56 results about "Thermal limit" patented technology

A water heating control and storage system, including an insulated tank for containing water to be heated. The tank has at least two heating elements, including an upper heating element and a lower heating element. An operation control device receives a demand response signal and enables each element to independently heat water for usage. A method for controlling a water heating storage system includes providing an insulated tank for containing water to be heated; providing an upper heating element with a thermostat and thermal limiting device and a lower heating element with a thermostat and thermal limiting device to heat upper and lower portions of water inside the tank; and providing a pair of switches for enabling each of the heating elements to independently heat upper and lower portions of the water for usage.

A system for accurately determining real-time Available Transfer Capability and the required ancillary service of large-scale interconnected power systems in an open-access transmission environment, subject to static and dynamic security constraints of a list of credible contingencies, including line thermal limits, bus voltage limits, voltage stability (steady-state stability) constraints, and transient stability constraints.

A control apparatus for a vehicular drive system arranged to electrically transmit a portion of an output force of an engine through an electric path, which control apparatus is configured to reduce loads of components associated with the electric path and to restrict a temperature rise of the components associated with the electric path, making it possible to reduce the required size of a cooling system.

Electric-energy restriction control means 84 is provided to place differential portion 11 in a non-differential state or to place switching clutch C0 or switching brake B0 in a partially engaged state, when an amount of transmission of electric energy through the electric path has increased to a thermal limit, so that a reaction force which corresponds to engine torque T_E and which must be received by first electric motor M1 is reduced, whereby an amount of generation of electricity by the first electric motor m1 is reduced, and the amount of the generated electric energy is reduced, making it possible to restrict the temperature rise of the components associated with the electric path and to reduce the required size of the cooling system for cooling those components and the loads of the components associated with the electric path.

A method for throttling a bus, e.g. a memory bus, may be used to compensate for potential inaccuracy of feedback information received for monitored characteristics, e.g. temperature, reported by sensors configured in monitored devices, e.g. memory devices, accessed through the bus. For example, in case of a memory bus, a memory controller may be configured to throttle the memory bus in a way that maximizes system performance while ensuring that the memory devices keep operating within their thermal limits. Readings obtained from the memory, or from close proximity to the memory, may indicate whether the temperature of the memory has crossed over one or more designated trip points, and one or more algorithms may be executed to perform throttling according to the readings and based on fixed and dynamic throttling modes. The memory controller may infer temperature changes taking place in the memory devices when successive readings are indicating that the temperature of the memory device has remained over a given trip point. Based on these inferences, the memory controller may then change the manner in which the bus is throttled.

Systems, apparatuses, and methods for performing temperature-aware task scheduling and proactive power management. A SoC includes a plurality of processing units and a task queue storing pending tasks. The SoC calculates a thermal metric for each pending task to predict an amount of heat the pending task will generate. The SoC also determines a thermal gradient for each processing unit to predict a rate at which the processing unit's temperature will change when executing a task. The SoC also monitors a thermal margin of how far each processing unit is from reaching its thermal limit. The SoC minimizes non-uniform heat generation on the SoC by scheduling pending tasks from the task queue to the processing units based on the thermal metrics for the pending tasks, the thermal gradients of each processing unit, and the thermal margin available on each processing unit.

An improved servo system for galvanometers, scanners and similar devices which uses digital processing to increase the dynamic range and provide greater effective resolution. The system provides digital control of a reference point that directly influences the excitation, which in turn directly influences the gain of the circuit. A high and low resolution switching path is provided to optimize dynamic range. Wide angle torque compensation improves uniformity of response at large angular deflections from zero. Improved thermal protection allows safe operation near system thermal limits. A graphical user interface allows adjustments and changes response on the fly for tuning due to input conditions or user control.

A system, method, and device for protecting an induction motor are disclosed. The exemplary system may have a module for determining the current drawn by the motor and a module for determining the state of the motor. The system may calculate a used thermal capacity based on a first formula when the motor is in an active state. The system also calculates the used thermal capacity based on a second formula when the motor is in an inactive state. When the used thermal capacity attains a threshold, the relay is tripped thus removing current to the motor and preventing motor from overheating. A method to derive thermal time constants from desired trip time limits (such as those defined by IEC standards or the thermal limit curves provided by motor manufacturers) is also presented. For example, the thermal time constants can then be used in tacking motor used thermal capacity throughout various motor states.

The invention concerns a controlling and monitoring device for avoiding damage through overheating in the case of flexible, textile surface heating elements which include at least two opposed contact conductors (3.1, 3.2) made of electrically conducting, non-insulated fibers or wires between which there extends a plurality of heating conductors (8) which are electrically connected to the contact conductors (3.1, 3.2) and to a current-voltage source. At least one additional conductor (1) is guided along at least one contact conductor over the heating conductors (8), wherein the additional conductor (1) is electrically insulated by a covering material and is connected to an electric or electronic evaluation switch (11). The coating material has a softening range which is above the standard heating temperature of the surface heating element, but below the permissible thermal limit temperature of the surrounding materials and of the base material (12), wherein, in the case of overheating, the coating material melts and wherein the heating conductors (8.1, 8.2), together with the additional conductor, form an electrical contact via which, for the purpose of controlling any overheating, an electric current flows to the electric or electronic evaluation unit which is connected to the current-voltage source.

This disclosure relates to a system and method for pulse generation. A system in accordance with the present disclosure may include a power dissipating element configured to receive power from a power source. At least one of the power source and the power dissipating element may be configured to generate a first signal. The system may further include a measuring instrument in communication with the power source. The measuring instrument may be configured to measure the first signal and to provide an input corresponding to a measured signal to a duty cycle limiter. The system may also include a pulse controller operatively connected to the power source. The pulse controller may be configured to control a duty cycle of the first signal and to receive a second signal from the duty cycle limiter. The pulse controller may be configured to disable at least one of the power source and the power dissipating element if the duty cycle limiter has determined that a maximum condition has been exceeded. Other embodiments are also within the scope of the present disclosure.

Several processors have specifications setting forth that each processor be coupled to a separate specified voltage regulator circuit. Instead, a number of specified voltage regulator circuit(s) is coupled to the several processors. The number of voltage regulator circuit(s) is less than the number of processors. The processors and voltage regulator circuit(s) are coupled to a module, and a thermal limit for the module is maintained because the several processors are coupled to the smaller number of voltage regulator circuits.

A signature connector adapter adapted to provide additional capabilities for a battery charger beyond not only charge batteries, but performing other user-friendly functions is presented. One embodiment utilizes a resistor disposed within a signature charger adapter to detect battery type and communicate the battery type to the battery charger. The signature connector adapter provides information such as, but not limited to, battery chemistry, battery voltage, charging capabilities, and thermal limits. The battery charger can then optimize charging performance. The signature connector adapter allows a plurality of household, construction, medical and military devices to be charged and/or powered via the battery charger. Devices such as lights, radios, cigarette lighters, and other such devices requiring specific levels or types of power can now be operated and charged with a single charger, since the signature connector adapter facilitates the charging system changing its output to match the device's requirements.

A system and method for controlling engine idle stop in a hybrid vehicle that uses predictive information to schedule engine stops with relatively longer stop duration time to gain more fuel savings and extend life of starter motor. More specifically, predictive information may be used to determine potential vehicle stop events, along with corresponding stop duration times, within a time window. An engine stop scheduler and/or controller may be configured to schedule stops of longer duration for optimal total engine stop time. Similarly, taking into account constraints imposed by the thermal limits of the motor, engine stop may be inhibited for predicted short events to allow engine stop at later longer stop events.

The disclosed embodiments provide an apparatus that controls a current drawn from an adapter by a computer system. During operation, the apparatus senses the current drawn from the adapter using a first current sensor and a second current sensor, wherein a response time of the first current sensor is faster than a response time of the second current sensor. Then, when the current sensed using the first current sensor exceeds a predetermined high-current threshold, the apparatus limits the current drawn from the adapter to a first predetermined current limit. Additionally, when the current sensed using the second current sensor exceeds a predetermined thermal-limit current, the apparatus limits the current drawn from the adapter to the predetermined thermal-limit current.

A technique for identifying, projecting, displaying, and enhancing the thermal capacity for an aircraft is disclosed wherein the thermal capacity is defined as the amount of time or range the aircraft can continue until a thermal limit is exceeded.

A device for detecting and/or measuring air flow in a cooling air flow passageway of an appliance using solid-state flow detectors. Heat generating components of the appliance are controlled in response to detected air flow. More specifically, the disclosure provides a device for detecting the presence of airflow and/or the approximate rate of airflow in a cooling channel of an appliance chassis. Based on this information, the appliance can perform safety-related tasks, such as de-energizing associated heating elements if there is too-low (or no) airflow detected. The solid-state flow detectors are easily fabricated, installed, and calibrated and avoids the calibration, fabrication and/or installation difficulties associated with sail switches and other such approaches such as thermal limit switches.

An apparatus for conductive heat transfer for electrical devices from the solder side of a circuit card assembly can significantly reduce the component temperature, thereby maintaining the electrical device below its thermal limit. The apparatus comprises a thermally conductive member mountable on an opposite face of a circuit board from a face of the circuit board on which an electrical component is mounted, the thermally conductive member operable to conduct heat generated by the electrical component away from the electrical component.

The invention is suitable for the technical field of transformers, and provides a transformer overload calculation method and system and terminal equipment. The method includes the following steps: obtaining basic parameter information of a transformer; obtaining current transient load capacity of the transformer; setting an overload temperature limit value and an environment temperature initialization value of the transformer; obtaining cooling efficiency of the transformer; and calculating overload thermal limit time of the transformer based on the basic parameter information, the current transient load capacity, the cooling efficiency, the overload temperature limit value, the environment temperature initialization value and preset target load capacity. According to the embodiments of the invention, the dynamic overload capacity of the transformer is calculated in real time by obtaining the current transient load capacity, and so the calculation problem of the overload thermal limittime of the transformer in transient changes is solved. Therefore, the participation of power grid dispatchers is reduced, personnel input cost is reduced, and the work efficiency of the transformeris improved.

Provide the technique for controlling nuclear power plant in which the thermal limit can be brought close to the full limit of operation restrictions by the automatic control, using the simple information outputted shorter cycle than that of the thermal limit.

The thermal limit monitor 40 includes: a first signal receiver 41 for receiving a first signal S1, a prospective time deriving unit 45 for deriving a prospective time f for the first signal S1 to arrive at a full limit G, a judging unit 46 for judging a remaining time to the prospective time f breaks a preset value m and then request a second signal S2 (outputs a request signal R), a compensating unit 44 for compensating the first signal S1 based on the second signal S2 received by the request, a first instruction transmitter 50 for transmitting a first instruction J1 to vary a rate factor of the first signal S1 and the second signal S2 with synchronizing the compensation; and a second instruction transmitter 51 for transmitting a second instruction J2 to hold the first signal S1 or the second signal S2 after arriving at the full limit G or a threshold K which right before the full limit G.

The invention discloses a high-temperature heat pipe wick heat transfer limit experiment device and method. The device comprises an upper sealing plate, a heating plate, a lower sealing plate, a left liquid sealing plate, a left gas sealing plate, a right liquid sealing plate, a right gas sealing plate, a pressing plate, a wick sample, a gas preheater, a first gas storage chamber, a first servo pump, a second gas storage chamber, a second servo pump, a working medium storage chamber, a vacuum pump unit, a pressure difference transmitter, a valve and the like. According to the invention, experimental research on the heat transfer limit of the wick of a high-temperature heat pipe can be realized, and visual research on the heat transfer limits such as capillary limit, entrainment limit and boiling limit of the high-temperature heat pipe can be obtained.