太阳能电池板成本的持续下降,加上全球日益严格的零碳法规,正在加速太阳能发电在住宅(<10 kW)、商业(20 kW - 350 kW)和公用事业(兆瓦级)市场的应用。太阳能逆变器是每个光伏(PV)系统的核心,它将可变的直流电能转换成与电网兼容的交流电,因此对系统的效率、可靠性和安全性提出了严苛的要求。为了在更高功率水平上满足这些要求,安森美提供升压和逆变器功率集成模块(PIM),简化系统设计的同时提高功率密度、散热性能和可制造性。采用T2PAK顶部散热封装的EliteSiC MOSFET进一步增强了这些解决方案的性能,可直接向系统散热片有效排热,降低PCB热应力,并支持紧凑型高功率逆变器架构中更高的开关性能。这些太阳能逆变器解决方案专为支持全球认证要求而设计,符合UL 1741 SB、IEEE 1547-2018、IEC 62109-1/-2 和IEC 61000-6-x等主要并网、安全和EMC标准。
安森美的工业产品组合中提供广泛的栅极驱动器、传感、控制和外围功率器件生态系统,对基于碳化硅的高功率解决方案和IGBT解决方案进行了补充,这些器件是电网接口电子设备的关键基础。对于住宅应用,我们的氮化镓解决方案为微型逆变器提供了一个紧凑、高效的选择,在空间受限的面板级设计中支持更高的开关频率和更小的磁体。这些技术的结合能够实现可扩展、可靠的太阳能逆变器平台,满足不断演进的电网标准,支持从住宅屋顶到公用事业项目的长寿命可再生能源系统。
SiC Modules contain SiC MOSFETs and SiC diodes. The boost modules are used in the DC-DC stages of solar inverters. These modules use SiC MOSFETs and SiC diodes with voltage ratings of 1200V.
A Silicon Carbide (SiC) Module is a power module that operates with Silicon Carbide semiconductors for its switch. The purpose of a SiC power module is the transformation of electrical power through switches to improve system efficiency.
The primary function of SiC Modules is to transform electrical power. Silicon Carbide offers an advantage over silicon because, with less resistance to move away from the source (due to increased efficiency), SiC devices can operate at a higher switching frequency. A SiC based system is also more compact and lightweight than a silicon solution, allowing for smaller designs. Therefore, SiC devices are the ideal solution for situations where you want to increase efficiency and improve your thermal management.
Si/SiC Hybrid Modules contain IGBTs, silicon diodes and SiC diodes. They are used in the DC-AC stages of solar inverters, energy storage systems and uninterruptible power supplies.
Hybrid Si/SiC (Silicon/Silicon Carbide) modules are integrated IGBT power modules with high power density. They have lower switching losses than nonhybrid modules, and they can also work at higher temperatures than other types of semiconductors.
Si/SiC hybrid modules have several uses including being used in high-power applications that need low losses. They may also be used in higher temperature environments than comparable Si modules. For systems requiring high-frequency switching, Si/SiC hybrid modules provide better efficiency.
Our SiC MOSFETs are designed to be fast and rugged and include system benefits from high efficiency to reduced system size and cost. MOSFETs are metal–oxide–semiconductor field-effect transistors with insulated gates. These silicon carbide MOSFETs have a higher blocking voltage and higher thermal conductivity than silicon MOSFETs, despite having similar design elements. SiC power devices also have a lower state resistance and 10 times the breakdown strength of regular silicon. In general, Systems with SiC MOSFETs have better performance and increased efficiency when compared to MOSFETs made with silicon material.
There are many advantages to choosing SiC MOSFETs over silicon MOSFETs, such as higher switching frequencies. High-temperature development is also not a concern when using SiC MOSFET modules because these devices can operate efficiently even in high heat. Additionally, with SiC MOSFETs, you benefit from a more compact product size because all components (inductors, filters, etc.) are smaller.
在高效率和高频率设计中,碳化硅是首选,而IGBT仍适用于大电流或对成本敏感的系统。而混合方案将两者结合起来,从而平衡效率、热性能和系统成本。
太阳能逆变器通常包括一个用于MPPT和电压调节的DC-DC升压级以及一个用于并网功率转换的DC-AC逆变器级。辅助模块包括传感、隔离、保护和EMI滤波。
MPPT通常用于DC-DC升压级,以调整工作电压和电流,以最大限度地提高面板输出。常见的实现方式是采用两级或三级式升压拓扑结构,配合快速电流检测和数字控制。
功率模块将开关、二极管和热通路集成到单个封装中,能够简化布局、改善热性能、提高可靠性并缩短开发时间,尤其适用于中高功率逆变器设计。
因为它能提供更高的直流母线电压,降低电流、布线损耗和系统成本,同时每个逆变器具备更高的功率吞吐量。因此,1500V架构被广泛应用于商业和公用事业规模的太阳能装置中。
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