The connection mode of electric motor
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The connection mode of electric motor

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Due to the different way reversing, a motor and brushless motor is not only the internal structure is different, and the difference in the connection mode of also is very big.
1, the brush motor wiring method. A plus or minus two fuses of brush motor. Generally positive, red line is the motor black line is the cathode machine. If you are negative exchange connection, just can make the motor reversal, generally do not damage the motor.
2, brushless motor phase Angle of the judgment. The brushless motor phase Angle is short for the brushless motor phase Angle of algebra, brushless motor each coil in a power cycle inside the coil current direction change point of view. Electric motor brushless motor common algebra phase Angle 120 & deg; With 60 & deg; Two kinds.
watch hall unit installation space location estimation of brushless motor phase Angle, & 120 deg; And 60 & deg; Two phase Angle motor hall unit installation space.
signal measuring hall true value judgment of brushless motor phase Angle
need to explain what is called brushless motor magnetic pull Angle. The number of magnets brushless motor is generally 12, 16 or 18 pieces, its corresponding stator slot number is 36, 48 slot or 54. Motor in the stationary state, the rotor magnetic field lines are walking along the direction magnetic resistance minimum feature, so the location of the rotor magnet steel the pause just for stator slot salient pole position. Magnetic steel does not stop in the position of the stator slot heart, so that the relative position of the rotor and stator is only 36, 48 species or 54 kinds of the limited number of positions. So the smallest magnetic pull Angle of brushless motor is 360/36 & deg; 360/48° Or 360/54 & deg; 。
brushless motor hall unit 5 root fuses, respectively is hall element of public power, public power li-ion hall, A phase output, the output phase B hall hall and C phase output. We can take advantage of the brushless controller (60°Or 120 & deg; )5 root hall fuses, brushless motor hall element of positive and negative power connected and the lead to the rest of the A, B, C three phase sensor lead, any meet in the hall signals to the leads of the terminal controller. Turn on the controller power supply, by the controller to power a hall element, can detect the brushless motor phase Angle. Method is as follows: the multimeter + 20 v dc voltage blocking,

electric motor

and the electric motor black pens and ground wire, red pens and measured voltage situation of three fuses, record the three fuses in the high and low voltage. Slight rotation motor, make motor turns a minimum Angle of magnetic force, once again, measure and record the 3 root lead high and low voltage, so measurement record 6 times. We use 1 high potential, represented by 0 means low potential, so & ndash; —
if it is 60 & deg; Brushless motor, continuous rotation 6 minimum Angle of magnetic force, then measure the hall of true value signal should be: 100, 110, 111, 011, 001, 000. Adjust the three hall element lead pin order, let the true value of the true value of the signal in strict accordance with the above order is changed, so for 60 & deg; Brushless motor of A, B, C three phase is judgment came out.
if it is 120 & deg; Brushless motor, continuous rotation 6 minimum Angle of magnetic force, measure the hall of the true signal should be in accordance with the 100, 110, 010, 011, 001, 101, the law of change, such a hall component lead electricity phase sequence is judgment came out.
if you want to quickly detect brushless motor is 60 & deg; Or 120 & deg; , use multimeter + 20 v dc voltage, and the black pens and ground wire, red pens and the voltage measured three leads, and in three lines have voltage or determine when no voltage is 60 & deg; Motor, otherwise it is 120 & deg;
3, brushless motor wiring method. Brushless motor coil fuses three root, hall 5 root, lead the eight root must lead and controller corresponding leads one to one correspondence, or machine can't normal rotation.
tell commonly, 60 & deg; And 120 & deg; Phase Angle of the brushless motor, and at the same time has to be 60 & deg; And 120 & deg; Phase Angle of the brushless motor controller to drive, two phase Angle controller cannot direct swaps. 60°Phase Angle of the brushless motor with 60 & deg; 8 lines phase Angle controller is connected to the correct connection of two kinds, a kind of forward, a kind of inversion.
for 120 & deg; Phase Angle of the brushless motor, by adjusting the phase sequence and hall coil lead wire of the phase sequence, motor 8 lines connected to the controller of correct connection can have six, three kinds of connection motor forward, three kinds of connection motor reversal.
if the inversion of brushless motor, brushless controller and brushless motor phase Angle is match, we can turn this motor to adjust the: brushless motors and brushless controller hall leads A and C exchange connection; At the same time the brushless motor and brushless controller of main line A and B exchange connection.
electric bicycle generally can be divided into three kinds. 1, dc motor, and both the motor, the two lead, external PWM controller. 2, the ac wheel motors, with and without hall of hall sensor, more than three lead, an external variable frequency controller. 3, dc brushless hub motors, containing electronic commutator, two lead. External PWM controller. Be sure to distinguish, not to be confused.

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