Electric planet motor - highly efficient & lightweight at reduced cost

• increased power density – up to 50% more power than conventional drives
• highest energy efficiency over the entire range of application
• extremely simple, cost-effective, and smart design
• very compact and flat design possible
• electric motor with multirotor structure (a stator with four/ six/ eight/ ... rotors)
• rotors are mechanically coupled via an integrated gear unit – which becomes an integrated part of the motor
• with four rotors: twice the power of a conventional machine with the same rotor cross-sectional area
• at the same time less material required for the stator
• possible as permanent magnet- or reluctance-motor (without rare earth metals)
• sensorless control possible by means of INFORM^® control and thus failsafe and with even reduced volume
• failure safety due to elimination of sensors
• enhanced efficiency at lower production cost
• all electric contacts and power electronics can be placed simply at front side, opposite of output side
• manufacturing with a high degree of automatization possible – and thus further significant cost reduction
• prototype with integrated 1:10 reduction shows: electrical behaviour at terminals of the planet motor corresponds to a classic three-phase machine, controlled by a conventional inverter
• 30 years experience in the design of sensorless synchronous motors
• based on the reliable INFORM^® control, used by tens of thousands of systems on the market – e.g. in medical and aerospace technology

Innovation level:

• world novelty – worldwide first presentation of a planet motor with integrated power electronics
• patent protection

Target groups and applications:

• e-mobility
• aerospace technology
• construction machinery and heavy equipment
• machine tools and production machines
• emergency units of various sorts
• drum drives
• robot joint drives

Contact

Univ.Prof. Dr. Manfred Schrödl and Peter Heimerl