1. power supply: provides power supply for power electronic converters. Active devices: electronic devices that can control the on-off of circuits, such as switches and transistors, are the core components of power electronic converters. By controlling the on-off state of the switch, the voltage and current in the circuit can be adjusted and controlled.
2. Passive devices refer to electronic components that can achieve certain functions without external power supply, such as resistors, capacitors and inductors. , which plays the role of filtering, decoupling and energy storage in power electronic converter.
3. In addition, according to the different uses of power electronic converters, they can be divided into rectifier, inverter, chopper and other different types, and their structural components are also different. Rectifier: an electronic device that converts alternating current into direct current. Its structure mainly includes input circuit, rectifier main circuit and output circuit.
4. Inverter: an electronic device that converts direct current into alternating current. Its structure mainly includes input circuit, inverter main circuit and output circuit. Chopper: an electronic device that adjusts the current amplitude in the circuit by changing the on-off state of the switch tube. Its structure mainly includes input circuit, chopper main circuit and output circuit.
Application of power electronic converter
1. motor control: power electronic converters can be used to control the speed and direction of motors, and are widely used in industrial automation, electric vehicles and other fields. Power grid dispatching: Power electronic converter can be used to realize power grid dispatching and control, and improve the stability and reliability of power grid.
2. Data center: Data center needs a lot of electricity to maintain its normal operation, and power electronic converters can be used to realize energy-saving and efficient operation of data center. Rail Transit: Power electronic converter can be used to realize traction power supply and auxiliary power supply of rail transit, and improve the operation efficiency and safety of rail transit.
3. Smart home: The power electronic converter can be used to realize the energy management and control of smart home and improve the comfort and energy efficiency of home. Medical equipment: Medical equipment needs stable power supply, and power electronic converter can be used to realize reliable power supply and energy-saving operation of medical equipment.
4. Aerospace: Power electronic converters can be used to realize the energy supply and control system in the aerospace field and improve the safety and reliability of aerospace vehicles.