Electric cars are generally divided into several kinds? What is the difference between the motors?
A brush motor is a rotating machine containing an electric brush device that converts electrical energy into mechanical energy (motor) or converts mechanical energy into electrical energy (generator). Brush motor is the basis of all motors. It has the characteristics of quick start, timely braking, smooth speed regulation in a large range and relatively simple control circuit.
Brushless DC motor is composed of motor main body and driver. It is a typical electromechanical integration product. Because of the brushless DC motor is controlled to run, so not like synchronous motor frequency control under heavy start as in the rotor plus a start winding, does not produce oscillation and step mutation in the load. The permanent magnet of small and medium capacity brushless DC motor is now using rare earth neodymium iron boron (Nd-Fe-B) material with high magnetic energy. Therefore, the volume ratio of the rare earth permanent magnet brushless motor reduces a frame number compared with the three-phase asynchronous motor of the same capacity.
Electric vehicle has two kinds of brushless brush, brush electric vehicles, because of the need to use carbon brush, so the motor in use after two or three years to replace the carbon brush, some not too convenient, and brush the efficiency of the electric vehicle is relatively poor, climbing ability is poor. The efficiency of Brushless high, climbing or.
