What is a low voltage ride through control strategy?

A novel low voltage ride through control strategy with variable power tracking trajectory is proposed. The voltage fall amplitude is controlled by feedforward, and the tracking trajectory of power point is adjusted to realize the real-time change of the photoelectric cell voltage.

What is the output voltage of a PV inverter?

It is seen that the inverter is operating smoothly during the normal operating condition and the output voltage of 796.4 V power of 1504 kW (approximate) from PV power plant as well as grid parameters, i.e. grid voltage of 33 kV and grid power of 1 MW are also maintaining normally.

Can fault ride-through control reduce amplitude of PV inverter output current?

Till date, some of the existing fault ride-through control studies focus on reducing the amplitude of PV inverter output current and dc-link over-voltage as well as protecting the inverter during voltage dip.

Can inverter control improve LVRT function of PV system?

By sending a certain amount of wattless power according to different voltage drop amplitudes, the improved inverter control strategy can support the grid voltage recovery. The simulation results indicate that the control in this paper can realize the LVRT function of PV system, and improve the stability and economy of the system. 2.

How do inverters work under normal grid voltage?

Under normal grid voltage, the inverter works under the condition of unit power factor, Q ratio = 0, and the output reactive power is 0 at this time; During the voltage drop, it is necessary to provide reactive energy for grid voltage recovery Q ratio. The inverter can output the reactive current according to (3).

Does instantaneous power theory provide a low-voltage ride-through technique for large-scale photovoltaic converters?

This paper presents a low-voltage ride-through technique for large-scale grid tied photovoltaic converters using instantaneous power theory.