Abstract: A system includes: an AC-DC converter; and a DC-DC converter, the DC-DC converter including: a first high voltage buck-boost converter having a secondary side connectable to a first high voltage battery; a second high voltage buck-boost converter having a secondary side connectable to a second high voltage battery; a first low voltage buck-boost converter having a secondary side connectable to a first low voltage battery; a second low voltage buck-boost converter having a secondary side connectable to a second low voltage battery; and one or more transformers having a primary side connected to the AC-DC converter and a secondary side connected to each of a primary side of the first high voltage buck-boost converter, a primary side of the second high voltage buck-boost converter, a primary side of the first low voltage buck-boost converter, and a primary side of the second low voltage buck-boost converter.

Abstract: A system includes: an alternating current (AC) to direct current (DC) converter (AC-DC converter), the AC-DC converter connectable to a line voltage; and a DC to DC converter (DC-DC converter) connected to the AC-DC converter, the DC-DC converter including: a high voltage buck-boost converter having a secondary side connectable to a high voltage battery; a low voltage buck-boost converter having a secondary side connectable to a low voltage battery; and one or more transformers having a primary side connected to the AC-DC converter, a secondary side connected to a primary side of the high voltage buck-boost converter, and a tertiary side connected to a primary side of the low voltage buck-boost converter.

Abstract: A continuous asymmetric risk analysis system and method of operating the same. In one embodiment, the method includes receiving a definition of a risk event of a complex system based on a likelihood and consequence, and prevention and mitigation measures for the risk event, and receiving risk event data. The method also includes creating a model populated with the risk event data, and executing Monte Carlo simulations of the model to produce Monte Carlo results. The method also includes analyzing and aggregating the Monte Carlo results of the likelihood and consequences, and the prevention and mitigation measures for the risk event to create a nominal risk value of the risk event and asymmetric confidence intervals to produce a continuous gradient of outcomes. The method also includes organizing and presenting the outcomes for evaluation, and prescribing an action for the complex system based on a selected outcome.

Abstract: Incident data associated with an incident are obtained. A set of reportable criteria related to the incident are obtained. A subset of the reportable criteria described in the incident data are identified using one or more classifiers. A summarization request is transmitted to a language model. The summarization request includes the subset of the reportable criteria and the incident data. An incident status report received from the language model in response to the summarization request is transmitted to one or more users.

Abstract: A battery charger of an electric vehicle has a relay controllably connecting and separating an AC source and an internal power line. When starting up the battery charger, before first commanding the relay to close, voltages are measured on an input side of the relay, connected to the AC source to receive; and on an output side of the relay, connected to the power line, when the output side is electrically isolated from the input side due to the relay being in its open state. If there is a difference between these measured voltages that is greater than a threshold value, a capacitor coupled to the power line is charged. After the capacitor is charged, then the command to close the relay is issued. Upon the relay closing, the battery charger circuit charges the battery via the power line using the incoming AC power.

Abstract: A system comprises: a high voltage (HV) direct current (DC) to DC converter (HVDC) including: one or more transformers; a bridge driver connected to a primary side of the one or more transformers; and one or more bridge rectifiers connected to a secondary side of the one or more transformers, the one or more bridge rectifiers including one or more bridge rectifier switches; a low voltage (LV) DC to DC converter (LVDC) connected to the HVDC; and a boost converter including: an inductor connected to the one or more bridge rectifier switches; and one or more boost configuration switches operable, in combination with the one or more bridge rectifier switches, to configure the boost converter into each of a bypass configuration and a boost configuration, to regulate a voltage at the LVDC.

Abstract: In one general aspect, a method can include causing display of a webpage within a display area of a browser, and causing display of a search area indicator associated with an area of the webpage. The method can include receiving a selection of the search area indicator. In response to the selection of the search area indicator being received the method can include defining an image corresponding to the area, and triggering a search query based on the image. The method can include receiving a search result in response to the search query, and causing display of the search result in a search result area outside of the display area where the search result area is within the browser.

Abstract: A method for controlling a battery charger circuit of a vehicle. The method includes injecting a first current pulse between at least one line and a protective earth connection of the battery charger circuit. The method also includes measuring at least one line voltage value of at least one node of the battery charger circuit. The method also includes identifying a noise value by performing one or more operations on the battery charger circuit. The method also includes determining a protective earth connection impedance based on the at least one line voltage value and the noise value.

Abstract: An electrically powered vehicle system includes a DC/DC converter stage with a rectified input terminal which receives a rectified input from an AC power input. The system also includes a vehicle battery which receives power output from the DC/DC converter stage, via a first link between the rectified input terminal and the DC/DC converter stage. A second link is connected to the first link and to a vehicle device.

Abstract: A method for detecting a fault in a battery charger circuit of a vehicle includes determining, based on at least one expected voltage value of an incoming alternating current source, a first threshold. The method also includes measuring at least one line voltage value associated with the incoming alternating current source that provides power to the battery charger circuit. The method also includes determining whether the measured at least one line voltage value is greater than the first threshold. The method also includes in response to a determination that the measured at least one line voltage value is greater than the first threshold, disconnecting the battery charger circuit from and/or preventing the battery charger circuit from connecting to the incoming alternating current source after a first predetermined period.

Abstract: A vehicle electrical system including a battery, the terminals of which supply positive and negative power rails, the battery being connected to one or more vehicle devices to supply power or charging thereto. The devices include capacitors. The system also includes at least one heating device and a switch to allow capacitor discharge to flow through the heating device.

Abstract: A method for controlling a battery charger circuit of a vehicle. The method includes injecting a first current pulse between at least one line and a protective earth connection of the battery charger circuit. The method also includes measuring at least one line voltage value of at least one node of the battery charger circuit. The method also includes identifying a noise value by performing one or more operations on the battery charger circuit. The method also includes determining a protective earth connection impedance based on the at least one line voltage value and the noise value.

Abstract: A method for a battery charger circuit of a vehicle includes measuring a first voltage value on a first side of a relay that is connected to an incoming alternating current source. The method also includes measuring a second voltage value on a second side of the relay that is connected to the battery charger circuit. The method also includes determining whether a difference between the first voltage value and the second voltage value is greater than a threshold. The method also includes, in response to a determination that the difference between the first voltage value and the second voltage value is greater than the threshold, charging one or more capacitors on the second side of the relay.

Abstract: A method for detecting a fault in a battery charger circuit of a vehicle includes determining, based on at least one expected voltage value of an incoming alternating current source, a first threshold. The method also includes measuring at least one line voltage value associated with the incoming alternating current source that provides power to the battery charger circuit. The method also includes determining whether the measured at least one line voltage value is greater than the first threshold. The method also includes in response to a determination that the measured at least one line voltage value is greater than the first threshold, disconnecting the battery charger circuit from and/or preventing the battery charger circuit from connecting to the incoming alternating current source after a first predetermined period.

Abstract: An electrically powered vehicle system including a battery, the terminals of which supply positive and negative power rails, and including a bulk capacitor located in series with a switching device, and being electrically connected between the power rails. A heater having a heating resistance is connected in series with a heater switch, and is electrically connected between the power rails. A link is electrically connected between a point between the bulk capacitor and the switching device to a point between heating resistance and the heater switch.

Abstract: An electrically powered vehicle system including a battery, the terminals of which supply positive and negative power rails, and including a bulk capacitor located in series with a switching device, and being electrically connected between the power rails. A heater having a heating resistance is connected in series with a heater switch, and is electrically connected between the power rails. A link is electrically connected between a point between the bulk capacitor and the switching device to a point between heating resistance and the heater switch.

Abstract: An electrically powered vehicle system includes a DC/DC converter stage with a rectified input terminal which receives a rectified input from an AC power input. The system also includes a vehicle battery which receives power output from the DC/DC converter stage, via a first link between the rectified input terminal and the DC/DC converter stage. A second link is connected to the first link and to a vehicle device.

Abstract: A vehicle electrical system including a battery, the terminals of which supply positive and negative power rails, the battery being connected to one or more vehicle devices to supply power or charging thereto. The devices include capacitors. The system also includes at least one heating device and a switch to allow capacitor discharge to flow through the heating device.

Abstract: Various features for allowing a user to control a camera in an intuitive manner are described. Various features allow a user to control one or more camera settings via a touch screen. In some embodiments a rotating wheel is simulated on the display screen to show user selectable camera setting values with the values being displayed as if on the surface of the wheel with a currently selected value being closest to the user, e.g., in the center, and values above and below the currently selected value being shown using a smaller size as if further away from the user. A current setting for the feature being controlled is displayed near the center of the screen in some embodiments. A currently selected value is sometimes shown larger than other user selectable settings. The camera settings include an ISO setting, a focal length, e.g., zoom setting, and/or an exposure control setting.

Abstract: A system and method is provided for detecting vehicle proximity in an electric vehicle supply equipment (EVSE). A sensor may be configured to detect a presence of a vehicle within a predetermined distance of the EVSE. A processor may be configured to determine that the vehicle is in proximity of the EVSE in response to the sensor detecting the presence of the vehicle. The processor may be further configured to generate an alert in response to a determination that the vehicle is in proximity of the EVSE.