Why do customer need the IE5 PMSM Motor

The IE5 era has arrived, and the electric motor, as one of the most widely used electrical devices, can add up to even a 1% increase in efficiency, and the final stroke value will be a huge benefit. The following will discuss which customer groups need IE5 energy-efficient motors, and what are the advantages of IE5 motors?

What is IE3, IE4, IE5?

This is the standard level for motor energy efficiency issued by the International Electrotechnical Commission (IEC), of which IE5 is the highest efficiency level currently in mass production, which can be found in IEC TS 60034-30-2:2016. According to the standard, IE5 refers to grid-powered AC motors, variable speed AC motors. From the IEC standard, there is no distinction between the type of motor, permanent magnet or asynchronous motor, the range is relatively wide, as long as the energy efficiency is reached, permanent magnet or asynchronous motor can be IE5 motor.

Why do some customers need IE5 motors? Is it worth buying?

Before answering this question, let's take the example of the most widely used three-phase asynchronous motor, which in 2014 the IEC judged that the IE5 motor "is not yet commercially valuable". What is the situation today? In the 2021 China "Motor and Control Application", there is an article "Development of IE5 Energy Efficiency Class Three-phase Asynchronous Motor", which reads: "In terms of design, the main consideration is to use high-quality cold-rolled silicon steel sheets, and the cast copper rotor process scheme is considered for low-power motors, and at the same time, comparative tests and verifications of unequal turn windings and fans are carried out to further reduce motor loss." In terms of technology, referring to the successful development experience of two series of ultra-high efficiency three-phase asynchronous motors such as YE4 and YZTE4, the main consideration is to provide machining accuracy, reduce the burr of stator and rotor punching, etc., and further reduce the no-load loss of the motor. From the conclusion of the article, it can be seen that the technical aspects of IE5 motors have been realized by many motor factories, but the process of achieving this is to provide the process by piling up materials, which means that the cost has increased dramatically. Therefore, there is a phenomenon in the air compressor industry: the permanent magnet motor that was once high above is cheaper than the asynchronous motor. The reason is that the permanent magnet synchronous motor is to improve the energy efficiency through the application characteristics of the permanent magnet, and the requirements for materials and processes are not strict. Therefore, in the international market, POWER JACK MOTION mainly provides permanent magnet synchronous motors to achieve IE5 energy efficiency, and control it within a reasonable and objective cost range.

The reason why customers are willing to invest in permanent magnet synchronous motors is the huge return brought by IE5's improved energy efficiency. How much energy efficiency provides? Take a 90kW 4-pole motor as an example, if it runs for 8000h per year, the price per kilowatt-hour is 0.7 yuan to calculate the cost and benefit:

It should be noted that the above is calculated based on theoretical efficiency, and in actual operation, the efficiency is not a fixed value, but varies according to the load, so the effect of actual operation needs to be specifically evaluated. So whether the IE5 motor is worth the investment or not, everyone has their own answer.

Conclusion: The development direction of high-efficiency motors is determined, and more and more customers use IE5 permanent magnet synchronous motors in air compressor equipment, industrial fans, industrial pumping stations, spindle motors and other industries. This is both a commitment to carbon neutrality and a significant return on investment for customers.