DC Motor Drive Protection Scheme
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DC Motor Drive Protection Scheme

Views: 0     Author: Site Editor     Publish Time: 2023-11-03      Origin: Site

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DC motor

A DC motor refers to a rotating electrical machine that can convert DC electrical energy into mechanical energy or mechanical energy into DC electrical energy.

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Features
  • Good starting and speed regulation performance, wide and smooth speed regulation range,
  • Strong overload capability and less affected by electromagnetic interference;
  • DC motor has good starting characteristics and speed regulation characteristics;
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Features
  •  The torque of DC motor is relatively large;
  • ·Maintenance is relatively cheap;
  • DC motor is more energy-saving and environmentally friendly than AC;

New materials for NdFeB magnet motors are widely used, and brushless motor BLDC technology has been vigorously developed. Yint Electronics conducts in-depth research to improve the stability of products and save energy and reduce consumption for our planet. Provide our complete electromagnetic compatibility solution for brushless motor electronic control!

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Part Yint Electronics' protective devices Function and standard compliance
AC to DC module
MOV
Mainly prevents power supply fluctuations and induced lightning surges
IEC61000-4-5/GB-T17626.5
NTC
Mainly protects MCU from reverse electromotive force interference and improves DC power supply ripple quality IEC61000-4-4/GB-T17626.4
High quality rectifier tube

Note: The selection of Mov and NTC needs to be selected according to the motor power and usage scenario.
         * For M7, it is important to choose devices with excellent heat dissipation and excellent VF performance.

 

Part Yint Electronics' protective devices Function and standard compliance
Driver part
TVS
1) Drive VH and GND to provide 16V or 15V power supply to prevent surges caused by motor startup and effectively protect processing chips (especially COMS process integrated circuits)
2) Vge/Vgs side Miller effect overcharge voltage suppression, static electricity suppression
FR
Anti-backflow protection for VCC and VB bootstrap circuits
SBR
Prevent the interference of series excited magnetic field or parallel excited magnetic field, reverse cut-off
IEC61000-4-4/GB-T17626.4

 

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Part Yint Electronics' protective devices Function and standard compliance
MOS FET/IGBT
Active clamp section
When the IGBT or MOSFET has an upper or lower bridge or load short circuit, the drive circuit turns off the IGBT/MOSFET and causes a voltage spike to act as an active clamp.

 Note: If the DC bus voltage is not too high, it can be completed by a single TVS. If the voltage is too high, it can be completed by multiple low-voltage IVSs connected in series. However, care should be taken to suppress the series parasitic inductance to avoid overcharging when the active clamping voltage is too high. 

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