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motor maintenance and repair knowledge daquan
Release time:2014-8-19 17:09:54 viewed:2928

1, what is called motor?

Answer: the motor is the battery electrical energy into mechanical energy,driving electric vehicle wheel with rotating parts.

2, what is the stator?

Answer: not rotating brush or brushless motor work part. The motor shafthub type brush or brushless gearless motor called the stator, the motor can be called the inner stator motor.

3, what is the rotor?

Answer: the rotating brush or brushless motor work part. Hub type brush or brushless gearless motor shell called the rotor, the motor can call external rotor motor.

4, what is the name of a carbon brush?

Answer: brush motor inside in the top phase converter surface, when the rotation of the electric motor, the electric energy by phase converter is transported to the coil, due to its main components are carbon, known as the brush, it is easy to wear. Should be regular maintenance and replacement, and clean up the carbon deposition.

5, what is the brush?

Answer: in the brush motor which contain and keep the brush positionmechanical guide groove.

6, what is the phase changer?

Answer: brush motor inside, with strips of metal surface are mutually insulated, along with the rotation of the rotor of the motor, the positive and negative strip metal alternate contact brush pole, alternate realize motor coilcurrent direction, the completion of phase change brush motor coil.

7, what is the sequence?

Answer: brushless motor coil arrangement order.

8, what is the magnet?

Answer: magnetic material for call high field strength general, electric vehicle motor adopts NdFeB rare earth magnet.

9, what is the brush motor?

Answer: when the motor is working, coil and commutator rotation, magnetic steel and a carbon brush does not turn, alternating direction of the coil current is * phase shifter and brush for motor rotation to complete with the.In the electric vehicle industry brush motor of high speed motor with brushand low speed motor. Brush motor and brushless motor has a lot ofdifference, from the name can be seen on the brush motor carbon brush,brushless motor without brush.

10, what is the brushless motor?

Answer: alternating current DC provides different direction by the controllerto achieve the motor inside the coil current direction, no brush andcommutator between rotor and stator brushless motor.

How to realize the commutation of 11, motor?

Answer: brush or brushless motor in the rotation direction of electricity,motor inside the coil needs changing, so as to achieve the motor can rotate continuously. Brush motor commutation * phase converter and brushfinished jointly, brushless motor controller to complete *.

12, what is missing?

Answer: the three-phase circuit of brushless motor or brushless controller, aphase can not work. The main points of phase phase phase hall phase. For the performance of motor jitter does not work, or rotation weakness and large noise. The controller is easy to burn out of work in the lack of phase state.

Type 13, the common motor which has several?

Answer: the common motor: brush gear hub motor, brushless gear hub motor, brushless hub motor, brushless gear hub motor, side hung motoretc..

14, from the motor type is how to distinguish between high and low speedmotor?

Answer: A brush gear hub motor, brushless gear hub motor belongs to thehigh speed motor;

B brushless gear hub motor, brushless gear hub motor belongs to the low speed motor.

15, the motor efficiency is how to define?

Answer: the motor efficiency refers to the output of the motor's mechanical energy and power source ratio. Represented by the letter "soul".

16, brushless motor is how to classify it?

Answer: from the phase can be divided into two categories, namely, divided into brushless motor 60 degree and 120 degree phase angle speed;according to points, can be divided into the high speed brushless motor andlow-speed brushless motor; according to whether the motor with positionsensor to points, divided into a position sensor brushless motor andSensorless Brushless DC motor.

17, what is the position sensorless brushless motor?

Answer: for a sensorless brushless motor must first the pedal up after thecar, make machine with rotating speed controller must, to recognize thephase brushless motor controller, then to motor power supply. Because it cannot achieve zero speed start, so little. But because there is no sensor,all less of a fault point and the cost is lower.

What is the power consumption is 18, brushless motor Hall roughly in therange?

Answer: the power consumption of the brushless motor Hall generally is in the range of 6mA - 20mA range.

How much is the voltage range 19, brushless motor Hall?

Answer: the voltage range of brushless motor Hall is generally in 3-24V.

20, general motor can work normally in high temperature? Most motor can bear high temperature?

Answer: if the measurement of motor cover temperature exceeds theambient temperature 25 degrees, that has exceeded the normal range of temperature rise of the motor, should be in the 20 degrees below thetemperature rise of general motor. General motor coil is made of enameled wire winded, and enamelled wires at temperatures above 150 degrees thefilm because of excessive high temperature fall off, causing the coil short circuit. When the coil temperature is in 150 degrees above the motor shellshowed the temperature is around 100 degrees, so if its shell temperatureis the highest temperature on the basis of the motor under 100 degrees.

Should be in 20 degrees below 21, the temperature rise of the motor end cover of the motor, namely the temperature above the temperature of the environment should be less than 20 DEG C, but what are the reasons forthe heating of the motor exceeds 20 DEG C?

Answer: the direct cause of motor heat is due to the current caused by the.The general may be coil short circuit or open circuit and magnet demagnetization in motor resulting in low efficiency, the normal situation ismotor for long time high current operation.

22, how to measure phase brushless motor?

Answer: switch on the power supply controller, by the controller to the hall element phase power supply, can detect the brushless motor.

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