Hall Angle of Three-Phase Brushless DC Motor-Xinda Motor- electric motors and EV accessories supplier|INDEX--

Hall Angle of Three-Phase Brushless DC Motor

Date：2024-10-31　　　Author：XINDA MOTOR

There are two types of brushless motors: inductive and non-inductive. Inductive means that the motor is equipped with a Hall sensor. The Hall element can provide position illusion for the brushless DC motor, allowing the three-phase brushless motor to keep the coil energized. At the same time, the magnetic lines of force passing through the magnet will generate signals, which are PWM speed regulation signals. After receiving these signals, the controller can control the rotation of the motor and realize the speed regulation function. At the same time, the Hall can also output position signals, which are what we call FG signals. The controller determines the movement position of the motor by reading these signals.

Because the three Hall sensors of the motor are generally evenly distributed, the electrical angles are 120° and 60°. This is determined by the position of the Hall sensors. If all three Hall sensors are placed in the right position, the angle will be 60°. If they are placed in the middle position, the angle will be 120°. This will affect the commutation of the motor current. When the motor rotor rotates the corresponding angle, the direction will be automatically commutated.

Hall also has positive and negative poles. If the Hall is connected incorrectly, it will cause the winding to be unable to conduct and the motor will not operate normally. More seriously, if the conduction is incorrect, it will cause a short circuit and burn out the driver, and the motor will be useless.

The following are some of the brushless DC motor slot pole numbers and corresponding Hall angles we have summarized. Of course, the most common ones are 120° and 60°; we generally recommend this solution for easy coordination with the product's main control circuit.

3 -phase BLDC Hall Angle List
Number of slots	Number of poles	Hall Angle 1	Hall Angle 2	Hall Angle 3	Hall Angle 4	Hall Angle 5	Hall Angle 6	Hall Angle 7	Hall Angle 8
3	2	120	240	480	600	840	960	1200	1320
3	4	60	120	240	300	420	480	600	660
6	4	60	120	240	300	420	480	600	660
6	8	30	60	120	150	210	240	300	330
9	4	60	120	240	300	420	480	600	660
9	6	40	80	160	200	280	320	400	440
9	8	30	60	120	150	210	240	300	330
9	10	twenty four	48	96	120	168	192	240	264
9	12	20	40	80	100	140	160	200	220
12	8	30	60	120	150	210	240	300	330
12	10	twenty four	48	96	120	168	192	240	264
12	14	17	34	69	86	120	137	171	189
12	16	15	30	60	75	105	120	150	165
15	10	twenty four	48	96	120	168	192	240	264
15	12	20	40	80	100	140	160	200	220
15	14	17	34	69	86	120	137	171	189
15	16	15	30	60	75	105	120	150	165
15	18	13	27	53	67	93	107	133	147
15	20	12	twenty four	48	60	84	96	120	132
45	46	5	120	twenty one	26	37	42

Hall Angle of Three-Phase Brushless DC Motor

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