</a>逆变器" title="逆变器">逆变器" title="逆变器">逆变器(DC/AC转换器),DC输入电压从表面上20V到28V,输出电压230Vrms 59Hz,输出功率达1000W,效率高达90%,主要用在UPS和光伏(PV)系统.本文介绍了DC/AC转换器系统框图,在PV系统应用框图,STEVAL-ISV001V1系统指标,电路图和材料清单以及所用变压器与电感技术指标,PCB布局图.

1000 W dual stage DC-AC converter demonstration board based on the STP160N75F3

This application note provides design guidelines and performance characterization of the STEVAL-ISV001V1 demonstration board.

This board implements a 1 kW dual stage DC-AC converter, suitable for use in batterypowered uninterruptible power supplies (UPS) or photovoltaic (PV) standalone systems.

The converter is fed by a low DC input voltage varying from 20 V to 28 V, and is capable of supplying up to 1 kW of output power on a single-phase AC load. These features are possible thanks to a dual stage conversion topology that includes an efficient step-up pushpull DC-DC converter, which produces a regulated high-voltage DC bus and a sinusoidal HBridge PWM inverter to generate a 50 Hz, 230 Vrms output sine wave. Other key features of the system proposed are high power density, high switching frequency and efficiency greater than 90% over a wide output load range


图1.1 kW DC-AC转换器外形图

图2.DC-AC转换器在光伏转换中的应用框图

图3.DC/AC转换器系统框图
STEVAL-ISV001V1系统指标:


图4.STEVAL-ISV001V1电路图
STEVAL-ISV001V1材料清单:


1.5 mH 2.5 A电感L4技术指标(MAGNETICA制造)

1kW 100kHz开关电源变压器TX1技术指标(MAGNETICA制造)



图5.STEVAL-ISV001V1元件布局图
详情请见:
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/CD00201961.pdf