1. When the motor is decelerating and reversing under the action of external force (including being dragged), the motor runs in the power generation state, and the energy is fed back to the DC loop to increase the bus voltage;
2. When the DC voltage reaches the state in which the brake unit is on, the power tube of the brake unit is turned on, and the current flows through the brake resistor;
3. The braking resistor converts the electric energy into heat energy and dissipates it, the motor speed decreases, and the bus voltage also decreases;
4. When the bus voltage drops to the braking unit turn-off value, the power tube of the braking unit is turned off, and no current flows through the braking resistor;
5. Sampling the bus voltage value, the brake unit repeats the ON/OFF process, and balances the bus voltage to make the system operate normally.
With the improvement of people's quality of life, more and more people will choose to buy 3D projectors at home, which can be used to play movies on weekends and release work pressure.
advantage:
a. Compared with the traditional Office Projector, the internal structure of the home 3D projector is simpler and the volume is much smaller, which is convenient to move and carry.
b. It can bring a better viewing effect to the user, and its large screen can bring a certain visual impact to the user.
c. Compared with traditional projectors, home 3D projectors have more advantages in the color of the picture, which can reach 120% of the NTSC color gamut, and the colors are rich and diverse.
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Shenzhen Happybate Trading Co.,LTD , https://www.happybateprojector.com