What is the loss of inverter?

Release Time: 2022-05-30
Generally about 80%. The loss of the inverter in operation: the driving loss is determined by the grid (control electrode) of the power switch. The switching loss is determined by the control mode (switching mode) of the power switch.
Switching losses are caused by the combination of voltage and current waveforms. It increases sharply with the increase of switching frequency. Therefore, if the voltage (or current) on the power switch is not zero when it is switched from on to off or from off to on. Switching loss will occur, which we call hard switching. It consists of inverter bridge, control logic and filter circuit.
Extended data:
The two parts of the inverter also adopt the widely used pulse width modulation (PWM) technology. Its core part is a PWM integrated controller, the adapter uses UC3842, and the inverter uses tl5001 chip.
The working voltage range of tl5001 is 3.6 ~ 40V. It is internally equipped with an error amplifier, a regulator, an oscillator, a PWM generator with dead time control, a low-voltage protection circuit and a short-circuit protection circuit.
The square wave inverter outputs square wave AC with poor quality, and its positive maximum value to negative maximum value are generated almost at the same time, which has a severe unstable impact on the load and the inverter itself.
At the same time, its load capacity is poor, only 40-60% of the rated load, and inductive load is not allowed. If the load is too large, the third harmonic component contained in the square wave current will increase the capacitive current flowing into the load, and seriously damage the power filter capacitor of the load.

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