Austriamicrosystems AS8002太阳能电源逆变方案
Austriamicrosystems公司的 AS8002是太阳能电源逆变器高精度测量IC. 太阳能光伏系统(PV)中的电源逆变器常常直接连接到国家电网,注入电能,这些电能必须符合某种规范.AS8002中的12位100kSPS ADC能高精度地测量所监管的电压和电流,可编程增益放大器适合不同类型的传感器,片内的基准电压有很低的温度系数(10ppm/K). AS8002适用于PV逆变器电网监测,风能逆变器电网监测,隔离电压检测和UPS.本文介绍了AS8002主要特性,方框图, 典型应用电路图以及AS8002电源逆变器适配器板主要特性与电路图.
Power inverters in solar photovoltaic systems are often connected directly to the electricity grid in order to inject the created energy into the mains and act as an electricity supplier. This energy must comply with certain regulations that set the standard in terms of quality and safety which requires of accurate measurements.
The AS8002 is a highly accurate measurement IC that allows monitoring the generated energy with low cost shunt resistors or other sensors for the current and resistor dividers for the voltage.
This approach allows avoiding more expensive sensing devices while achieving the required accuracy for DC and AC measurements of current and voltage, as well as stability over the operating temperature range of the inverter.
The 12-bit ADC samples the voltage and current and provides their instantaneous values through an SPI interface.
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