FTS series 5kw 6kw pure sine wave hybrid solar inverter

The main function of the photovoltaic inverter is to convert the direct current output by the photovoltaic cells into alternating current. Generally, it is mainly composed of two parts: the main circuit and the control circuit. This is because the output AC voltage generally required is higher than the photovoltaic voltage, so a front-stage boost circuit is required. That is to say, the main circuit of the inverter is composed of two-level circuits combined.

In the inverter system, according to the form of the DC power supply, it can be divided into two types: voltage source inverter and current source inverter. , convenient control, easy to understand and other advantages, it is widely used in small and medium power inverter systems. Voltage-type single-phase inverter circuits can be push-pull or bridge-type, and the latter is more widely used. The bridge circuit can be divided into half-bridge and full-bridge. The working principles are similar but slightly different. The half-bridge circuit has a simple structure, and the full-bridge circuit is slightly complicated and has a large conversion capacity.

Using PWM control, the narrow pulse with changing width is used as the driving signal to control the on-off of the switch, which is called a single-phase PWM inverter circuit. The theoretical basis of PWM technology is the area equivalent principle, that is, when narrow pulses with different shapes but the same area are added to the linear inertia link, the output effect is basically the same.

pure sine wave hybrid inverter