Permanent magnets to seize the tide, "big one" first met
Now this "double male hegemony" situation has been quietly changing. As a representative car manufacturer of AC asynchronous motors, Tesla has already switched to the permanent magnet synchronous motor camp. This time, the replacement motor has released a key signal - the permanent magnet synchronous motor is more suitable for passenger cars! What are the advantages of the motor, we take the current domestic first-class OEM factory BYD as an example, let's take a look.
As the oldest car manufacturer in the market to get involved in new energy vehicles, BYD has a lot of achievements in the field of permanent magnet synchronous motors. The driving motors of its dynasty series are lighter in weight, smaller in size and more efficient, and the speed is increased to 15,000. The rpm makes the motor lose 35% while ensuring power. For electric vehicles, weight reduction is to reduce the weight, and the weight is lighter and longer. And because of its own advantages, the permanent magnet synchronous motor can be made smaller, BYD will drive the motor, motor controller and reducer in one, which makes the power assembly volume drop by 30% compared with the volume of the split system. Save more space for the insiders and make the driving experience more comfortable. In addition, compared with AC asynchronous motors, permanent magnet synchronous motors are also more advantageous in terms of driving efficiency. For example, BYD's new generation of Song EV500 has a maximum efficiency of 96% for permanent magnet synchronous motors, making the vehicle extremely large. Most of the speed range can ensure high efficiency power output, which is also an important guarantee for the long battery life of pure electric vehicles.
to sum up
From the current point of view, the three major motor genres have their own characteristics in different fields, and the switched reluctance motor is fully blooming in the commercial vehicle field. In the passenger vehicle field, although the permanent magnet synchronous motor and the AC asynchronous motor each have advantages, However, from the perspective of market performance, the permanent magnet synchronous motor camp has achieved even better results. Like BYD, a domestic old-fashioned new energy vehicle company, this year, several explosion models including Yuan EV360, the new generation Song EV500 and Qin ProEV500 have been launched. Products, sales have hit record highs, and these products are all equipped with permanent magnet synchronous motors.
It is believed that with the development of the market, in the pure electric passenger vehicle market in the next few years, the permanent magnet synchronous motor will continue to squeeze the market share of AC asynchronous motor. If the existing technical problems cannot be solved in the future, it is used for the discharge machine. The space for more batteries is still limited, so the space left for AC asynchronous motors in the market will be smaller and smaller.
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