* Question
| Classification of power electronics |
* Answer
| According to the control capability of the device, it can be divided into the following three categories: semi-controlled devices: Thyristor SCR and most of its derivatives are characterized in that the control electrode can only control the conduction of the device and cannot control the shutdown.Fully controlled devices: IGBT, MOSFET, GTO, GTR are characterized by: the control electrode can control the device to turn on and off.Such as SCR, GTR, GTO voltage-driven type – conduction or shutdown control can be achieved only by applying a certain voltage signal between the control terminal and the common terminal, the essence of which is by the voltage applied to the control terminal.A controllable electric field is generated between the two main circuit terminals to change the magnitude of the current flowing through the device and the on-off state.Such as SCR, GTR, GTO composite devices – devices that are a mixture of unipolar devices and bipolar devices.Heat dissipation design or installation of heat sinks is generally considered when working. |
COMMENTS