What is a photovoltaic inverter (PVI) station?

It is based on the same best-in-class power conversion platform as our AMPS solutions, enabling greater scalability and flexibility. Hitachi Energy’s Photovoltaic Inverter (PVI) station provides you with advanced control and power capabilities that are designed to meet complex technical requirements and the most challenging grid codes.

Why do photovoltaic systems need auxiliary power supplies?

Photovoltaic systems are continually evolving to improve their efficiency and financial viability. One trend is to move to larger strings of cells giving higher dc voltages to be converted to ac voltage for the grid. Cost savings result but auxiliary power supplies for monitoring and control need to accept these higher voltages as inputs.

How a transformer is used in a PV inverter?

To step up the output voltage of the inverter to such levels, a transformer is employed at its output. This facilitates further interconnections within the PV system before supplying power to the grid. The paper sets out various parameters associated with such transformers and the key performance indicators to be considered.

Why do solar inverters need secondary-side regulation?

For solar inverters, which depend on the auxiliary power supply for powering many electronic subsystems, secondary-side regulation can help ensure the proper bias power throughout variable operating conditions. Figure 2. The UCC28750 in a flyback design A notable inclusion with the UCC28750 is a programmable FLT pin.

Why should you choose a high-voltage auxiliary power supply?

The straightforward control approach reduces overall system complexity and cost. Meeting the increasing demands for voltage, efficiency, and reliability in industrial and solar equipment, our high-voltage auxiliary power supply offers a cost-effective and high-performance solution.

How efficient are photovoltaic panels?

Photovoltaic (PV) power generation systems have always fought to justify themselves in terms of $/watt of generated power and are hampered by the initial low efficiency of the panels themselves. Currently, levels of monocrystalline cells at around 25% efficiency would be market-leading and theoretical maximum values are not much higher.