Title:
電気機械を作動させる回路装置
Document Type and Number:
Japanese Patent JP2005510998
Kind Code:
A
Abstract:
A circuit arrangement for operating an electrical machine having an inductive component. The circuit arrangement includes an electrical switch (TR 1 through TR 6 ) that applies a pulse-shaped signal (S 1 through S 4 ) to the electrical machine. The free-running circuit also includes an electrical switch (TR 1 through TR 6 ). A comparator ( 15 ) is provided which compares the free-running current flowing in the free-running circuit with a predefined threshold value and, if the current drops below the threshold value, provides a switching signal (S 3 A) that is used to deactivate the switch (TR 1 through TR 6 ) in the free-running circuit. The circuit arrangement reduces both the electrical power loss in the circuit arrangement and the mechanical power loss in the electrical machine.
Inventors:
Jürgen Halfmann
Ingo Mendelfer
Ingo Mendelfer
Application Number:
JP2003548386A
Publication Date:
April 21, 2005
Filing Date:
June 28, 2002
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
H02M1/08; H02P6/08; H02P6/28; (IPC1-7): H02M7/48; H02M1/08
Attorney, Agent or Firm:
Toshio Yano
Einzel Felix-Reinhard
Reinhard Einsel
Einzel Felix-Reinhard
Reinhard Einsel