PV+storage systems with Ampt generate, capture, and deliver more energy to increase project ROI.
Ampt saves on EBOS, ESS, and PCS costs on day-one to deliver the lowest cost per kWh PV+storage systems.
Ampt lowers costs and increases flexibility when adding or replacing storage, modules, and PCS components in the future.
Ampt’s patented technology allows for more modules per string to eliminate electrical BOS components and labor.
Ampt increases battery converter and inverter power densities to lower the cost per watt.
Ampt optimizers enable higher DC/AC ratios (up to 3:1) to lower capex and enable longer storage durations.
Ampt optimizers feature output current limits which reduces cable ampacity by eliminating the margin requirement for “over sun” conditions. Additionally, PV arrays with Ampt operate at a high and fixed DC bus voltage which lowers current (I=P/V). By allowing more modules per string, Ampt lowers overall electrical balance of system costs - such as cabling and combiners or cabling harnesses.
Using Ampt operates the DC bus at a higher voltage which simplifies battery conversion requirements with a 50% reduction in conversion circuitry while increasing the battery converter's power density. This reduces battery converter costs by 50%.
A PCS or inverter in Ampt Mode® is configured by the manufacturer to operate at a fixed input voltage that is closer to the maximum system voltage. This enables a higher output voltage at the same current to increase the PCS rated output power (see the example shown).
A PCS with Ampt is not constrained by ambient temperature or strings lengths. This means it can always operate at its maximum rated output voltage. For example, a PCS rated at 690 VAC that is deployed in a hot environment will not need to be derated to a voltage below 690VAC.
A PCS deployed with Ampt achieves its highest rated power at a lower cost per watt.
Higher DC ratios lower the cost of energy storage while optimally increasing storage durations. Ampt's patented technology protects the inverter so system designers can achieve higher loading ratios than can systems without Ampt to lower the total system cost.
As energy storage durations increase, the optimal DC/AC ratio also increases to result in an overall capex savings as illustrated in these graphs.
During normal operation, the optimizer maintains PV maximum power point (MPP) and operates at a fixed output voltage (e.g. 1350V) while delivering full array power to satisfy the load (grid, battery, or both). The optimizers move the array off MPP when inverter is in power control mode.
The example shown is for an inverter that has a maximum DC/AC ratio of 1.52 and a minimum MPP voltage of 850-volts (both without Ampt). With Ampt, the inverter input operates at a fixed high voltage of 1350-volts to achieve a 3.0 loading ratio.
Ampt technology provides flexible options to increase storage capacity and/or duration over time at a lower cost.
Systems with Ampt can increase DC power capacity using the existing electrical BOS and without creating voltage mismatch between strings or overloading the existing ESS and PCS.
Ampt allows the DC bus to operate at a fixed voltage which can be adjusted to fit newer technologies over time. Systems with Ampt have more replacement options for storage components to lower costs.
Ampt Optimizers offer low-cost options when upgrading your existing PV systems to produce more energy and maximize annual project returns. Systems with Ampt recover energy lost from: