Technical FAQs 4

What is a SPWM full-bridge inverter?

The unipolar sinusoidal pulse width modulation (SPWM) full-bridge inverter brings high-frequency common-mode voltage, which restricts its application in transformerless photovoltaic grid-connected inverter.

What is a full-bridge inverter?

The full-bridge inverters include DC-decoupling transformerless inverters , , , AC-decoupling transformerless inverters , , , , , and NPC transformerless inverters , , , , , , , , , , as shown in Figs. 3 (b)- (d), respectively. Fig. 3.

Can a full-bridge inverter reduce high-frequency common-mode voltage?

To solve this problem, an improved full-bridge structure with two switches and a capacitor divider has been proposed, which guarantees that freewheel path is clamped to half of input voltage in freewheel period. Sequentially, the high-frequency common-mode voltage has been avoided in unipolar SPWM full-bridge inverter.

What is the control design of a grid connected inverter?

The control design of this type of inverter may be challenging as several algorithms are required to run the inverter. This reference design uses the C2000 microcontroller (MCU) family of devices to implement control of a grid connected inverter with output current control.

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Full-bridge grid-connected inverter

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