Difference between low frequency and high frequency pure sine wave inverter
Regarding to pure sine wave inverter, there are low frequecy type and high frequency type.
But what's the difference between low frequency pure sine wave inverter and high frequency pure sine wave inverter?
How to choose a suitable power inverter for your home appliances?
Let's see the following tables, then you will know the differences and how to select.
|Low frequency pure sine wave inverter||High frequency pure sine wave inverter|
Surge power: 3 times
For example, 3000W inverter surge power is 9000W.
Duration time: 10 seconds for 9000W, the low frequency big transformer is strong enough to run the heavy load appliances on.
Surge power: 2 times
For example, 3000W inverter surge power is 6000W.
Duration time: Millisecond ofr 6000W, can not last for a long time, otherwise the MOS-FET would damage easily.
Stability: Have strong stability, load ability, sentitive load ability and overload ability and surge withstand capability.
It is not a big problem to run big motor and heavy load appliances.
|Stability: For air conditioner, pump and other heavey load appliances, high frequency pure sine wave inverter still can not handle well.|
|Efficiency: 85% - 90%||Efficiency: 90% - 95%|
|Transformer lifetime: at least 10 years||MOS-FET lifetime: 3 years|
|Charger function: Low frequency inverter's transformer is bothway, can be DC to DC, AC to DC. So that it can make battery charger function.||Charger function: High frequency inverter need to add extra charger circuit.|
|Anti Interference: Transformer is made by copper wire. It have strong anti-interference function, so that it can have continuous stable output.||Anti Interference: Transformer is high hertz, wave form will be affected easily for the appliances with high surge power.|
|Temperature: It would not be affected under 100 degrees for long time.||Temperature: When in 100 degrees, the MOS-FET's lifetime will cut in half and would burn easy because of overheat.|
|Size and weight: Because of low frequency big transformer, it's big and heavy.||Size and weight: light and small|
In a word, low ferquency pure sine wave inverter is available for sensitive load, accept generator's output and have high power factor.
High frequency pure sine wave inverter is light and small, but have limit to run appliances with motors and engines.