(Please note that earth protection cable is only connected to the cabinet chassis).
State-of-the-art digital control is used in all CINERGIA products. In the EL case, the control system
algorithms are computed in two DSP based hardware, designed by CINERGIA, allowing a
multitask execution of the regulation systems for the Active Rectifier and the Inverter output.
This produces a fast transient response and a high performance against EUT changes. A 12 bits
analog to digital conversion, with digital processing, allows a high resolution output up to 0.1%.
Resonant control (only AC)
Control algorithms based on Resonant controllers are used in both AC sides; i.e. Resonant
Control is always used in grid side but it is used in EUT side only when AC output option is chosen
for the electronic load.
The algorithms regulation is structured in blocks resonating at a given frequency. Within the
resonant frequency each block allows the suppression of gain and phase errors of the current.
Thanks to this, each harmonic can be controlled independently and thus it can be generated or
suppressed, as needed.
The following diagram illustrates how the mentioned algorithms operate:
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