Inverter is an electrical energy control device that uses the on-off action of power semiconductor devices to transform an industrial frequency power supply to another frequency. The inverter is mainly composed of rectifier (AC to DC), filter, inverter (DC to AC), brake unit, drive unit, detection unit microprocessor unit, etc.
The inverter is mainly composed of rectifier (AC to DC), filter, inverter (DC to AC), brake unit, drive unit, detection unit and microprocessor unit. In addition, the inverter has many protection functions, such as over-current, over-voltage, overload protection and so on.
1, Main circuit
The main circuit is the power conversion part that provides voltage and frequency regulation power to the asynchronous motor. The main circuit of the inverter can be broadly divided into two categories: voltage type is the inverter that converts the DC of the voltage source into AC, and the filter of the DC circuit is capacitor.
2, Rectifier
A large number of diode converters are used, which convert the industrial frequency power supply to DC power. Two sets of transistor converters are also available to form a reversible converter, which can perform regenerative operation due to its reversible power direction.
3, Flat wave loop
The DC voltage after rectification of the rectifier contains pulsating voltage at 6 times the frequency of the power supply, and in addition the pulsating current generated by the inverter causes the DC voltage to vary. To suppress the voltage fluctuation, inductors and capacitors are used to absorb the pulsating voltage (current).
4, Inverter
In contrast to a rectifier, an inverter converts DC power to AC power at the required frequency, and a 3-phase AC output can be obtained by turning on and off six switching devices at a determined time. As an example, the switching time and voltage waveform of a voltage pwm inverter are shown.
The main purpose is to adjust the power of the motor and achieve variable speed operation of the motor in order to achieve power saving. At the same time the role of inverter can reduce the power line voltage fluctuations, because the voltage drop will lead to voltage sensitive equipment in the same power supply network fault tripping or abnormal work. After adopting the inverter, the role of the inverter can gradually start at zero frequency and zero voltage, which can eliminate the voltage drop to the maximum extent and play a greater advantage.
1, Steel: Rolling mill, roller conveyor, fan, pump, crane, ladle car, converter tilting, etc.
2, Rolling Steel Making Line: Wire drawing machine, winding machine, blower, pump, lifting machine, fixed length shearing, automatic feeding.
3, Electricity: Boiler drum blower, feed pump, centrifugal mixer, conveyor belt, water raising power station, flywheel, etc.
4, Oil: Oil transfer pumps, electric submersible pumps, injection pumps, oil pumping machines, etc.
5, Paper Industry: Paper machine, pump, shredder, fan, mixer, blower, etc.ge text with an image to give focus to your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.
Energy Saving:
The inverter can achieve precise control of the motor by controlling the speed and current of the motor, thus reducing the running power of the motor and achieving the purpose of energy saving and emission reduction.
Precise Control:
The inverter can achieve precise control of the motor, including control of motor speed, current, voltage and other parameters, so as to meet different operating requirements.
Widely Used:
Inverter can be widely used in industry, construction, electric power and other fields to control various types of motors, including AC motors, DC motors, stepper motors, etc.
High Efficiency And Stability:
The inverter has the characteristics of high efficiency and stability, which can output variable frequency and variable voltage AC power stably and ensure the normal operation of the motor.
High Reliability:
The inverter has high reliability and stability, and can improve the reliability and safety of the equipment through automatic protection and fault diagnosis.
High Degree of Automation:
The inverter can be integrated with various types of automatic control systems to achieve a high degree of automation in control and management, improving production efficiency and operational effectiveness.
In summary, inverter has the characteristics of energy saving, precise control, wide application, high efficiency and stability, high reliability and high degree of automation, which is widely used in various fields and has an important role in improving the efficiency of equipment, reducing energy consumption and protecting the environment.
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