Future Motor Development Trend: High Efficiency Motor & Intelligent Motor Mar 08,2021

With the global energy crisis becoming more and more prominent, governments and enterprises of all countries are trying to find the way of sustainable development of energy. At present, China is also faced with many problems in energy restriction, so it is particularly urgent to balance the relationship between energy and economic development.

According to statistics, in China, the motor is an important industrial energy consumption equipment, of which the electricity consumption accounts for about 60% of China's entire industrial power consumption. The potential of energy saving is huge in China.

High efficiency and energy saving are core focus of development

To save energy and protect the environment, high efficiency motor is the current international development trend. According to the motor running time, the European CEMEP standard divides the efficiency into EFF1 (the highest), EFF2, EFF3 (the lowest) three levels, which was implemented step by step from 2003 to 2006. The IEC 60034-30 standard classifies the motor efficiency into five grades: IE2, IE3, IE4 and IE5 (the highest). China is committed to implementing IE2 and above standards from July 1, 2011. The international requirement and the domestic energy shortage situation all need to take the motor energy saving development as the primary task.

On the discussion of improving the efficiency of the motor, the industry generally believes that it can be achieved through the following ways: energy-saving transformation of the motor system, the use of new technology and new materials to reduce energy consumption, by reducing the loss of electromagnetic energy, thermal energy and mechanical energy to improve the efficiency of the motor. At present, the DC frequency conversion widely applied in the household electrical appliance industry is a model of energy saving design. Experts say that if only the motors and their haulage systems added each year were replaced with energy-efficient ones, more than 100 billion kilowatt-hours of electricity could be saved each year, more than the total annual power generation of the Three Gorges Power Station, and carbon dioxide emissions could be reduced by nearly 100 million tons.

Although the country is actively promoting, but there are still five problems in the motor system energy saving to be solved: technical standards and other basic work, efficient general purpose and dedicated equipment, the reasonable matching of motor system and operation efficiency, third party energy conservation service team construction, incentive policies and institutional mechanisms.

high efficiency motor


Trend: Intelligent Control

With the development of communication technology, intelligent control has become a hot topic in the field of motor. The automatic washing machine, automatic curtain and so on used in our life all transmit the intelligent signal. The motor control also tends to be simple and intelligent.

The function of intelligent motor control is much more than that of traditional motor control. Intelligent motor realizes low carbon operation, and the failure probability and downtime are greatly reduced. It has become the inevitable trend of the development of motor control. For example, a smart power module can be used to reduce the size of the motor and simplify the design by forming a power interface between the microcontroller or DSP and the motor. The advantages of this module over previous discrete solutions are smaller parasitic inductors and higher reliability, because all power components in the module are from the same batch of chips, providing consistent test performance.

The intelligent power module can directly interface with the microcontroller's low voltage TTL or CMOS output and is equipped with a protection circuit. The module is equipped with a thermistor to monitor junction temperature, a logic protection circuit to prevent direct connection between upper and lower bridge arms, dead time control, and a drive waveform shaping circuit to minimize EMI. In the module, each drive IC can be optimized so that it can complete the switching action of the power device with minimal EMI and drive losses. It's a big boost to energy conservation.

Hot Spot: Brushless DC Motor

After years of development and application of the motor, the industry is now focusing on the brushless DC motor, especially to become the current micro-special motor development hotspot. Brushless DC motor adopts semiconductor switch device to realize electronic commutator, using electronic switch device to replace the traditional contact commutator and brush, thus has the outstanding advantages of high reliability, no commutator spark, low mechanical noise.

brushless DC motor


In short, the current motor industry development of the first priority is to improve the motor energy efficiency, not only to fulfill international obligations, but also for the long-term development of China to do foresight.

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