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发明公开
CN102369655A 一种与三相无刷电动机有关的噪音降低装置 无效 - 撤回

一种与三相无刷电动机有关的噪音降低装置
摘要：
本发明的目的在于有效降低驱动三相无刷电动机时产生的噪音。公开了应用于三相无刷电动机的噪音降低装置，其中，当与U相有关的两个开关元件Q1、Q2以彼此相反的相位开通或关断时产生的相应的电流环路在垂直于基板的方向上彼此相反，当与V相有关的两个开关元件Q3、Q4以彼此相反的相位开通或关断时产生的相应的电流环路在垂直于基板的方向上彼此相反，当与W相有关的两个开关元件Q5、Q6以彼此相反的相位开通或关断时产生的相应的电流环路在垂直于基板的方向上彼此相反。
摘要（英）：

An object of the present invention is to effectively reduce noise generated when driving a three-phase brushless motor. A noise reduction arrangement applied to a three-phase brushless motor is disclosed, wherein respective current loops, which are generated when two switching elements Q1 and Q2 related to U-phase are turned on or off in reversed phase with respect to each other, are opposed to each other in a direction of the normal to a board; respective current loops, which are generated when two switching elements Q3 and Q4 related to V- phase are turned on or off in reversed phase with respect to each other, are opposed to each other in a direction of the normal to the board; and respective current loops, which are generated when two switching elements Q5 and Q6 related to W-phase are turned on or off in reversed phase with respect to each other, are opposed to each other in a direction of the normal to the board.

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