How to measure the phase angle of a brushless motor?
Answer: When the controller power is turned on and the controller supplies power to the Hall element, the phase angle of the brushless motor can be detected. The method is as follows: use the +20V DC voltage file of the universal meter, and connect the red test lead to the +5V line. The black pen measures the high and low voltages of the three leads respectively, and can be compared according to the commutation table of the 60 degree and 120 degree motor.
★Why can any DC brushless controller and DC brushless motor be able to rotate normally without being connected? Why does DC brushless have a reverse phase sequence?
Answer: Generally speaking, the DC brushless motor is a process in actual motion: the rotation of the motor---the direction of the rotor magnetic field changes---when the angle between the direction of the stator magnetic field and the direction of the rotor magnetic field reaches 60 degrees of electrical angle - ---Hall signal change----phase current direction change----the stator magnetic field crosses 60 degrees electrical angle---the angle between the stator magnetic field direction and the rotor magnetic field direction is 120 degrees electrical angle--- - The motor continues to rotate. So we understand that Hall has six correct states. When a particular Hall tells the controller, the controller has a specific phase output state. Therefore, the phase reversal sequence is to accomplish such a task, that is, the electrical angle of the stator is always stepped at an electrical angle of 60 degrees in one direction.
★What happens if a 60-degree brushless controller is used on a 120-degree brushless motor? What about the reverse?
A: It will fall to the phase loss phenomenon and cannot rotate normally. However, the controller used by Jieneng is an intelligent brushless controller that can automatically recognize the 60-degree motor or the 120-degree motor, so that it can be compatible with the two motors. Make maintenance and replacement more convenient.
★ How can DC brushless controller and DC brushless motor pour out the correct phase sequence?
Answer: The first step is to ensure that the power line and ground wire of the Hall line are inserted into the corresponding line on the controller. The three motor Hall lines and the three motor line pairs are connected to the controller in total. The simple and clumsy method is to test each state one by one. It can be carried out continuously when changing, but it must be careful and have a certain order. It should be noted that the screwing is not too big every time. If the motor does not rotate smoothly, this state is wrong. If the turning screw is too large, it will damage the controller. If there is a reversal, know the phase sequence of the controller. In the case of the controller Hall lines a, c are interchanged, click on the line A phase and B to change each other, you can turn into a forward rotation. Finally, verify that the correct method is normal when the high current is running.
★ How to control a 60 degree motor with a 120 degree brushless controller?
Answer: Add a directional line between the b-phase of the brushless motor Hall signal line and the controller sampling signal line.
