PV DC Transformer: a key enabling technology for emerging MVDC collector networks

Our 250 kW 10 kV PV DC Solid-State-Transformer for PV applications operates silently at medium frequency (>10 kHz) and provides galvanic isolation between the PV field and the MVDC collector network.

Advanced technological bricks:

• SiC power semiconductor devices – enable high frequency operation
• Medium frequency transformer – ensures comptact size & high efficiency
• Oil insulation – provides medium voltage insulation and effective cooling

Key features:

• 99% efficiency for maximum energy transfer
• Unidirectional step-up, isolated & resistant to short circuits
• Compact design, minimising raw material usage
• Compatible with multi-MPPT