Abstract: In a general aspect, a bonded interface in a vapor cell is formed using plasma-activated surfaces. In some aspects, manufacturing a vapor cell includes obtaining a dielectric body and an optical window. The dielectric body has a surface that defines an opening to a cavity in the dielectric body, and the cavity is configured to contain a vapor. The surface of the dielectric body and a surface of the optical window are contacted to form a seal around the opening to the cavity. The seal includes a metal oxynitride layer that is disposed along an interface between the surfaces of the dielectric body and the optical window. In certain cases, the seal is formed at a temperature no greater than 150° C.

Abstract: A control device acquires information regarding performance and running from each of a plurality of distributed power supplies; acquires a power demand amount from a plurality of demanders to which power is to be supplied by the plurality of distributed power supplies; acquires a selection criterion to be used at a time of selecting, from among the plurality of distributed power supplies, a distributed power supply to be operated when supplying power to the plurality of demanders. A control device selects a distributed power supply to be operated from among the plurality of distributed power supplies based on the information acquired, the power demand amount, and the selection criterion; creates an operation plan for the distributed power supply selected and controls running of the distributed power supply selected based on the operation plan created.

Abstract: A resilient on-site microgrid system includes a multiport power router directly connected to various energy sources, including batteries, renewable energy sources, and broader grid power, as well as various loads, including electric vehicle chargers. The multiport power router dynamically adjusts power provided from the various power sources and to the various loads, especially to power devices in a nearby facility. The microgrid system includes various bypass systems allowing for powering of critical loads in the event of failure of individual components or pathways within the microgrid system.

Abstract: A temperature control apparatus includes a first fastening structure, a second fastening structure, two first support beams, two second support beams, a fastening frame, and a target component. The first fastening structure and the target component are located on an inner side of the fastening frame. The second fastening structure is located on an outer side of the fastening frame. The first fastening structure is connected to the fastening frame through the two first support beams. The second fastening structure is connected to the fastening frame through the two second support beams. The target component is fastened to the first fastening structure. A temperature difference between a first connection position and a second connection position that are on the fastening frame and that are respectively for connection to the two first support beams is less than a first preset value.

Abstract: This disclosure is directed to generator systems and methods for monitoring a direct current bus and automatically operating in response to a power level of the direct current bus dropping below a desired power level or to a threshold before dropping below the power level. The automatic operation of the generator system may raise or keep the actual power level of the system above the desired power level or threshold.

Abstract: A system includes a plurality of ring oscillators, a controlled circuit, and a controller operably coupled to the plurality of ring oscillators and the controlled circuit. The controller is configured to operate one or more of the plurality of ring oscillators based on the controlled circuit and provide a voltage code to the controlled circuit based on analyzing oscillation behaviors of the one or more of the plurality of ring oscillators.

Abstract: A power transmission apparatus wirelessly transmits power to a power receiving apparatus via a power transmission antenna, measures at least either of a voltage and a current in the power transmission antenna at least two or more time points of a power transmission restriction period in which power to be transmitted to a power receiving apparatus is restricted, and performs measurement processing, including first measurement processing and second measurement processing, plurality of times. In this process, a processing period related to the first measurement processing and a processing period related to the second measurement processing are controlled to have different lengths.

Abstract: This disclosure provides systems, methods and apparatuses for wireless power transmission and reception. A wireless power transmission apparatus may include a primary coil that transmits power to a corresponding secondary coil in a wireless power reception apparatus. The wireless power transmission apparatus may configure characteristics of the wireless power transmission based on a load setting of a wireless power reception apparatus. The wireless power transmission apparatus may take into account a coupling factor and power transfer characteristics of the wireless power reception apparatus in determining a configuration of the wireless power transmission from the wireless power transmission apparatus to the wireless power reception apparatus. In some implementations, a change in wireless power transmission may occur based on a corresponding change in the load. For example, the change in wireless power transmission and the corresponding change in the load may occur in relation to a synchronization event.

Abstract: A grid-connected electric vehicle charging station system and method. Installing electric vehicle charging stations are typically high in cost, particularly due to requiring the utility grid to be upgraded to increase the electrical power routed to a respective customer site. In contrast, the system and method disclosed are low-footprint behind-the-meter solution that does not require any upgrade to the utility grid and that use the existing power capacity at a customer site. More particularly, the system and method rely on renewable energy sources, such as photovoltaics and batteries, as the primary source of energy to power the electric vehicles and rely on the utility grid connection for backup (limited to the existing electrical power routed to the respective customer site). In this way, the grid-connected electric vehicle charging station system and method may enable powering of electric vehicles while still allowing for easy installations at a customer site.

Abstract: A vehicle information service for monitoring vehicle data from a vehicle data bus and providing a secure interface to allow devices on the vehicle to retrieve vehicle data for which they have authorization is described. The vehicle information service may organize the vehicle data into one more collections of vehicle data, where different collections may be authorized for different application authentication profiles and include different combinations of the vehicle data. The vehicle information service may also offer and restrict access to information about other devices or services on the vehicle. The vehicle information service may also provide control of various devices such as devices coupled with an access network on the vehicle or devices coupled with the vehicle data bus.

Abstract: The present application relates to a method of operating a converter within an operating range, the converter being comprised in an electrical circuit for a vehicle, which electrical circuit comprises at least one load and at least one battery pack, comprising the steps of determining the operating range by determining the relation between output current from the converter with rapid current drop in the electrical circuit, which rapid current drop is based on parameters from the at least one load and the at least one battery pack, and regulating the voltage from the converter for controlling the output current within the determined operating range.

Abstract: The present application relates to a portable AC-DC power converter for an on-board refrigeration unit and an on-board power supply management device suitable for use in conjunction with the aforementioned portable AC-DC power converter. A portable AC-DC power converter for on-board electrical equipment according to one aspect of the present application comprises: an AC-DC conversion unit; one or more AC power plugs connected to an input terminal of the AC-DC conversion unit; and one or more connectors connected to an output terminal of the AC-DC conversion unit, wherein the connector comprises a DC output interface and a conductor, where the conductor is configured to short circuit contacts arranged on the refrigeration unit on the vehicle side when the DC output interface is engaged with a DC input interface of an on-board connector to generate a trigger signal to disconnect the on-board electrical equipment from an on-board power source.

Abstract: A power converter comprises a chassis and an AC connector, a low-voltage DC connector and a high-voltage DC connector at an exterior surface of the chassis. An AC-DC converter circuit is positioned at least partially within the chassis and is coupled to the AC connector. A first converter circuit is positioned at least partially within the chassis and is coupled to the AC-DC converter circuit and to a high-voltage DC bus. The high-voltage DC bus is connected to the high-voltage DC connector. A second converter circuit is positioned at least partially within the chassis and is coupled to the high-voltage DC bus to a low-voltage DC bus. The low-voltage DC bus is connected to the low-voltage DC connector.

Abstract: A micro inverter, a photovoltaic system and a control method are provided. The micro inverter includes a controller, a primary H-bridge, a transformer, a bi-directional switch leg, and a capacitor leg An input terminal of the primary H-bridge is connected to a direct-current power supply, two output terminals of the primary H-bridge are respectively connected to two terminals of a primary side of the transformer, two terminals of a secondary side of the transformer are respectively connected to an intermediate terminal of the bi-directional switch leg and an intermediate terminal of the capacitor leg, and the bi-directional switch leg and the capacitor leg are connected in parallel. The controller is configured to switch a control mode of the primary H-bridge and the bi-directional switch leg in a case that a phase of a grid voltage is an odd multiple of 0.25? in each cycle.

Abstract: A multi-path radio frequency (RF) system includes a reference oscillation circuit, a local oscillation (LO) generator circuit, and mixer circuits. The reference oscillation circuit generates a reference oscillation signal. The LO generator circuit receives the reference oscillation signal, and generates LO signals according to the reference oscillation signal, where a frequency of the reference oscillation signal is a non-integer multiple of a frequency of at least one of the LO signals. The mixer circuits are located on different signal paths, respectively, and used to receive the LO signals from the LO generator circuit, respectively.

Abstract: A switch mode power converter, in one example, includes a transformer with a primary coil and a pair of secondary coils in phase with the primary coil, and a pair of output circuits defining a pair of opposite polarity outputs. Each of the output circuits includes a rectifying diode having an anode directly connected with a dotted terminal of one of the secondary coils such that electromagnetic noise generated by the rectifying diodes at least partially cancels.

Abstract: A mobile power source includes an electrical generator, a controller, a resistor, and a user-activated switch positioned on a control panel of the electrical generator, the user-activated switch is configured to move between at least a first position and a second position. In response to the user-activated switch being in the first position, the resistor is configured to act as a terminating resistor at one end of a controller area network (CAN) bus of a power generation system, and in response to the user-activated switch being in the second position, the resistor is configured to be prevented from acting as the terminating resistor of the CAN bus.

Abstract: A load shed module configured to be connected in series between a power supply and a load is disclosed. A separate load shed module is connected in series between each load and the power supply. The load shed module determines the frequency of the voltage supplied from the power supply. Based on the frequency, the load shed module determines if utility power is connected or if a generator is connected. If the generator is connected and the frequency of the voltage goes outside of a desired operating range for a preset time, the load shed module disconnects the load from the power supply. Each load shed module includes a priority setting and reconnects its corresponding load after a predetermined time corresponding to the priority setting.

Abstract: A circuit assembly is provided for a switched-mode power supply of an electric auxiliary device at the site of a connected electric load located in a power circuit in which a switch element switches the operating state of the load with low losses while the auxiliary device is permanently supplied with electric energy. The circuit assembly has a bridge component arranged in a parallel circuit with respect to the switch element, and a support component connected upstream of the load such that the load is supplied with power on the basis of the switch position of the switch element, and at least one auxiliary device arranged between the bridge component and the support component and which is supplied with power without interruption regardless of the switch position of the switch element. The bridge component has a cyclically conductive switch element, and the support component has a anti-cyclically conductive switch element and a storage element.

Abstract: A regulator for a load voltage includes a pass transistor for a load current, a gate voltage sensor coupled to a gate of the pass transistor, and a feed-forward supply noise cancellation circuit configured to amplify a gain of a supply noise cancelling signal at increments of the gate voltage.