Modular inverter systems add extra AC input to reduce losses

Industrial AC and DC power system provider, Unipower, has introduced the family of Bravo inverters that provide customers with an efficient and modular AC or DC power solution. The Bravo inverters offer a modular and fully scalable solution using hot-swap inverter modules at 2.5kVA 120V AC or 3kVA 230V AC.

The Bravo ECI and TSI models are compact 2U (3.5 inch or 90mm high) rackmount inverters that can be configured with up to four 2.5kVA modules totalling 10kVA in a single 2U shelf. Units can be connected in parallel to increase the overall output of the inverter system and the hot-swappable modules can also be configured with N+1 redundancy.

A particular feature of the Bravo models is that they provide extra AC input to ensure a high overall efficiency that results in a reduction of energy loss and heat dissipation, says Unipower.

Both Bravo inverter models convert 48V DC into a pure sine wave with an output of 120V AC or 230V AC. Outputs can be configured to deliver single-, dual- or three-phase AC power. According to Unipower, the Bravo ECI technology eliminates all single points of failure with full scalability up to 32 modules in parallel. Efficiency is up to 96 per cent in AC/AC conversion and above 93.5 per cent in DC/AC conversion to minimise operating costs.

Multiple Bravo ECI systems can be paralleled to reach up to 96kVA. The Bravo TSI models can scale from 2.5 to 80kVA with a minimum of three rack shelves required for three-phase operation.

The modules are designed for ease of configuration, with up to four able to mounted in a 19-inch (483mm) rackmount power shelf, with a management module. Multiple shelves can be connected in parallel and can be wired for single-phase or three-phase operation.

For enhanced system communications, Unipower offers what it claims is the industry’s first “translator” interface PCB that allows the inverters to seamlessly communicate with the existing Unipower ACX controller through the PowCom network software.

PowCom allows system communication through a local or remote PC and will automatically adjust its interface to the capabilities of the connected system, thus eliminating the need for two separate protocols.

The Bravo ECI and TSI inverters are available now.

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