TI TIDA－01606 10kW三相光伏并网逆变器参考设计

TI公司的TIDA-01606是基于SiC的输出功率10kW/10kVA的三相光伏并网逆变器参考设计,最大输入电压在800V DC和1000V DC,在400V AC 50/60Hz并网连接时最大输出功率10-kW/10-kVA,采用高压1200V SiC MOSFET全桥逆变器,峰值效率高达98.5%,满负荷时的输出电流的THD小于2%,主要用在太阳能串逆变器和太阳能中心逆变器.本文介绍了参考设计TIDA-01606主要特性和主要指标,框图,电源卡和栅驱动卡电路图与材料清单.
This reference design provides an overview on how toimplement a three-level, three-phase, SiC-basedDC/AC grid-tie inverter stage. A higher switchingfrequency of 50 kHz reduces the size of magnetics forthe filter design and as a result a higher power density.
SiC MOSFETs with switching loss ensures higher DCbus voltages of up to 1000 V and lower switchinglosses with a peak efficiency of 99%. This design isconfigurable to work as a two-level or three-levelinverter.
Modern commercial scale solar inverters are seeing innovation on two fronts, which lead to smaller, higherefficiency products on the market:
1. The move to higher voltage solar arrays
2. Reducing the size of the onboard magnetic
By increasing the voltage to 1000-V or 1500-V DC from the array, the current can be reduced to maintainthe same power levels. This reduction in current results in less copper and smaller power conductingdevices required in the design. The reduction in di/dt also reduces the stress on electrical components.However, sustained DC voltages of > 1 kV can be difficult to design to, or even find components that cansurvive it.
To compensate for the voltage stresses generated by high-voltage solar arrays, new topologies of solarinverters have been designed. Traditional half bridges block the full input voltage on each switchingdevice. By adding additional switched blocking and conduction components, the overall stress on thedevice can be significantly reduced. This reference design shows how to implement a three-levelconverter. Higher level converters are also possible, further increasing the voltage h...