gradually expanding. Expanding from the initial aerospace technology to multiple fields such as military equipment, industrial control, civilian equipment, and household appliances.
Application of permanent magnet new materials: With the development of permanent magnet new materials, especially the emergence of rare earth permanent magnet materials, the performance of brushless motors has been further improved. These new materials have higher magnetic energy product and better temperature stability, making brushless motors excellent in terms of efficiency and energy saving.
5. Contemporary Development and Innovation
Technological progress drives market growth: In recent years, with the rapid development of power electronics technology, automatic control technology, and intelligent manufacturing technology, the performance of brushless motors has been continuously improved and costs have been continuously reduced. This has made brushless motors increasingly competitive in the market and the market size continues to expand.
Innovative applications: In emerging fields such as new energy vehicles, smart homes, and industrial automation, brushless motors have shown great potential for application. For example, in new energy vehicles, brushless motors as driving motors have advantages such as high efficiency, energy saving, and low noise; In smart homes, brushless motors are widely used in devices such as curtains and floor cleaning robots, improving the convenience and comfort of home life.
In summary, the development history of brushless motors is a process of continuous innovation and progress. From early theoretical exploration to the widespread application of modern technology, brushless motors have occupied an important position in the field of motors and will continue to play an important role in future development.