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A concerted global effort is invested to reduce power consumption, and a number of countries/regions require household appliances to meet efficiency standards set by organizations such as the China National Institute of Standardization (CNIS), the ENERGY STAR and the German Blue Angel. To meet these standards, an increasing number of system designers stop using simple and easy-to-use single-phase AC induction motors and start to adopt more energy-efficient low-voltage China brushless DC motor (BLDC) in their designs. To achieve longer service life and lower operating noise, designers of small appliances such as floor sweepers are also turning to more advanced BLDC motors in many of their systems. Meanwhile, advances in permanent magnet technology are simplifying the manufacturing process of BLDC motors, reducing system size while providing the same torque (load), as well as increasing efficiency and reducing system noise.

It’s highly challenging to design systems that use BLDC motors because it often requires complex hardware and optimized software designs to provide reliable real-time control. One option to speed up the design cycle is to use BLDC motor modules from specialized suppliers, but these modules are not optimized for the needs of a specific system. Therefore, an in-depth understanding of motor design and control is still required in order to build high-performance systems optimized for specific application requirements, even when using modules.

The system performance parameter requirements (e.g., speed, efficiency, and noise) are difficult to address by tuning the BLDC motor, but can be solved by developing a sensorless trapezoidal control algorithm in which commutation is determined by the motor’s back-electromotive force voltage, making the tuning operation independent of motor parameters. The integrated motor driver that incorporates sensorless trapezoidal control, e.g., the MCT8316A, can provide optimized system performance without the use of complex interface connection microcontroller. It should also be noted that during motor tuning, the integrated motor driver provides feedback signals such as motor phase voltage, current and motor speed as displayed on an oscilloscope.The integration of advanced control techniques in the sensorless FOC algorithm allows for significantly faster motor tuning, for example, by self-measuring motor parameters or automatically performing tuning of the control loop. The guided tuning graphical user interface (GUI) provides default motor start-up options, which helps to smooth the tuning process and get the motor spinning as quickly as possible. Motor drivers that do not require programming, such as the MCF8316A for FOC and the MCT8316A for ladder control, include several configurable options for motor start as well as closed-loop and motor stop operation. With these options, the performance of best brushless DC motor can be optimized in minutes, significantly reducing the design cycle.

Media Contact Company Name: Chang Zhou ACT Motor Co.,Ltd Email: Send Email Phone: 0086-519-81189628 Address:No.18, Boyang Road, Jintan Area City: Changzhou State: Jiangsu Country: China Website: https://www.act-motor.com/

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