Holger Hannemann
Holger studied electrical engineering at the Technical University in Chemnitz, Germany and the Novosibirsk Electro technical Institute (NETI), Russia with focus on power electronics and process control. He worked 19 years in Europe with low and medium voltage drive systems from ABB in various positions, before moving to New Zealand where he joined ABB’s low voltage power converter business in Napier. Here he was product manager grid connection and drove the development and market introduction of inverter systems for Energy Storage Systems (ESS) and STATCOMs. Since 2011 Holger manages the worldwide sales for ABB’s power conditioning products.


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Power Quality – voltage sags

Voltage sags or dips are constant issues even in developed countries with modern power networks