Automated equipment uses High Power BLDC Motor 180series

One of the characteristics of high-power BLDC motors

           Our high-power DC brushless motor uses an electronic commutator instead of a mechanical one. Due to the electronic commutation, a driver circuit is required for the high-power DC brushless motor. The commutation circuit of the high-power DC brushless motor consists of two parts: the driving part and the control part. These two parts are not easy to be separated. Especially, for low-power circuits, the two parts are usually integrated into a single dedicated integrated circuit.

           In larger power DC brushless motors, the driving circuit and the control circuit can be integrated separately. The driving circuit supplies electrical energy to drive the armature windings of the motor, which is controlled by the control circuit. The driving circuit changes from a linear amplification state to a pulse width modulation switching state, and the corresponding circuit composition also changes from a discrete transistor circuit to a modular integrated circuit. The modular integrated circuit is composed of power bipolar transistors, power field-effect transistors, and isolated gate field-effect bipolar transistors. Although the isolated gate field-effect bipolar transistor is more expensive, it is more suitable from the perspectives of reliability, safety and performance.

         The driving methods of high-power DC brushless motors vary according to different categories and each has its own characteristics. According to the driving waveform: square wave driving, this driving method is convenient to implement and can easily achieve position sensorless control of the motor; sine wave driving, this driving method can improve the motor operation effect and make the output torque uniform, but the implementation process is relatively complex.