Must see the brushless dc motor controller knowledge quiz
foshan electrical and mechanical equipment co. , LTD have collected some customers often search for brushless dc motor controller is part of the problem to solve, the following is about the brushless dc motor controller q&a: q: what is a brushless dc motor controller? A: due to the dc current controller provides directions, in order to achieve motor controller inside the direction of the coil current variations. Between the rotor and stator of brushless motor without brush and commutator. Q: why did the brushless dc motor controller has three hall? A: brushless dc motor controller in order to turn, must make the magnetic field of the stator winding and rotor magnetic field of permanent magnet always exists between certain Angle. Rotor spinning process is the rotor magnetic field direction change process, in order to make the two magnetic field Angle, to a certain extent, the stator coil magnetic field direction must be changed. So how do you know is going to change the direction of the stator magnetic field? That depends on the three hall. Can think of three hall shoulder the task of tell when to change the direction of current controller. Q: brushless dc motor controller hall power consumption is roughly range is how much? Answer: the brushless motor controller hall power consumption is roughly ranging is 6 ma - 20 ma. Q: how to realize the brushless dc motor controller phase? Answer: the brushless motor controller in the rotation, motor coil inside need alternating current direction, so as to achieve electric function continuous rotation, brushless dc motor controller to complete by controller. Q: brushless dc motor controller in how high temperature can normal work? How high the temperature of the motor can afford? Answer: if you measure the temperature of the motor controller to cover more than the environment temperature above 25 degrees, suggests that the rise of temperature of the motor controller is beyond the normal range, general motor controller temperature should be below 20 degrees. General motor controller is composed of enameled wire winding coil, the enameled wire when the temperature higher than 150 degrees because temperature is too high and fall off of the paint film and the coil short circuit. When the coil temperature above 150 degrees brushless motor controller shell of temperature at 100 degrees, so if based on its shell temperature brushless dc motor controller on the maximum temperature of 100 degrees. Q: why does any one dc brushless dc brushless motor controller and the controller can not arbitrarily connected to can normal turn up? Why pour phase sequence of the brushless dc will have said? Answer: generally brushless dc motor controller in the actual movement is such a process: turn the motor controller, rotor magnetic field direction change -- when the Angle of the stator magnetic field direction and rotor magnetic field direction to 60 degrees electrical Angle - hall signal change - forward direction of the phase line current, the stator magnetic field across 60 degrees electric Angle, the stator magnetic field direction and rotor magnetic field direction Angle is 120 degrees electric Angle, the motor controller continue to roll. Then we will see, hall has six correct state. When specific hall told controller, controller output state there is a specific phase line. So the phase sequence is to complete a task, is to make the stator power Angle is always in one direction at 60 degrees Angle step by step. In addition to the above points, a lot of a lot of knowledge and brushless dc motor controller, can focus on the mechanical and electrical, see more knowledge of brushless motor controller.