A system for controlling automation includes a machine which collects data generated by performance of an operation by the machine. A user device displays a machine control interface (MCI) corresponding to the machine. The MCI displays the collected data to a touch interface of the user device, and defines at least one touch activated user interface element (UIE) for manipulating the data. The user device can be enabled as an automation human machine interface (HMI) device for controlling an operation performed by the machine, such that a touch action applied to a UIE of the MCI controls the operation. A prerequisite condition to enabling the user device as an automation HMI device can include activation of an enabling switch selectively connected to the user device. The MCI can be stored in a memory of the enabling switch and retrieved from the enabling switch by the user device.

Methods and systems are provided for managing environmental conditions and energy usage associated with a site. One exemplary method of regulating an environment condition at a site involves a server receiving environmental measurement data from a monitoring system at the site via a network, determining an action for an electrical appliance at the site based at least in part on the environmental measurement data and one or more monitoring rules associated with the site, and providing an indication of the action to an actuator for the electrical appliance.

Some embodiments include electric power demand stabilization methods and systems that may include measuring the power draw of a plurality of controllable devices; determining a rolling average power draw for the plurality of controllable devices over a period of time; measuring an instantaneous power draw of the plurality of controllable devices; and calculating a power budget comprising the difference between the instantaneous power draw and the rolling average power draw. In the event the power budget is positive, increasing power to at least a first subset of the plurality of controllable devices. In the event the power budget is negative, decreasing power to at least a second subset of the plurality of controllable devices.

Disclosed are a voltage switching circuit and a power adapter having the same. The voltage switching circuit comprises a first switching circuit having a first terminal receiving a first voltage from a first converter, and a second switching circuit having a first terminal receiving a second voltage from a second converter. Second terminals of the first and second switching circuits are electrically connected to form a switching terminal for outputting an output voltage. When the output voltage is required to be switched from the first voltage to the second voltage, the first switching circuit is controlled to be turned off and then the second switching circuit is controlled to be turned on, and when a voltage at the first terminal of the second switching circuit is higher than a preset voltage, the second converter is shut down or kept off.

Systems and apparatuses are provided in which outlets are coupled to a power distribution unit (PDU) or PDU module in various configurations. The outlets may be coupled to a recessed surface within a PDU housing. The outlets and recessed surface may be formed as part of a single mold. The outlets may be coupled to a printed circuit board that is at least partially disposed within the PDU housing. The outlets may extend away from the recessed surface or printed circuit board towards or beyond a front face of the PDU housing.

A driver circuit includes three sub-circuits. A first sub-circuit is configured to generate a drive current output by the driver circuit through an output node during first and second regions of operation and includes: a diode coupled to the output node and a first transistor, and a second transistor coupled to the first transistor and a current mirror. A second sub-circuit is configured to generate the drive current during the first and second and a third region of operation and includes: a third transistor coupled to the output node; and a fourth transistor. A third sub-circuit is configured to generate the drive current during the third region of operation and includes: a current source coupled to the current mirror and a buffer; and a fifth transistor coupled to the third transistor and the fourth transistor and configured to receive an output of the buffer.

Some embodiments may include a nanosecond pulser comprising a plurality of solid state switches; a transformer having a stray inductance, L.sub.s, a stray capacitance, C.sub.s, and a turn ratio n; and a resistor with a resistance, R, in series between the transformer and the switches. In some embodiments, the resonant circuit produces a Q factor according to $Q=\frac{1}{R}\sqrt{\frac{L_s}{C_s}};$
and the nanosecond pulser produces an output voltage V.sub.out from an input voltage V.sub.in, according to V.sub.out=QnV.sub.in.

A switching control circuit for controlling a power supply circuit that generates an output voltage from an alternating current (AC) voltage inputted thereto. The power supply circuit includes an inductor receiving a rectified voltage corresponding to the AC voltage, and a transistor controlling an inductor current flowing through the inductor. The switching control circuit controls switching of the transistor, and includes a first arithmetic circuit that calculates a first time period, from when the transistor is turned off to when the inductor current reaches a predetermined value, based on a first voltage corresponding to the rectified voltage, a second voltage corresponding to the output voltage, and the inductor current upon turning on of the transistor; and a drive circuit that causes the transistor to be on in a second time period corresponding to the second voltage, and causes the transistor to be off in the first time period.

A system to extract water from the environment and control temperature through heat transfer between two or more environments, with low energy consumption, for domestic, commercial, or industrial use, which comprises: at least one force unit (10), capable of increasing or decreasing the pressure of the thermal working fluid, wherein the force unit (10) comprises one cylinder (1), which comprises within at least one plunger (2) joined to a piston (27), wherein the piston (27) moves alternately through the is activation of a directional control valve (29) that receives hydraulic fluid from a hydraulic pump (32); at least one closed chamber connected to the cylinder (1), wherein that closed chamber comprises at least one tube (12) joined with at least one closed radiator (8a, 8b) wherein thermal working fluid is compressed inside that closed chamber, wherein the change from liquid to solid state or vice versa occurs, or from solid to another solid state or vice versa; and a control unit (11) that regulates the operation of the directional control valve (29) according to the temperature and pressure obtained from the closed chamber; a first (92) and a second (93) heat transfer circuit, wherein the valves (37as, 37ai, 37bs, 37bi; 81ai, 81bs, 81bi; 81as, 81ai, 81bs, 81bi) are operated by a control unit (11) and associated method.

High-efficient central chiller plant system with variable load by phase change material thermal energy storage, comprising a refrigeration unit and a phase change thermal energy storage. The refrigeration unit operates under the highest COP. If the refrigerating output is higher than the demand of cooling load, the phase change thermal energy storage stores energy by the phase change. Contrarily, if the refrigerating output cannot meet the demand of cooling load, the phase change thermal energy storage releases energy to supply the insufficient cooling load of the refrigeration unit. So that users can set the operation strategy of the refrigeration unit according to the usage statistics, and let the refrigeration unit operate efficiently with the cooperation of the phase change thermal energy storage, thereby effectively improving the energy efficiency of the system operation to save energy. Compared with the existing central chiller system, it saves energy more than 40%-70%.