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Chinese manufacturer TBEA has introduced a 500 kW string inverter intended for large-scale solar installations and hybrid solar-storage projects, according to a report from pv magazine. The product, designated TS500KTL-HV-C1, is engineered around standardized photovoltaic sub-arrays of 5 MW and 5.5 MW with the goal of lowering balance-of-system expenses.
This inverter employs a high-voltage design capable of handling up to 1,600 volts direct current and 1,000 volts alternating current. TBEA states this configuration can decrease cable requirements, reduce energy losses in transmission lines, and cut down on the total number of components when compared to older 330 kW-class alternatives. The company indicates these features can lead to lower initial investment and simpler installation processes for major ground-mounted solar plants.
At its core, the device utilizes third-generation silicon carbide power semiconductors. Published specifications indicate a peak efficiency rating of 99.0%, with a European efficiency of 98.8%. The design also achieves higher power density within a compact form. The unit is rated for operation in extreme temperatures from -40 to 70 degrees Celsius and can function at elevations up to 5,000 meters without a reduction in output.
A key focus of the design is enhanced grid interaction. The inverter uses voltage-source control technology with a response time under 20 milliseconds. It is capable of reactive power compensation and active support for voltage and frequency stability, functions that extend its role beyond basic power conversion. This is seen as particularly valuable for areas with less robust electrical grids or systems containing a significant proportion of variable renewable power.
TBEA also markets the inverter for use in combined solar and storage facilities, where it can operate with grid-forming conversion systems to bolster overall stability and improve the use of renewable energy. Beyond large desert-based solar plants, the company suggests the model is appropriate for high-altitude regions, cold climates, coastal areas, environments with high salt mist, and sizable commercial and industrial photovoltaic setups.
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