The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1993
Filed:
Dec. 14, 1989
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
In the regulation of the torque response of multiphase electronically commutated electric motors, in particular synchronous motors, a constant moment of rotation response is achieved by forming the nominal current values for the phases to be regulated depending on a torque-regulating variable and the rotor position. A current regulator is assigned to each current phase to be regulated. The method makes it possible to preset a nominal current value for each phase to be regulated for any adjustable torque as a function of the particular rotor position. The separate regulation of the nominal current values ensures that the up-commutating current is alternating exactly with the down-commutating current and hence no system-caused torque transients occur.