摘要:
In one embodiment of the present invention, a power controller for an AC load comprises: a user interface adapted to interact with a user to produce at least one user interface signal; and a control module adapted to electrically couple a line voltage supply, electrically couple the AC load, and provide electrical power to the AC load as a function of the at least one user interface signal by implementing a low-flicker, cycle-skipping control algorithm, the control algorithm comprising a plurality of cycle patterns, the cycle patterns comprising a plurality of main power levels.
摘要:
A system and method for limiting the temperature of a burner for a cooking appliance without the use of a temperature sensor. The method includes the step of sensing the conduction state of a thermal switch and feeding back the sensed signal to control the duty-cycle (and thus “on” time) of bang-bang thermal limiting control. The power to the burner is reduced until the sensed duty-cycle (near 100%) cycling is reduced (lower frequency and amplitude) resulting in smoother power and temperature control. Preferably, the control system and method is implemented for controlling power applied to a burner for a glass-ceramic cooktop.
摘要:
A system for detecting temperature of a cooking utensil over a radiant cooktop includes a cooktop having an upper surface and a lower surface and a radiant heating element adapted to heat the cooktop. A temperature detector is disposed adjacent the lower surface of the cooktop and is adapted to detect temperature of the lower surface of the cooktop. The system also includes a thermal insulation barrier disposed intermediate the temperature detector and the radiant heating element.
摘要:
An apparatus is provided for detecting movement of a vessel positioned on a cooktop surface. The apparatus includes a resonant circuit that has at least an inductive loop positioned proximate to the cooktop surface. A signal conditioner is connected to the resonant circuit for conditioning signals received from the resonant circuit. A processor is connected to the signal conditioner and compares the conditioned signals received from the signal conditioner to a reference signal whereby detecting movement of the vessel.
摘要:
A power module includes one or more semiconductor power devices bonded to an insulated metal substrate (IMS). A plurality of cooling fluid channels is integrated into the IMS.
摘要:
A power module includes one or more semiconductor power devices bonded to an insulated metal substrate (IMS). A plurality of cooling fluid channels is integrated into the IMS.
摘要:
A power-converting apparatus, such as a power module, may include a base plate (16), a first direct current (DC) bus and a second DC bus (22, 24). A power semiconductor component (18, 20) may be electrically coupled to one of the buses, and may be disposed on a substrate (12, 14) physically coupled to the base plate. The power semiconductor component may be made from a high-temperature, wide bandgap material, and the substrate may be exposed to a heat flux based on an operational temperature of the power semiconductor component. At least a first capacitor (50) may be coupled across the first and second DC buses, and at least second and third capacitors (52) may be respectively coupled across respective ones of the first and second buses and an alternating current (AC) return path. Capacitors (50, 52) may each be located inside the power module to establish circuit connections sufficiently proximate to the first power semiconductor component to reduce a formation of parasitic inductances, and further may each be located physically apart from the substrate and thus not exposed to the heat flux.
摘要:
A method for storing data including: providing a first substrate having a plurality of micro-holograms therein, the micro-holograms being indicative of the data; providing a second hologram-supporting substrate; illuminating the plurality of micro-holograms in the first substrate through the second substrate, thereby producing a holographic pattern in the second substrate indicative of reflections of the plurality of micro-holograms in the first substrate; providing a third hologram-supporting substrate; and, illuminating the holographic pattern in the second substrate through the third substrate, thereby substantially replicating the plurality of micro-holograms in the first substrate in the third substrate.
摘要:
A cooling device for a power module having an electronic module disposed on a base plate via a substrate is disclosed. The cooling device includes a heat sink plate having at least one cooling segment. The cooling segment includes an inlet plenum for entry of a cooling medium, a plurality of inlet manifold channels, a plurality of outlet manifold channels, and an outlet plenum. The plurality of inlet manifold channels are coupled orthogonally to the inlet plenum for receiving the cooling medium from the inlet plenum. The plurality of outlet manifold channels are disposed parallel to the inlet manifold channels. The outlet plenum is coupled orthogonally to the plurality of outlet manifold channels for exhaust of the cooling medium. A plurality of millichannels are disposed in the base plate orthogonally to the inlet and the outlet manifold channels. The plurality of milli channels direct the cooling medium from the plurality of inlet manifold channels to the plurality of outlet manifold channels.
摘要:
A reactive power compensation system includes a distributed energy resource situated at a local location configured to also receive power from a remote location by a distribution feeder line. The distributed energy resource includes an inverter including power semiconductor switching devices and an inverter controller configured for controlling the power semiconductor switching devices so as to provide reactive power support to the distribution feeder line.