The PV module is a DC source and will not generate electromagnetic interference itself. Some inverter manufacturers cancel the DC EMI common mode inductance in order to reduce the cost. In fact, since the switching speed of the solar inverter is very high, which will produce large common mode interference current, if there is no EMI DC common mode inductance, the interference current signal will be transmitted to the DC cable and components, then the components will produce electromagnetic interference like an antenna, impact signals of photovoltaic system surrounding, such as with the antenna television and radio equipment will be bad to work.
In order to increase the power generation, the series connected inverters are usually of two stage structure with wide input voltage range, single-phase 70-550V and three-phase 200-1000V. The first is a BOOST boost, to configure the boost inductor, the second is to configure the inverter circuit, filter inductor, boost inductor and filter inductor is power inductors, from the current perspective, power inductor ripple in the whole operating period of current is relatively large and the working temperature is high, thus the DC bias characteristics of inductive power requirements high (especially at high temperature), high temperature Bs power inductors corresponding ferrite materials (magnetic flux density) is very necessary; On the other hand, from the point of view of the loss, the loss of power inductors may account for 20~40% of the total loss of the solar inverter system, and it is necessary to reduce the power inductance iron loss.
SOROTEC SPS3117C 1 – 5KVA Inverter Solar System
1.Pure sine wave output
2.High frequency full bridge design .
3.Built-in MPPT solar charge controller
4.Cold start function
5.Selectable charging current based on applications
6.Compatible to mains voltage or generator power
7.Auto restart while AC is recovering
8.Overload and short circuit protection
9.Smart battery charger design for optimized battery performance
10.Selectable input voltage range for household appliances and personal computers
