For example, when 1700V class IGBT is being used in 1500V solar inverter system in 2-level or NPC2 topology, at a VCE utilization ratio over 88% the failure rate will be unacceptably high despite short exposure to such input voltage.
Using 1700 V IGBT power modules for 1500 V DC applications carries many risks for unpredicted converter failures. Instead, a newly developed 2.0 kV Class IGBT module is enabling a reliable and efficient usage of simple 2-level topology for 1500V DC renewable inverter systems.
With maximum voltage of 1500V across DC link, at the first glance it is tempting to consider using 1700V class devices in 2-level or NPC2 topologies, for maximum utilization of IGBT voltage rating for maximum possible output power at lowest cost. However, the factor of cosmic radiation induced IGBT failure must be considered .
Image used courtesy of Bodo’s Power Systems [PDF] The LV100 IGBT module housing concept is designed for parallel operation. In this evaluation, a paralleling of three modules has been considered with an achieved output power of 1800 kW. This result in a power of 600 kW per module.
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Fuji IGBT modules for solar inverter 2-Level 3-Level Fuji solution in Gate Driver Unit (GDU)
[1] Xin Hao, Kwok-wai Ma, Yong Yang, Jia Zhao, “ 1500V solar inverter at megawatts level in NPC1 topology enabled by high-density IGBT module ”, Tencon 2016 [2] …
Using 1700 V IGBT power modules for 1500 V DC applications carries many risks for unpredicted converter failures. Instead, …
With maximum voltage of 1500V across DC link, at the first glance it is tempting to consider using 1700V class devices in 2-level or NPC2 topologies, for maximum utilization of …
Fuji IGBT modules for solar inverter 2-Level 3-Level Fuji solution in Gate Driver Unit (GDU)
Summary High power 3-level central PV inverters with low inductive commutation can be realized by using half bridge IGBT modules. It has been shown that by using LV100 …
During IGBT turn-off, this inductance (Lσ) creates a voltage overshoot (V = Lσ * di/dt) that adds to the DC bus voltage. In a 1500V system, this can easily push the collector-emitter …
Their key contributions include: Power Handling: Solar inverters, particularly utility-scale ones, must process significant power levels. IGBT modules are available in voltage …
Using 1700 V IGBT power modules for 1500 V DC applications carries many risks for unpredicted converter failures. Instead, a newly developed 2.0 kV Class IGBT module is …
[1] Xin Hao, Kwok-wai Ma, Yong Yang, Jia Zhao, “ 1500V solar inverter at megawatts level in NPC1 topology enabled by high-density …
2300 V – a new IGBT voltage class for 1500 V PV central inverter Because of all these challenges in this field of applications, Infineon Technologies developed a new voltage …
In central PV inverter applications, 3-level neutral point clamp topologies based on 1200 V IGBTs are a popular approach. However, finding a suitable power module is often …
Their key contributions include: Power Handling: Solar inverters, particularly utility-scale ones, must process significant power …
A Checklist for Engineers: Key IGBT Selection Parameters Selecting the optimal IGBT module requires a methodical evaluation of several interconnected parameters found on …
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