Katek, a German PV inverter producer, says its 4.6 kW coolcept fleX inverter options silicon carbide (SiC) semiconductors from US-based Navitas Semiconductor. It’s smaller and weighs lower than non-SiC fashions.
Katek Memmingen GmbH says it’s now manufacturing its 4.6 kW coolcept fleX three-phase inverter with SiC semiconductors from US-based Navitas Semiconductor.
Silicon carbide-based inverters are recognized to have greater energy densities, with much less want for cooling and decrease total system prices than conventional inverters. Nevertheless, defects on the interface between the silicon carbide and the insulating silicon dioxide materials can nonetheless symbolize a problem for such units.
“Navitas’ GeneSiC energy machine, primarily based on trench-assisted planar-gate SiC MOSFET expertise, can function at excessive temperatures and excessive speeds, leading to as much as 25 C decrease case temperatures and as much as [three times] longer life than competing SiC merchandise,” the 2 corporations stated in a joint assertion. “Attributable to their documented 100% confirmed avalanche functionality, 30% greater short-circuit face up to time, and fixed threshold voltage for easy uniformity, GeneSiC MOSFETs are appropriate for high-power and quick time-to-market functions.”
The German PV inverter producer says that the 4.6 kW coolcept fleX inverter now contains 16 SiC MOSFETs within the mannequin GeneSiC G3R75MT12.
“These 1,200 V, 75 mΩ-rated units are organized in a two-level converter with bi-directional enhance converters and an H4-topology for AC voltage output,” stated the corporate.
The product sheet reveals that coolcept fleX merchandise with out SiC semiconductors have an effectivity of 98.0% and European efficiencies from 97.0% to 98.0%. They measured 399 mm x 657 mm x 222 mm and weighs 12 kg. they has an MPP tracker, with a most enter energy of 6.1 kW per tracker.
The utmost enter voltage is 1,000 V and the MPP voltage vary is between 250 V and 800 V. The system additionally options a safety with an IP65 mark and a cooling system primarily based on a managed fan.
“By decreasing the dimensions and weight of the passive elements as a result of elevated switching frequency, the Katek unit outperforms older silicon-based inverters by way of measurement and weight. ours,” stated the producer.
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