| 摘要 |
The invention relates to a motor of the type energizable by a DC voltage and having at least two parallel stator winding branches with each branch having a stator winding in series with a controllable switching element. A demagnetization branch in parallel with each stator winding branch has an oppositely poled demagnetization winding inductively coupled to the associated stator winding and a series connected diode poled oppositely of the associated switching element. When one stator winding is switched off the voltage induced in the inductively coupled demagnetization winding produces a current which flows through the associated diode and the next simultaneously switched on stator winding. In this way the magnetic energy of the switched off stator winding is rapidly reduced and is utilized to supplement the magnetic field of the simultaneously switched on stator winding. |
