Anti-electromagnetic interference device and anti-electromagnetic interference method for high-speed direct current brushless motor
A brushless DC motor, anti-electromagnetic interference technology, applied in the direction of suppressing electromagnetic interference, can solve problems such as loss, failure, instability, etc., to achieve the effect of increased reliability, reasonable design and high reliability
Inactive Publication Date: 2018-10-16
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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Problems solved by technology
[0002] During the operation of high-speed brushless DC motors, the ability to resist electromagnetic interference is essential for its safe operation. Once the motor is subjected to strong electromagnetic interference during high-speed rotation, it will become unstable to a certain extent, resulting in failure, resulting in huge losses
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Embodiment 1
[0043] The anti-electromagnetic interference device of the present invention resists electromagnetic interference by cooperating with the multilayer metal boxes of the inner shielding mechanism and the outer shielding mechanism.
[0044] This embodiment takes three sets of motor windings as an example, and the number of layers of the metal box is three.
[0045] Such as figure 1 As shown, the inner shielding mechanism is a structure composed of electrical components to filter the endogenous input electromagnetic interference from the power supply.
[0046] The power supply A is connected in series with the resistor R1, and the capacitor C1 is connected in series with the bottom line and the motor winding U in parallel. Resistor R1 is used for voltage division, and the current of this circuit is adjusted to be within the rated current. Capacitor C1 is connected to ground in series to filter input electromagnetic interference from entering motor winding U. The other two groups...
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The invention provides an anti-electromagnetic interference device and anti-electromagnetic interference method for a high-speed direct current brushless motor, which comprises an inner shielding mechanism and an outer shielding mechanism; the inner shielding mechanism includes an electrical element group which is sequentially connected with each motor winding, the electrical element group comprises a power supply, a resistor in series connection with the power supply, a capacitor connected in parallel with the motor winding, and a resistor in series connection with the capacitor; the outer shielding mechanism is composed of a plurality layers of metal boxes which are sequentially sleeved, and each layer of metal box is connected with another through a lead and each layer of metal box is grounded. By increasing the mutual matching of an inner shielding circuit and an outer shielding metal structure to resist electromagnetic interference, the defect that a prior high-speed direct current brushless motor is easily interfered by electromagnetic interference is changed, and the endogenous input electromagnetic interference is shielded by the internal shielding circuit, the external shielding metal structure shields the exogenous input electromagnetic interference so that the reliability of smooth operation of the high-speed direct current brushless motor is greatly increased; the method is simple and feasible, the economical efficiency is good, and the reliability is high.
Description
technical field [0001] The invention belongs to an anti-electromagnetic interference device and an anti-electromagnetic interference method for a motor, in particular to an anti-electromagnetic interference device and an anti-electromagnetic interference method for a high-speed DC brushless motor. Background technique [0002] During the operation of high-speed brushless DC motors, the ability to resist electromagnetic interference is essential for its safe operation. Once the motor is subjected to strong electromagnetic interference during high-speed rotation, it will be unstable to a certain extent, resulting in failure, resulting in huge losses. Therefore, there is an urgent need to provide a high-speed brushless DC motor anti-electromagnetic interference device and method to fill the vacancy in anti-electron radiation. Contents of the invention [0003] The present invention is proposed to overcome the shortcomings of the prior art, and its purpose is to provide an an...
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IPC IPC(8): H02K11/02
Inventor 杨鹏丰向阳王飞
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND