The influence of solar cell junction temperature and sunlight intensity on the output characteristics of solar cell is given by And the equivalent circuit shows […]

①Photovoltaic module and array modelSolar cell unit is the smallest unit of photovoltaic cell, its working voltage is generally only 0.5~1.0V, and the output power […]

The basic principle of a solar cell is similar to that of a diode. It can be explained by a simple PN junction. Figure 1 […]

①Design of micro grid-connected inverterThe following introduces a design example based on the series Nuozhen push-pull voltage micro-inverter. The circuit diagram is shown in Figure […]

1). Selection of EMC filter parametersIn order to prevent high-order Noo waves from entering the grid and photovoltaic cell strings, and at the same time, […]

The high-power grid-connected inverter consists of a power switch inverter bridge, DC and AC EMC filters, current sensors, grid-connected converters, AC and DC filters, and […]

Compared with the traditional two-level three-level power consumption, the sine of the voltage waveform is good, and the harmonic content is low, so the grid-connected […]

1) Topological structure of three-level inverterThree-level photovoltaic grid-connected inverters have a variety of topologies. The three main topologies are diode-clamped, independent DC power cascades and […]

In the three-level high-power grid-connected inverter, through the vector control based on the virtual flux linkage orientation, the control of the active and reactive power […]

The control structure diagram of the three-phase photovoltaic grid-connected inverter system is shown in Figure 1. The control system mainly has three parts: current Pl […]