As energy conservation becomes the focus of global attention, the energy efficiency of motor design is also becoming an issue of concern. Motor drive products continue to cooperate with the industry’s development trends, helping designers improve energy efficiency, reduce energy consumption, improve reliability, reduce the number of components, etc., and play an active role in achieving energy savings. Development trend of the motor market After 100 years of development, the application fields of the motor have been very wide. The application of motor-driven products in the automotive and industrial fields is a microcosm of the main trends in the motor market. The first is the trend of electrification of automobiles, that is, automotive manufacturers integrate high-efficiency motors to replace the power of traditional internal combustion engines. Brushless DC (BLDC) motors are usually used to replace belt and gear drives. Valves, heating and air conditioning, fans, etc. Because of the excellent performance of BLDC motors, they have also begun to enter other applications that traditionally use brushed DC (BDC) motor solutions.
Another trend is that the increase in the application assembly rate has increased the number of motor installations, such as motorized heating, ventilation and air conditioning (HVAC) air flap control (mainly used for brushed DC and unipolar stepper motors) are also beginning to be applied to lower-end cars HVAC system. BLDC motors are becoming more and more common Purifier motor manufacturers in industry and telecommunications. Typical applications include fans,Purifier motor , blowers, pumps and compressors. BLDC motors are more energy efficient than AC motors or switched reluctance motors. BLDC motors enable low-cost variable-speed applications, especially for integrating sensorless commutation algorithms, thereby eliminating the need for external sensors. Energy-saving trend new requirements for motor drive applications Energy cost is usually the most important part of the motor’s entire life cycle cost. Therefore, using more efficient motors can save a lot of energy. The new requirements for motor drive in the energy saving trend include several aspects. First, energy efficiency is determined by the selected motor technology and motor structure. Therefore, it is required to choose a motor that can convert the electrical energy into mechanical energy to the highest level. Secondly, it is necessary to choose a driving circuit that can minimize the power consumption of the driver and improve the energy efficiency.
Thirdly, it is necessary to realize optimized energy consumption scheme by improving motor drive intelligence. In addition, some applications require no brushed motors in the system (using stepper or brushless DC motors); sensorless commutation (no potentiometer or Hall sensor feedback), embedded motion control algorithms (for low Power applications), to maximize energy efficiency, reduce audible noise, and improve electromagnetic interference (EMC) performance. In addition, there are some applications that require the drive circuit and the motor to be arranged next to the electromechanical actuator and connected to the central control unit through a bus (LIN, I2C, etc.).
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