Electromagnetic energy converter based on the claw pole principle

This article presents an electrodynamic converter with competitive operating characteristics compared to conventional electric machines, good scalability, and inexpensive manufacturing. The converter is suitable for being used in a variety of applications as an efficient and effective generator or motor. The introduced prototypical converter is a two-phase ex-ternal tooth pole machine with a permanently excited rotor and toroidal coils on the stator. The machine is based on the claw pole principle and has tooth pole pairs. The two subsystems have an electrical offset of 90 degrees to one another, and each of them generates a torque that pulsates over time. The rows of rotor teeth in each system have an electrical offset of 180 degrees to one another. A soft magnetic composite material is used to guide the magnetic flux in all three directions. The prototype generates a voltage of 30 V per coil at a speed of 1500 rpm and produces an extrapolated power of 350 W.