The power factor can be as high as 0.9 or more. Safe, reliable and comfortable. The use of permanent magnet synchronous motor drive can effectively prevent the elevator from rolling away. At the same time, the motor can also provide sufficient torque at low frequency, low voltage, and low speed to prevent the elevator from shaking during the startup slowdown process and improve the comfort during the elevator starting and braking process. In order to balance the tilting moment exerted on the car when the car enters and exits the elevator, the car guide should use no less than four rigid steel solid guide rails. The deformation of the guide rail should be limited to a certain range to ensure that: there should be no accidental unlocking of the door; the action of the safety device is not affected; the moving parts should not collide with other parts. There are two control button boxes in the car, so the driver can control the elevator without stepping out of the car. The specialized circuit control and display system is convenient for both the driver inside the car and the driver waiting outside the car. There is a safety guide device on the ground inside the car to ensure the safety of the elevator and the car. The elevator car with front and rear doors makes it easier and safer for cars to enter and exit the car. Machine room-less elevators that can be arranged with various traction methods show a high degree of freedom and flexibility even in the layout of machine rooms and small machine rooms. Loads are being loaded and unloaded, the load of the elevator increases and decreases suddenly, and the force on the car is uneven. This is very different from the way ordinary freight elevators gradually load or unload the weight of cargo. The structural design of car elevators should be able to adapt to this feature. It has a car suitable for carrying cars. The car is the only element specified in the definition of a car elevator that distinguishes a car elevator from other elevators. This determines that the internal dimensions of the car elevator should be compatible with the appearance of the passenger car. According to the new economic car definition standards and the "Garage Building Design Code", the outer dimensions and weight of various passenger car design models are determined. Therefore, the car elevator car size should also be determined.