107results about "Electrical energy" patented technology

A method and apparatus to implement parallel current mode control that is suitable for digital and analog implementation. A duty cycle algorithm is composed of a voltage term and a parallel current term which depends on the inductor current change between the inductor current value at the beginning of a switching cycle and the reference inductor current value at the end of that switching cycle. Parallel current mode control can be applied to all DC-DC converters, including both non-isolated and isolated topologies. It can also be applied to AC-DC converters with power factor correction.

A universal input switching power supply has the rectifier, a signal detecting unit detecting a voltage of an external AC power and outputting a detecting signal, a PFC circuit converts a first DC power from the rectifier to a second DC power with different voltage according to the detecting signal; and a parallel and serial type DC to DC converter converting the second DC power with different voltage to a constant voltage of the third DC power. The parallel and serial type DC to DC converter has a transformer having a primary and secondary coils and physically changes a turn ratio of the primary and secondary coils of a transformer thereof according to a voltage ratio of the second DC power and the third DC power. Accordingly, the universal input switching power supply has good transforming efficiency at different AC power source conditions.

The invention relates to controlling a semiconductor processing system. Among other things, the invention relates to a run-to-run controller to create virtual modules to control a multi-pass process performed by a multi-chamber tool during the processing of a semiconductor wafer.

The different advantageous embodiments may provide an apparatus that may include a number of robotic machine groups, a mission planner, and a mission control. The mission planner may be capable of generating a mission for the number of robotic machine groups. The mission control may be capable of executing the mission using the number of robotic machine groups.

Systems, methods, and apparatus for evaluating load power consumption utilizing a power meter are provided. A power line signal for a structure associated with a power meter may be measured by the power meter. The power line signal may be decomposed by the power meter into respective power consumption data for a plurality of individual loads powered by the power line signal. The power consumption data for a load included in the plurality of individual loads may be compared by the power meter to expected power consumption data for the load. Based at least in part upon the comparison, the power meter may determine whether the load is operating within one or more desired parameters.

An LLC resonant converter implements a primary-side current feedback scheme. The LLC resonant converter includes an isolation transformer having a primary winding and at least one secondary winding and is controlled by a control circuit to operate at a switching frequency. The LLC resonant converter includes a first capacitor connected to the primary winding through AC coupling to sense a first voltage indicative of a current flowing through the primary winding of the isolation transformer, and a current sense circuit configured to receive the first voltage and to generate a feedback signal. The feedback signal is coupled to the control circuit to regulate the switching frequency in response to the current at the primary winding. In another embodiment, the current sense circuit is a current and voltage sense circuit configured to sense a voltage at the primary winding.

A power factor correction power supply unit for correcting a power factor includes a switching device, an input voltage detection circuit, an output voltage detection circuit, an error amplifier for outputting an error signal obtained by amplifying a difference between an output voltage detection signal and a reference voltage, an ON width generation circuit for generating an ON time width, an OFF width generation circuit for generating an OFF time width of the switching device, and a switching device driving circuit. The drive circuit conducts an ON / OFF control over the switching device upon receiving a turn-on timing signal for turning on the switching device as soon as the OFF time width is terminated and upon receiving a turn-off timing signal for turning off the switching device as soon as the ON time width is terminated.

A wireless electronic device includes a rechargeable battery, a receiver, and a shut down module. The rechargeable battery is at least partially charged. The receiver is configured to enable wireless communications for the wireless device. The receiver is capable of receiving wireless commands configured to cause corresponding functions to be performed in the wireless electronic device, which may include test functions, calibration functions, and shut down functions. The shut down module is configured to cause the wireless electronic device to initiate a shut down protocol according to a shut down command received by the receiver.

A control component and method for an energy management unit (EM) in an industrial automation arrangement which is configured to control one of a process, a subprocess and a system part of the industrial automation arrangement. Here, the control component is configured to detect the energy consumption of at least one part of the industrial automation arrangement, and the control component is configured to relate the detected energy consumption to at least one stored specification. The control component is also configured to generate a request for at least one automation component as the result of the relating operation. The control component is configured to transmit a message containing the request to the automation component and to receive an acknowledgement message from this automation component, where the request is directed to changing an operational state of one of the process, subprocess and system part that is controlled by the automation component.

The invention discloses a power supply having a single stage converter for performing power factor correction to reduce high-frequency harmonics in the input current and performing resonant conversion to achieve zero-voltage switching or zero-current switching for power conversion. The inventive single stage converter includes a switching circuit, a resonant circuit, a power control circuit, and a square wave generator. The switching circuit includes at least one switch and the resonant circuit includes a LLC resonant tank. The power control circuit includes a proportional differential circuit such as a power amplifier configured in a negative feedback topology, and the square wave generator is configured to generate driving signals based on the frequency modulation control signal generated by the comparison of the sensed input current and a user-defined power level input, thereby allowing the square wave generator to regulate the switching operation of the switching circuit.

A power factor correction converter capable of fast adjusting load functions to (a) convert a single-phase AC voltage into a DC voltage output; (b) control an input current and an input voltage for a correspondent electrical phase, namely the power factor that is 1; and (c) control a DC output voltage level. The converter is provided with a booster-based AC-DC converter as a core, in which the circuit includes a rectification circuit, a switching circuit consisting of a DC inductor and a power crystal, an energy-saving capacitor, a protection circuit, a microprocessor, and auxiliary circuits around. The power factor control, output voltage, and current control and filter modules function in the form of software program instead of conventional hardware circuits. Further, a powerful controller uses an output current feedback to enhance the DC output voltage to suppress the disturbance of load.

A device for conditioning power delivered to operate a motor is disclosed. The device includes a sealed housing having at least one input terminal extending through the housing and configured to receive an input power and at least one output terminal extending through the housing and configured to deliver an output power conditioned to power a motor coupled to the output terminal. The device also includes a filter inductor arranged in the housing and that has an input configured to receive the input power from the input terminal. The filter inductor output terminal has a tap that is extended through the housing to allow coupling of various external filter components, such as resistors capacitors and inductors. Accordingly, the filter inductor is configured to suppress voltage changes in the input power and deliver a filtered power to an output of the filter inductor. A transformer is included that is arranged in the housing and has an input configured to receive the filtered power from the output of the filter inductor. As such, the transformer is at least configured to electrically isolate the input terminal from the output terminal and deliver a conditioned power from an output of the transformer to the output terminal to power the motor coupled to the output terminal.

The invention discloses a steel-making manufacturing execution management system based on visualized heat tracking. The system is used for connecting a production and marketing system and a workshop in-situ control and comprises a heat tracking platform, an application server, a database server and a client end. By means of the steel-making manufacturing execution management system, molten steel condition of each heat can be tracked, and the system has the advantages that information integration is high, data analysis ability is strong, process trace feedback is timely and clear and the like. The system can be a link for enterprise computer integrated manufacturing system (CIMS) information integration, and therefore a manufacturing business environment which is fast in response and flexible and refined can be provided for a user, the user is helped to lower cost, deliver goods on time, improve product quality and service quality.

A thermal behavior model of a building may be constructed based on time series data. Based on the constructed thermal behavior model, forecasted zone temperature and energy usage for a next control time period may be predicted. An objective function may be constructed based on at least a dynamically priced grid energy cost, occupant comfort matrix, and one or more of: energy storage system cost and associated operational cost, and energy generation system cost and associated green house emission cost and associated operational cost. Constraints may be constructed based on at least the forecasted zone temperature values and energy usage values for the next control time period. A control profile of the HVAC system and sourcing decision of energy load of the HVAC system may be determined simultaneously based on the objective function and the plurality of constraints.

An emergency lighting system with central batteries power remote LED fixtures and exit signs, with all components integrated throughout a single or multiple buildings. Status reports are available on demand and the system will generate written records required by the Life Safety Code. A wide range of fixtures optimized for emergency lighting are available for interior and exterior applications and all can be monitored via internet, with report displays available on any digital device. Easy access to batteries, automated testing, high lumen outputs, efficient optics and long lamp life ensure the lowest possible life cycle costs.

The present invention relates to an intelligent switch capacitor, which comprises a shell. The shell is provided with a capacitor core internally. A temperature sensor is arranged on the capacitor core. A top end of the capacitor core is connected to an intelligent switch wiring board. The intelligent switch wiring board is connected to a single chip computer, a capacity-switch, a temperature measurement module, a current measurement module and a current harmonic component measurement module, wherein the capacitor switch is connected to the capacitor core in an inner triangle way. Beneficial effects of the present invention are: 1. A switch and a power capacitor are integrated into a whole, which can implement quick capacity-switching and cutting of the switch; 2. The capacitor has an electronic thermal protection function; 3. Possibilities of capacitor damages and power grid accidents caused by resonance of a PFC capacitor in a power grid system are eliminated completely; 4. A power capacitor loss is reduced.

In a switching power supply apparatus, multiplier 9 multiplies error voltage Verr generated in voltage error amplifier 8 and input voltage Vin to generate first threshold signal Vth1 in-phase with and similar to input voltage Vin and having an amplitude proportional to error voltage Verr. Second threshold signal generator circuit 14 generates second threshold signal Vth2 from first threshold signal Vth1. Switching device 7 is turned on and off so that the inductor current may change between first and second threshold signals Vth1 and Vth2. The switching frequency is detected and the proportional factor of first and second threshold signals Vth1 and Vth2 is changed to control the average switching frequency almost at a constant value for reducing the high frequency noises and the switching losses. The switching power supply apparatus facilitates reducing the noises and losses, improving the power factor thereof, and preventing the response performances thereof from being impaired.

A grid interconnection device 100 for interconnecting a power storage device to a power distribution system to which alternating current power is distributed, the grid interconnection device comprises a receiver 101 and a controller 104. The receiver 101 receives a second adjustment instruction transmitted before a first adjustment instruction. The controller 104 controls the power storage amount on the basis of the second adjustment instruction.

A PFC circuit comprises a first converter and a second converter and a multi-port electromagnetic device. The first converter has a first inductive element and the second converter has a second inductive element. The multi-port electromagnetic device. comprises a first magnetic core having a first closed flux path and a second magnetic core having a second closed flux path, with the first closed flux path being independent of the second closed flux path. The first inductive element of the first boost circuit comprises a first winding that electromagnetically couples the first magnetic core to the second magnetic core and the second inductive element of the second boost circuit comprises a second winding that electromagnetically couples the first magnetic core to the second magnetic core independent of the electromagnetic coupling of the first winding such that current application in one windings does not induce a substantial voltage in the other.

A method for dispatching buildings in a demand response program event including generating data sets for each of the buildings, each set having energy consumption values along with corresponding time and outside temperature values, where the energy consumption values within each set are shifted by one of a plurality of lag values relative to the corresponding time and outside temperature values, and where each of the plurality of lag values is different from other ones of the plurality of lag values; performing a regression analysis on each set to yield regression model parameters and a residual; determining a least valued residual from all residuals yielded, the least valued residual indicating a corresponding energy lag for the each of the buildings; and using energy lags for all of the buildings to generate a dispatch schedule for the demand response program event according to a prioritization of the energy lags.

Sensors on the integrated circuit are used to detect the current operating state of the chip, such as frequency, voltage, temperature characteristics, or variation in the integrated circuit manufacturing process. In response, the integrated circuit may choose to modify operational parameters (such as frequency, voltage, or power-down states) in order to dynamically and autonomously maintain an optimal performance and / or power-efficiency operational point.

A power control apparatus and a power control method for efficiently securing reserve power as a precaution against power failure are disclosed. The power control device includes a first communication unit configured to receive power information including power failure information through a power information network, a second communication unit configured to receive reserve power information including remaining power information from a power storage unit for storing reserve power, and a control unit configured to generate charging control information for storing reserve power in the power storage unit based on the power information and the reserve power information and to control storage of the power in the power storage unit.

Systems and methods are described for updating an influence model used to manage physical conditions of an environmentally controlled space. A method comprises operating an environmental maintenance system in a first production mode with the influence model until an event causes the system to enter a second production mode. In the second production mode a first actuator's operation level is varied and operation levels of other actuators are optimized. The influence model is adjusted based on the operation levels.

A switching power supply circuit including a phase angle detector circuit detecting a phase angle specified in advance based on a peak hold signal, a continuous conduction control setting circuit holding a voltage value corresponding to a peak current value of an inductor current detection voltage in every switching cycle and during a one-shot pulse when the peak is held and outputting a signal at the point of detection to determine to enable or disable a second set pulse set by the continuous conduction control setting circuit. When the second set pulse is disabled, a selector circuit carries out control using critical conduction control to turn on a switching element using a ZCD comparator detecting that the inductor current has reached zero, because of which the peak current does not increase.

A control method and system are provided for regulating operation of power factor correction rectifiers based on the non-symmetric boost converter topology. Control of both the front-end stage is enabled taking sinusoidal current from the utility network and a downstream converter providing isolated DC output voltage. Also provided are a method and system for reducing volume of reactive components in boost-based rectifiers with power factor correction. Flux density through the inductor is reduced with a biasing inductor current having a much lower frequency than the switching frequency of the converter.

A method for communicating information bundled in digital message packets via a digital network communication system is provided. The digital network communication system a sample source and each packet includes a header and a communication payload area. The method includes sampling the source at a first sample rate, selecting at least one decimation of the samples based on at least one of a plurality of algorithmic data rates and a channel bandwidth, determining a packet rate based on a plurality of algorithmic latency requirements, and transmitting the digital message packet containing decimated data on the digital network.