Fischer, Jens Peter

An uninterruptible power supply (UPS) system (100, 300) is provided. The UPS system includes a plurality of UPSs (102, 104, 106, 302, 304, 306), a ring bus (118, 314, 410, 510) that electrically couples the UPSs (118, 314, 410, 510) together, a static switch (340, 342, 344) coupled between an associated UPS of the UPSs (118, 314, 410, 510) and the ring bus (118, 314, 410, 510), and a controller (200). The controller (200) receives current data representative of an inverter current and a load current associated with the associated UPS. An output capacitor (606) of the associated UPS is coupled to a node that conducts the inverter current and the load current. The controller (200) further calculates a measured current based on the received current data, determines a voltage of said output capacitor (606), generates a derived current based on the determined voltage and a predetermined capacitance of said output capacitor (606), compares the measured current and the derived current to identify a fault location, and controls said static switch (340, 342, 344, 408) based on the identified fault location.

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A system for determining identity information corresponding to an electrically operable machine 116, 118, 120 is disclosed, where the electrically operable machine receives electricity from a power supply port 122, 124, 126. The system includes at least one sensor 128 to generate a signal indicative of the electricity being drawn by the electrically operable machine from the power supply port. The system further includes a controller 114 communicatively coupled to the at least one sensor and configured to determine the identity information corresponding to the electrically operable machine based on one or more electrical characteristics of the signal sensed by the at least one sensor. Method and non-transitory computer readable media for determining the identity of the electrically operable vehicle are also disclosed. Moreover, a system for controlling charging of a vehicle that is operated at least partially by the electricity is also disclosed.

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Zusammenfassung wird geladen …

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Zusammenfassung wird geladen …

A solid state circuit breaker (100) is disclosed, which includes a solid state switch (SW), an inductor (L) in series connected with the solid state switch (SW), and a fault detection circuit (1). The solid state switch (SW) has a gate electrode (g), a source electrode (s) and a drain electrode (d). The fault detection circuit (1) is configured for detecting health status of the solid state switch (SW) and identifying faulty type of the solid state switch (SW) in the condition that the solid state switch (SW) occurs fault based on one or more of a measured voltage (V<1>) of the solid state switch between the source electrode (s) and the drain electrode (d), a measured voltage (V<m>) of the inductor, a reference voltage (V<r>) and a switching control signal (S<g>) provided to the gate electrode of the solid state switch. A motor driving system (200) is also disclosed.