The IPG Effi­ci­en­cy Kit offers a signi­fi­cant yield increase for inver­ters of the Conergy IPG K series.

Hamburg, 7th May 2018: Since 2005 about 3.500 inver­ters of the IPG K-series have been produced under the brands Conergy, Voltwerk and Sun­Tech­nics. These inver­ters rep­re­sent signi­fi­cant opti­mi­za­ti­on poten­ti­al through exchange of certain key com­pon­ents.

Due to the ter­mi­na­ti­on of the pro­duc­tion of spare parts for inver­ters of this type, green­tech deve­lo­ped own com­pon­ents to secure main­ten­an­ce and repair measures for long-term con­trac­ts. The IPG Effi­ci­en­cy Kit is the fully com­pa­ti­ble retrofit kit for the control of central inver­ters of the IPG K-series. Besides securing the spare parts avai­la­bi­li­ty, it offers the fol­lo­wing benefits:

  • Fast reaction on changing irra­dia­ti­on through MPP-tracking exact to the second
  • Increa­sed sta­bi­li­ty of the ope­ra­ting beha­viour and mini­mi­zed fault rates
  • Lower service efforts due to maintenance-free and low-maintenance com­pon­ents
  • Lower power con­sump­ti­on
  • Pos­si­bi­li­ty to perform active power manage­ment

The IPG Effi­ci­en­cy Kit has been imple­men­ted over 50 times until now. The expe­ri­ence from those projects has been analysed in detail. The central result of the analysis is that, depen­ding on the plant design, this inverter opti­mi­za­ti­on can lead to yield increa­ses up to 4 %. Depen­ding on the project specific remu­ne­ra­ti­on con­di­ti­ons the inverter upgrade amor­ti­zes within 1-3 years. The fol­lo­wing prac­ti­cal examples provide further illus­tra­ti­on for the benefits of the IPG Effi­ci­en­cy Kit:

Increa­sed yield and a more stable ope­ra­ting beha­viour of the inver­ters: At the PV-plant Voltwerk Solar­park 17 near Göt­tel­born (Germany) with a total output of 4 megawatt, the test of the IPG Effi­ci­en­cy Kit in two central inver­ters lead to a signi­fi­cant yield increase. Fur­ther­mo­re, the opti­mi­za­ti­on of those inver­ters resulted in a more stable ope­ra­ti­on. This con­vin­ced the client to engage green­tech for a complete retro­fit­ting of 16 central inver­ters in total.

”Besides the increa­sed yield through the IPG Effi­ci­en­cy Kit another advan­ta­ge is that the inver­ters operate signi­fi­cant­ly more stable. This results in less effort for us con­cer­ning ope­ra­ti­on and main­ten­an­ce activi­ties for the plant.” (Mario Wulff, Voltwerk Solar­park 17 GmbH & Co. KG)

Exten­si­on of avai­la­bi­li­ty on European markets: green­tech is cur­r­ent­ly working towards the cer­ti­fi­ca­ti­on of the IPG Effi­ci­en­cy Kit as an opti­mi­za­ti­on measure on addi­tio­nal European markets. For Italy and Spain the market intro­duc­tion is planned for 2018.

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Press contact

Steffen Heber­lein
Hop­fen­stra­ße 23
20359 Hamburg
+49 (40) 8060 6694 31