Low EMI motor driver
A motor driver and drive circuit technology, applied in the direction of motor vibration control, AC motor control, electrical components, etc., can solve problems such as motor instability, electronic equipment and personnel hazards, equipment and personnel damage, etc., to achieve structural stability and hazards Small, less heat dissipation effect
Inactive Publication Date: 2015-07-08
浙江格兰菲德电子科技有限公司
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Problems solved by technology
[0002]The driver of the motor will generate EMI (electromagnetic interference) when it is working, which will cause certain harm to the surrounding electronic equipment and personnel, especially the instability of the motor during work It is very easy to form super strong EMI (electromagnetic interference) and cause great damage to equipment and personnel. The existing motor drives have the above problems, and a motor with more stable operation and low EMI is needed. driver
Method used
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[0013] The following specific examples are only explanations of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.
[0014] Examples such as figure 1 , 2 , Shown in 3, a kind of low EMI motor driver comprises a drive circuit, and the drive circuit includes a motor coil 1, an EMI sensor 2 placed on a part of the motor driver by the motor coil 1, and the output end of the sensor circuit of the EMI sensor 2 is connected to The input end of a time domain frequency domain conversion circuit 3, the output end of the time domain frequency domain conversion circuit 3 is connected to the input end of a subtraction circuit 4, the input end of the described subtraction circuit 4 is also connected with a ...
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The invention relates to the technical field of motor drivers, in particular to a low EMI motor driver. The low EMI motor driver comprises a driving circuit which comprises a motor coil and an EMI sensor which is arranged on the portion, near the motor coil part, of the motor driver, an output end of a sensor circuit of the EMI sensor is connected to an input end of a time domain-frequency domain transfer circuit, an output end of the time domain-frequency domain transfer circuit is connected to an input end of a subtract circuit, the input end of the subtract circuit is further connected with an output end of a preset spectrum circuit, an output end of the subtract circuit is connected to an input end of an integral circuit, an output end of the integral circuit is connected to an input end of a frequency jitter circuit, the input end of the frequency jitter circuit is further connected with an output end of a PWM circuit, an output end of the frequency jitter circuit is connected to an input end of an H-bridge driving circuit, an output end of the H-bridge circuit is connected to an input end of another H-bridge circuit, and an output end of the H-bridge circuit is connected to the motor coil. According to the low EMI motor driver, the operation is stable, the energy consumption is less, and the damage is small.
Description
technical field [0001] The invention relates to the technical field of motor drivers, in particular to a low EMI motor driver. Background technique [0002] The driver of the motor will generate EMI (electromagnetic interference) when it is working, which will cause certain harm to the surrounding electronic equipment and personnel, especially the instability of the motor during work, which is very easy to form super strong EMI (electromagnetic interference) and damage the Equipment and personnel are greatly damaged, and the above-mentioned problems exist in existing motor drivers, and a motor driver with more stable operation and lower EMI is needed. Contents of the invention [0003] An object of the present invention is to provide a low EMI motor driver with stable operation, low energy consumption and low hazard. [0004] The above-mentioned technical purpose of the present invention is achieved by the following technical scheme: a kind of low EMI motor driver, compri...
Claims
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IPC IPC(8): H02P23/04H02P25/16H02P27/04
Inventor 奚剑雄杨少东
Owner 浙江格兰菲德电子科技有限公司