Electronically commutated DC machine and its use

摘要

The rotor of an electronically commutated DC machine, which can be operated as a motor or as a generator, has at least one permanent magnet having at least four poles which are arranged concentrically with respect to the rotor rotation axis, are polarised essentially at right angles to the rotor rotation axis and are arranged adjacent to an annular magnetic return path part. The stator winding is accommodated in the annular gap between the rotor and the magnetic return path part and has a meandering conductor-track arrangement which is constructed as a printed circuit and whose straight meander sections running to and fro consist of a number of parallel conductor sections. A device which detects the angular position of the rotor with respect to the straight meander sections running to and fro supplies signals to a drive electronics device which, for its part, controls the current flow through the conductor-track arrangement such that, in consequence, said arrangement produces a magnetic field which drives the rotor. The starts and ends of the conductors forming the conductor sections are - depending on the application - connected in parallel or in series, and the geometrical arrangement of the connecting contacts of these conductors and/or of the sensors of the detection device allows direct connection to the drive electronics device. The drive electronics device is accommodated on a - preferably annular - board, around the rotor rotation axis, within the conductor-track arrangement. A DC motor which is constructed in such a manner, is electronically commutated, and has ... Original abstract incomplete.