Brake unit suppliers remind you that frequency converters are becoming increasingly popular in daily industrial control operations, and brake units play an indispensable role in the use of frequency converters
1. The braking unit on the frequency converter is used to burn electrical energy;
2. When an asynchronous motor operates in the power generation braking state, the electrical energy converted from the mechanical energy of the system accumulates in the DC part of the frequency converter, and the voltage of the DC part will rise, so it must be burned off;
3. If the braking resistor burns out, either the motor loses braking or the frequency converter is overvoltage;
4. When asynchronous motors operate at power frequency, they can freely switch between electric and power generation, with variable frequency speed regulation, which prevents the energy feedback channel for motor power generation and braking;
5. That is to say, without a frequency converter, the energy generated by power generation and braking will automatically feedback to the grid, which is very energy-saving! 1. All motors, including generators, motors, and transformers, are reversible; 2. The generator is connected to the power grid and can operate electrically; 3. Electric motors can generate electricity and operate on the power grid; 4. You think it's strange, not strange, many people don't know this principle! 1. The working frequency of motors in our country is 50HZ; 2. The working frequency of motors in foreign countries is 60Hz; 3. According to some people's theoretical calculations, the working frequency of motors in our country is 10Hz lower, so using motors from our country can save electricity???!!! 4. The purpose of a frequency converter is to design and manufacture speed control for asynchronous motors; 5. Using a frequency converter to speed asynchronous motors, as the efficiency of the frequency converter is less than 80%, the overall system efficiency will decrease by 20%, resulting in increased power consumption rather than energy savings;
6. In order to meet the requirements of the process, asynchronous motor variable frequency speed regulation comes at the cost of decreased efficiency;