US 7,415,072 B2
Drive control for an electric drive with a secure electrical separation of power element and control element
Susanne Gaksch, Erlangen (Germany); Kurt Göpfrich, Erlangen (Germany); Peter Heidrich, Nürnberg (Germany); Franz Imrich, Erlangen (Germany); and Peter Jänicke, Erlangen (Germany)
Assigned to Siemens Aktiengesellschaft, München (Germany)
Appl. No. 10/398,087
PCT Filed Sep. 17, 2001, PCT No. PCT/DE01/03575
§ 371(c)(1), (2), (4) Date Mar. 31, 2003,
PCT Pub. No. WO02/27913, PCT Pub. Date Apr. 04, 2002.
Claims priority of application No. 100 48 353 U (DE), filed on Sep. 29, 2000.
Prior Publication US 2004/0080885 A1, Apr. 29, 2004
Int. Cl. H04B 3/00 (2006.01); H04L 25/00 (2006.01)
U.S. Cl. 375—257  [375/256; 375/361; 361/62; 363/21.07] 22 Claims
OG exemplary drawing
 
1. A drive control system for an electrical drive, comprising:
a power section which is at a comparatively high electrical potential;
a drive electronics which supplies the power section with a plurality of drive signals and receives a plurality of phase current actual values from the power section;
a digital communications interface;
a control unit which is at a comparatively low electrical potential and is operatively connected to the drive electronics via the communications interface; and
an electric transformer, disposed in the communications interface, for implementing a DC isolation between the comparatively high electrical potential of the power section and the comparatively low electrical potential of the control unit.