{"id":6128,"date":"2023-12-04T14:26:11","date_gmt":"2023-12-04T14:26:11","guid":{"rendered":"https:\/\/faradyi.com\/?p=6128"},"modified":"2023-12-04T14:32:45","modified_gmt":"2023-12-04T14:32:45","slug":"analysis-of-the-formula-for-calculating-commutation-noise-frequency-in-brushless-motors","status":"publish","type":"post","link":"https:\/\/faradyi.com\/ko\/analysis-of-the-formula-for-calculating-commutation-noise-frequency-in-brushless-motors\/","title":{"rendered":"Analysis of the Formula for Calculating Commutation Noise Frequency in Brushless Motors"},"content":{"rendered":"
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This article provides a brief analysis of the formula for calculating commutation noise frequency in brushless motors. Brushless motors operate in six different states, denoted by 1 and 0, representing the direction of current flow in the three-phase winding\u20141 for positive and 0 for negative. Positive current flows from the first end to the last end of the winding, while negative current flows from the last end to the first end.<\/p>\n

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A single motor unit of a brushless motor (either the stator or rotor with one pair of poles) exhibits six operational states within one cycle. Transitioning between adjacent states generates torque pulsations known as commutation torque ripple, affecting both the stator and rotor. As a brushless motor typically has four pairs of poles, there are a total of 4×6=24 operational states in one cycle. Hence, the formula for calculating the commutation torque ripple frequency (referred to as the commutation frequency) is derived as follows:<\/p>\n

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where:<\/p>\n