The inverter output sine wave filter and the single-phase variable three-phase power output AC filter reactor play an important role in the inverter system, they work together to reduce electromagnetic interference (EMI) and improve power quality.
The main function of the sine wave filter is to make the output voltage and current of the frequency converter approximate to the sine wave, thus reducing the harmonic domain variable coefficient of the motor and the motor insulation pressure. This filter helps protect the motor from damage caused by distortion of voltage waveform by reducing the generation of harmonics, simultaneity
It also helps to improve the efficiency and thermal stability of the inverter
The AC filter reactor is mainly used to compensate the charge and discharge effect of the coupling capacitance when the cable is running, so as to avoid overcurrent of the inverter. This kind of reactor ensures the normal insulation of the motor by limiting the rise rate of the output current, and also helps to reduce external conduction andradiationinterferenceInaddition, EMC filters and brake resistors/brake resistors are also commonly used accessories in inverter systems, they are used to reduce the frequency converter external conduction and radiation interference, and in the motor reduction boundary interference
Speed by consuming regenerative energy to protect the motor and reduce external interference
In summary, these accessories work together, not only help to improve the efficiency and stability of the system, but also effectively reduce electromagnetic interference, protect the normal operation of the motor and frequency converter.