Loading patent…
OwnerManuel Vetterli, Paula Diaz Reigosa +2inventors
InventorsManuel Vetterli, Paula Diaz Reigosa, Stefan Abrach, Matthias Luescher
Estimating the term…
A method for detecting a short-circuit (18) in a power converter (20) is provided. The power converter (20) comprises a first DC terminal (22), a second DC terminal (24), an AC terminal (26), a first semiconductor switch (S1) electrically coupled to the first DC terminal (22) and the AC terminal (26), a second semiconductor switch (S2) electrically coupled to the second DC terminal (24) and the AC terminal (26), and an inductance. The method comprises: sending a turn-on signal (ON) to the first semiconductor switch (S1) for turning on the first semiconductor switch (S1) and a turn-off signal (OFF) to the second semiconductor switch (S2) for turning off the second semiconductor switch (S2); receiving a voltage signal which is representative for a switch voltage (vS1, VS2) measured over the first semiconductor switch (S1) and the second semiconductor switch (S2); determining an inductance voltage (VL) over the inductance depending on the measured switch voltage (vS1, VS2) and a DC voltage (VDC) between the first and second DC terminals (24); determining a current (iSc) flowing through the semiconductor switches (S1, S2) depending on the determined inductance voltage (VL); and determining that the short-circuit (18) is present depending on a predetermined current threshold.
A method for detecting a short-circuit in a power converter, the power converter comprising a first direct current (DC) terminal, a second DC terminal, an alternating current (AC) terminal, a first semiconductor switch electrically coupled to the first DC terminal and the AC terminal, a second semiconductor switch electrically coupled to the second DC terminal and the AC terminal, and an inductance, the method comprising:
A method for detecting a short-circuit in a power converter, the power converter comprising a first DC terminal, a second DC terminal, an AC terminal, a first semiconductor switch electrically coupled to the first DC terminal and the AC terminal, a second semiconductor switch electrically coupled to the second DC terminal and the AC terminal, and an inductance, the method comprising:
A controller for detecting a short-circuit in a power converter, the power converter comprising a first direct current (DC) terminal, a second DC terminal, an alternating current (AC) terminal, a first semiconductor switch electrically coupled to the first DC terminal and the AC terminal, a second semiconductor switch electrically coupled to the second DC terminal and the AC terminal, and an inductance, the controller comprising:
A controller for detecting a short-circuit in a power converter, the power converter comprising a first DC terminal, a second DC terminal, an AC terminal, a first semiconductor switch electrically coupled to the first DC terminal and the AC terminal, a second semiconductor switch electrically coupled to the second DC terminal and the AC terminal, and an inductance, the controller comprising at least one processor configured to:
Dependencies are inferred from the claim text.