Digital frequency conversion power generation type electric consult professionals now on the market that is true (such as Ji'nan Qingqi), established the principle of power generation, can have much effect.Recently, I would like to buy an electric car, please choose which type of motor (brush or brushless, tooth free, high-speed or low-speed), higher cost performance, what the configuration of the battery more durable?. Thank you
High speed permanent magnet brushless motor:The utility model is composed of a stator core, a magnetic steel rotor, a sun wheel, a speed reducing clutch, a wheel hub shell, etc..The top of the motor can be fitted with a Holzer sensor for speed measurement.There are three types of position sensors: magnetic, photoelectric and electromagnetic.The brushless DC motor magnetic sensitive position sensor, the magnetic sensor element (such as Holzer, Ci Min diode, magnetic sensitive element, transistor, magnetic resistor or ASIC etc.) mounted on the stator assembly, to detect a permanent magnet, when the rotor rotation magnetic field change. Electric vehicles are multi-purpose Holzer components.A brushless DC motor using a photoelectric position sensor is provided with a photoelectric sensor element arranged on a stator component in a certain position, and a light shield is arranged on the rotor, and the light source is a light emitting diode or a small bulb. When the rotor rotates, the photosensitive components on the stator will produce pulse signals intermittently at a certain frequency due to the function of the light shield.
It consists of permanent magnet rotor, multipole winding stator and position sensor.Brushless DC motor is characterized by brushless, using semiconductor switching devices (such as Holzer components) to achieve electronic commutation, that is, the use of electronic switching devices to replace the traditional contact commutator and brush. The utility model has the advantages of high reliability, no commutation spark, low mechanical noise, etc..According to the change of the position of the rotor position sensor, along a certain order current to the stator windings of the converter (i.e. the detection of rotor position and stator winding and relative position of the sensing signal at a location determined by the signal conversion circuit after processing to control the power switch circuit of winding current switch according to certain logical relation).
The rotor is generally made of laminated silicon steel sheets, and the enameled wire is wound between the two grooves of the rotor core (three slots with three windings), each of which is welded to the metal plate of the commutator.The brush is a conductive component connecting the power and rotor windings, and has two performances of electrical conduction and wear resistance. The brush of permanent magnet motor is made of single metal sheet or metal graphite brush and electrochemical graphite brush.
Motor classification of electric vehiclesPermanent magnet DC motor:It consists of stator, magnetic pole, rotor, brush, shell and so on.The stator magnetic pole adopts permanent magnet (permanent magnet steel), and has ferrite, aluminium nickel cobalt, neodymium iron boron and other materials. According to the structure can be divided into several types of cylindrical and tiles.
