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 a 1500V rated inverter?

This 1500V rated inverter uses the NPS three-level inverter shown in Fig. 2b. Switches Q1 and Q4 are rated at 1700V, so that Q1 and Q4 can withstand up to 1500V each. Q2 and Q3 are rated at 1200V. The NPS type offers the advantage of less conduction losses and a simpler configuration than other three-level topologies.

Do PV inverters need low voltage isolated power?

However, there is an area in the system that requires attention; PV combiners and inverters need low voltage isolated power for monitoring and control derived from the 1,500-V line and small dc-dc converters that operate at these levels are not common.

Do PV panels need OV II insulation?

As in all safety standards, insulation requirements depend on the system voltage, installation over-voltage (OV) category and pollution degree (PD) of the environment. For PV systems with a 1,500-Vdc bus, OV II is used for the PV panel circuits with minimum impulse withstand of 6,000 V.

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.

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.