Research project to enable 48V power systems for general use COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria

COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria project48 project48 ? Design and offer solutions based on 48Vdc power systems everyone can buy, install and use. Key messages: “Energy which isn’t wasted, does not need to be produced and reduces CO2 emission” “Energy should be produced locally where it will be consumed, to minimize the loss of energy during transport” “Help people to change their mind set, inform and offer ‘learning by doing’, that they them- selves stand-up and request green CO2 neutral solutions” COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria

COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria project48 Why 48V voltage level ? Safe in handling, the maximum voltage is < 75Vdc - Everyone can handle 12V equipment, so 48V as well Already in use in automotive industry - 4 times more power compared with 12V and reuse of cable harness - 48V x 250A = 12kW; Battery energy 48V x 80A = 3,8kWh Already in use for island power systems - Photovoltaic, wind energy, CO2 neutral fuel - Power deployment can be scale-able up to >75kW Already in use for daily things - 48V Bicycle, lawn-mover, water pumps, street lights, power tools COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria

COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria project48 Static application Homebuilding - Extension of a house as a sunroom - Extension of an apartment - Vegetable garden - Garage > Reuse of heated air > Heating with air & electricity > 48V electric power 150W/m2 + DC/AC converter to grid COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria

COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria project48 Automotive (1) 48V photovoltaic on top of the car roof / windscreen - 80% of car ride distances to work are less than 25km - average distance a car is used per day is 36km > benefit of partial shading of the car, less heat-up of internal area means less power for air conditioning > yearly savings: 1040 – 1130kWh/m2 ≈> 2300 – 4200km 18/28km COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria

COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria project48 Automotive (2) Current status of a fossil powered vehicle - 20% of fuel energy is used for moving the car, 80% is waste - Auxiliary equipment is powered with an efficiency of ≈ 65% - No recuperation of energy during slowing down or downhill drive Update to Hybrid vehicle > Add a 48V-12kW power train with recuperation and battery system (Electric powered rear axis) > Modify auxiliary equipment to a 48V electric powered system > Motivate young people to kick the turbo and convert the car to a hybrid COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria

Enable open source network project48 Enable open source network 48V Motors 48V Batteries 48V Controllers 48V Auxiliary equipment Gear box 48V Electronics 48V Light weight build panels High current connectors 48V Power converters 48V Range Extender Energy storage system It is our planet, it’s time to take responsibility ! COP23 2017, Ing Reinprecht OEG ∙ rmt ∙ MDS GmbH, Styria, Austria