A two-wire smart load control device, such as an electronic switch, for controlling the power delivered from a power source to an electrical load comprises a relay for conducting a load current through the load and an in-line power supply coupled in series with the relay for generating a supply voltage across a capacitor when the relay is conductive. The power supply controls when the capacitor charges asynchronously with respect to the frequency of the source. The capacitor conducts the load current for at least a portion of a line cycle of the source when the relay is conductive. The load control device also comprises a bidirectional semiconductor switch, which is controlled to minimize the inrush current conducted through the relay. The bidirectional semiconductor switch is rendered conductive in response to an over-current condition in the capacitor of the power supply, and the relay is rendered non-conductive in response to an over-temperature condition in the power supply.

A two-wire smart load control device, such as an electronic switch, for controlling the power delivered from a power source to an electrical load comprises a relay for conducting a load current through the load and an in-line power supply coupled in series with the relay for generating a supply voltage across a capacitor when the relay is conductive. The power supply controls when the capacitor charges asynchronously with respect to the frequency of the source. The capacitor conducts the load current for at least a portion of a line cycle of the source when the relay is conductive. The load control device also comprises a bidirectional semiconductor switch, which is controlled to minimize the inrush current conducted through the relay. The bidirectional semiconductor switch is rendered conductive in response to an over-current condition in the capacitor of the power supply, and the relay is rendered non-conductive in response to an over-temperature condition in the power supply.

A method controls an UPS with a system having: first and second terminals, a switch having: first and second switch terminals respectively connected to the first and second terminals; first and second thyristors connected between the first and second switch terminals in anti-parallel; and an inverter connected to the second terminal and the energy store. Switch current and a first potential at the first terminal are detected. In a first fault, where the first potential drops past a first rule and the switch current rises above a second rule: a second potential at the second switch terminal is set using the inverter so the switch current becomes zero. Then the switch current is compared with a second threshold, and if it is exceeded, a first check result is positive, otherwise it's negative. When positive, the second potential is reversed.

A method controls an UPS with a system having: first and second terminals, a switch having: first and second switch terminals respectively connected to the first and second terminals; first and second thyristors connected between the first and second switch terminals in anti-parallel; and an inverter connected to the second terminal and the energy store. Switch current and a first potential at the first terminal are detected. In a first fault, where the first potential drops past a first rule and the switch current rises above a second rule: a second potential at the second switch terminal is set using the inverter so the switch current becomes zero. Then the switch current is compared with a second threshold, and if it is exceeded, a first check result is positive, otherwise it's negative. When positive, the second potential is reversed.

Embodiments of the present invention disclose a method, computer system, and computer program product for a processor-implemented method for a movable wall process, the method including collecting a set of rules governing a size of a main room and a size of one or more sub-rooms comprising the main room, determining a starting position of a movable wall, where the movable wall separates the one or more sub-rooms, and where the starting position is determined by the set of rules, determining a location of one or more people, determining a required wall movement for the movable wall, wherein the required wall movement is determined by the set of rules and the location of one or more people, and moving the movable wall to a new position, based on the starting position and the required wall movement.

Embodiments of the present invention disclose a method, computer system, and computer program product for a processor-implemented method for a movable wall process, the method including collecting a set of rules governing a size of a main room and a size of one or more sub-rooms comprising the main room, determining a starting position of a movable wall, where the movable wall separates the one or more sub-rooms, and where the starting position is determined by the set of rules, determining a location of one or more people, determining a required wall movement for the movable wall, wherein the required wall movement is determined by the set of rules and the location of one or more people, and moving the movable wall to a new position, based on the starting position and the required wall movement.

Embodiments of the present invention disclose a method, computer system, and computer program product for a processor-implemented method for a movable wall process, the method including collecting a set of rules governing a size of a main room and a size of one or more sub-rooms comprising the main room, determining a starting position of a movable wall, where the movable wall separates the one or more sub-rooms, and where the starting position is determined by the set of rules, determining a location of one or more people, determining a required wall movement for the movable wall, wherein the required wall movement is determined by the set of rules and the location of one or more people, and moving the movable wall to a new position, based on the starting position and the required wall movement.

Embodiments of the present invention disclose a method, computer system, and computer program product for a processor-implemented method for a movable wall process, the method including collecting a set of rules governing a size of a main room and a size of one or more sub-rooms comprising the main room, determining a starting position of a movable wall, where the movable wall separates the one or more sub-rooms, and where the starting position is determined by the set of rules, determining a location of one or more people, determining a required wall movement for the movable wall, wherein the required wall movement is determined by the set of rules and the location of one or more people, and moving the movable wall to a new position, based on the starting position and the required wall movement.

A battery switch driving circuit according to an embodiment of the present invention comprises: a first battery input terminal and a second battery input terminal; a converter positioned between the first battery input terminal and the second battery input terminal; a first switch positioned between the second battery input terminal and the converter, so as to cut off a power input of the second battery input terminal when turned off; and a switch driving unit for turning on the first switch, wherein the switch driving unit comprises: a first capacitor which is charged or discharged according to on/off of a second switch operated by a PWM signal; and a second capacitor which is charged according to on/off of the second switch by a voltage charged in the first capacitor, so as to turn on the first switch.

A control device of a power converter includes first and second switching circuits. The device converts AC power supplied from an AC power supply into DC power, and supplies the DC power to the DC circuit. First converter arms are connected in series in the first switching circuit. Second converter arms are connected in series in the second switching circuit. The device further includes first and second control circuits connected to the first and the second switching circuits and control gate pulses of each of the first and the second arms respectively. A first and a second power interruption compensation circuits supply power to the first and the second control circuits for prescribed durations in power interruptions of the first and the second control circuits respectively.