Huasun Energy’s latest PV module achieves a power and efficiency gain of up to 20 W and 0.66 percentage points, respectively
It features a shorter creepage distance compared to standard half-cell-based counterparts
Currently, these modules are in mass production at the company’s factory
Heterojunction manufacturer Huasun Energy has launched its latest Himalaya PLUS 760 HV PV module, targeting 2,000 V DC system voltage level utility and desert-based projects.
The company emphasizes performance enhancement, safety, and system-level benefits as the key features of this product.
According to the company, this module, with dimensions of 2,384 × 1,303 × 33 mm, features 132 G12-size half-cut zero busbar (ZBB) HJT cells in dual sub-string configurations. It is rated to withstand system operating voltage (DC) of up to 2,000 V, a unique selling proposition (USP) of the product. The company states that the module’s active cell area covers up to 95.8% of the total size. This is attributable to its cell-to-cell overlapping design (‘negative space design’) while shortening the creepage distance discussed below. The company says it has achieved a power gain of up to 20 W by eliminating gaps between cells, reaching 760 W, compared to a standard half-cell-based 1,500 V PV module. Meanwhile, it enhances module efficiency by up to 0.66 percentage points, reaching 24.5%, by capturing additional insolation (W/m²), which would have been otherwise lost. While the company didn’t disclose whether this improvement is in absolute or relative terms, we assume it to be the former.
Huasun chooses butyl sealant for edge sealing between the glass and frames, given the severity of electrical hazards of DC compared to AC, and up to 33.3% higher system voltage (DC). This highly impermeable, non-hardening sealant delivers enhanced insulation from humidity and water ingress into the module, it adds. Besides ensuring safety from external environmental stressors, this sealing maintains the compression and adhesion between glass and frame edges throughout the module’s lifecycle. This, in turn, helps in maintaining the creepage distance, the shortest insulation path between the cell matrix edge and aluminum frames, which are prone to current leakage. The company leverages this advantage by adopting a shorter creepage distance than standard half-cell-based alternatives to gain active cell area.
In terms of system-level benefits, the company cites the example of a 100 MW utility project in Hami, Xinjiang, where this module reduces the balance-of-system (BOS) cost by RMB 0.1157/W and cuts foundation piles by more than 5,000 units compared to the 1,500 V standard modules.
These modules are in mass-scale production, following minor adjustments in stringer machines, the company states.
