Circuit for simulating an electrical load

US8754663B2 · kind B2 · utility

Assignee

• dSPACE digital signal processing and control engineering GmbH · DE

Inventors

• Thomas Schulte · Paderborn, DE
• Joerg Bracker · Delbrück, DE

Key dates

• Filing date: Jul 15, 2009
• Grant date: Jun 17, 2014
• Expiry date: Jan 9, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B1/03
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A circuit for simulating an electrical load at a terminal of a test circuit having at least one first switch and at least one second switch includes a third switch connected to the first switch of the test circuit via a first external connection point. A fourth switch is connected to the second switch of the test circuit via a second external connection point. The first switch and the second switch are connected via a shared, first internal connection point to the terminal of the test circuit and the third switch and the fourth switch are connected via a shared, second internal connection point such that that the first switch, the second switch, the third switch and the fourth switch form an H-bridge circuit. A voltage source is configured to provide the first and second external connection points with a supply voltage. A controllable voltage source is connected in a transverse bridge branch between the terminal and the second internal connection point. An inductance is active in the transverse bridge branch. A current-control unit is operable on the controllable voltage source so as to adjust, to a predetermined setpoint current, an actual current flowing over the terminal of the …