带您了解光伏离网逆变器的那些事

按输出波形 ，逆变器可分为方波逆变器、阶梯波逆变器、正弦波逆变器。正弦波逆变器的特点是效率高，低谐波，可适用于所有类型负载，对感性或容性负载有较强的带载能力。

按拓扑结构 ，可分为高频逆变器和工频逆变器。

什么是工频逆变器？

工频逆变器 将低压直流电先通过全桥逆变电路逆变成低压交流电之后，再通过大型变压器将低压交流电升压为高压交流电。

特点：功率密度小，体积大，重量重，效率低，但是电压输入范围宽，抗干扰能力强，可靠性高，适用于恶劣环境下运行，以及对电能质量要求较高的场合。

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什么是高频逆变器？

高频逆变器 将低压直流电升压为高频率、高密度能量的高压直流电，然后再通过全桥逆变电路逆变为交流电。

特点：功率密度大，体积小，重量轻，效率高，但是电压输入范围窄，抗干扰能力较弱，可靠性低，一般适用于电动工具、日常照明等对电能质量要求不高的场合。

An inverter is a device that converts direct current (DC) to alternating current (AC) to meet the power demand of AC loads.

According to the output waveform, the inverter can be divided into square wave inverter, step wave inverter, sine wave inverter. Sine wave inverter is characterized by high efficiency, low harmonic, can be applied to all types of load, inductive or capacitive load has a strong load capacity.

According to the topology, it can be divided into high frequency inverter and power frequency inverter.

What is power frequency inverter?

The power frequency inverter first converts the low-voltage DC into low-voltage AC through the full-bridge inverter circuit, and then converts the low-voltage AC into high-voltage AC through a large transformer.

Features: small power density, large volume, heavy weight, low efficiency, but the voltage input range is wide, strong anti-interference ability, high reliability, suitable for harsh environment operation, as well as the power quality requirements of the occasion.

Recommended products: NPower series, TPower series

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What is a high frequency inverter?

The high frequency inverter converts low voltage DC into high voltage DC with high frequency and high density energy, and then converts it into alternating current through the full bridge inverter circuit.

Features: large power density, small size, light weight, high efficiency, but the voltage input range is narrow, anti-interference ability is weak, low reliability, generally suitable for power tools, daily lighting and other occasions that do not require high power quality.