With the continuous development of the electric vehicle industry, electric motors used in electric vehicles and other related technologies are also advancing. Due to the shortage of raw materials in the market, many manufacturers began to develop faster electric car drive motors, mainly because the faster the speed of the drive motor, the more you can reduce the size of the motor, which helps to reduce the consumption of raw materials.
A team of researchers at the University of New South Wales (UNSW) in Australia recently developed a new high-speed electric motor that can achieve speeds of up to 100,000 revolutions per minute, the newsroom reported. The researchers say the new electric motor achieves a maximum power and speed that exceeds that of existing laminated permanent magnet synchronous motors (Interior Permanent Magnet Synchronous Motor), making it the fastest laminated permanent magnet synchronous motor in the world built with commercially available laminated materials.
Dr. Guoyu Chu of the team said that the trend of electric vehicles is to have faster motors, and as the motor speed increases, the weight of the motor can be further reduced and less energy is consumed. Therefore, this is conducive to enhancing the reduction of costs and increasing the range of electric vehicles. He said the new motor has already reached 100,000 revolutions per minute, with a peak power density of about 7 kilowatts per kilogram.
Dr. Chu said that the electric motor system has scalability and can adjust power and speed, if you want to adjust the electric motor to fit Tesla electric cars, it will take about 6-12 months.
The output power of the motor is determined by the product of torque and speed, and the higher the speed, the lower the torque of the motor, while the output power remains the same. The torque, on the other hand, can be divided into the radius of the motor and the force applied to the motor. The smaller the torque, the smaller the radius of the motor and the smaller the motor can become, given that the force applied to the motor remains the same.
