1500v photovoltaic inverter design diagram

What is a 1500V PV system?

It simply defines that the withstand voltages of cables, converters, inverters and other components used in PV systems. PV system voltages are increasing from 1000V to 1500V. The main advantages of 1500V systems is less costs saving and higher efficiency over 1000V system.

What is the maximum DC voltage for a PV module?

Although most PV modules, inverters and combiner boxes are rated to 1000V dc maximum, the maximum dc voltage in IEC standards for low voltage equipment is 1500V. This 50% increase in dc voltage will allow a reduction in the dc current, which will reduce the ohmic losses considerably.

What voltage does a 2L solar inverter use?

For the standard 2L topology, the full system operating voltage in a solar central inverter between DC (+) and DC (-) is given with VDC=1500 V. Figure 1 shows the IGBT turn-off event of the FF1800R23IE7 in such a 2L setup with VDC=1500 V, room temperature and with a collector current of IC=1800 A.

What is the difference between 1000v and 1500V rated inverters?

The compared inverters have the same dimensions and therefore the same floor space and volume. Comparing the power density, it can be seen that the 1500V rated inverter has 1.44 times more power than the 1000V rated inverter (2.3MW compared to 1.67MW). Thus, the power density in terms of kW/m3 increases 1.38 times for the 1500V rated inverter.

What are the features of a 1500vdc PV system?

They have four main features as follows: 200-1500VDC ultra-wide input voltage A trend of PV industry is that 1500VDC system will be in place of today´s standard 1000VDC system, which enables 50% longer strings and lowers the costs with fewer combiner boxes, less wiring and trenching, and less labor.

How efficient is a 1500vdc inverter?

Efficiency for the 1500Vdc inverter was obtained for both the NPC configuration and the NPS configuration. Simulations were done at 800V dc and 550V ac, and results are depicted in Fig. 6. The inverter using NPS bridge configuration has con-siderably better efficiency than the NPC configuration.