1. What is VF controlFor asynchronous motors, in order to ensure that the motor flux and output force remain unchanged (constant torque). When the motor changes frequency, the ratio of voltage V and frequency F needs to be maintained approximately unchanged. This method is what we called constant vo

The core devices of inverters are all IGBT power semiconductor switching elements. When they are operating normally, they generate a lot of heat. If there is no fan to force cooling, its temperature-sensing head will immediately detect (IGBT) overheating and send it to the CPU with an immediate comm