Abstract: A stator structure and a fan using the same are disclosure. The stator structure includes a base, plural stator magnetic poles, a circuit board, a first elastic element and a second elastic element. The base includes a front end and a rear end opposite to each other in an axial direction, and an outer peripheral wall connected therebetween. The plural stator magnetic poles are arranged on the base. The circuit board controls the plural stator magnetic poles. The first elastic element disposed on the outer peripheral wall includes a first head end, a first middle section and a first tail end connected and extended sequentially in a direction surrounding the axial direction. The second elastic element disposed on the outer peripheral wall and has a second head end, a second middle section and a second tail end connected and extended sequentially in a direction parallel to the axial direction.

Abstract: Power timing control devices and methods are disclosed. Each of one or more controlled chips is enabled based on a logical-AND-gated operation of primary and auxiliary enable signals to generate a control voltage based on a DC power voltage. In a signal timing sequence, a representative moment during the control voltage falling from high to low level occurs earlier than a moment when a level on a signal waveform of the DC power voltage falling from high to low level equals a minimum operation voltage level for the controlled chip. In this way, a power timing control operation can be performed under both light and heavy load conditions of a system, and a controller can be driven for powering up and off the system according to the control voltage, thereby effectively preventing the controller from abnormality or breakdown.

Abstract: A measurement method for measuring a position and a tilt angle of a target object includes the following steps. A pixel deviation between a first pixel and a second pixel of the target object is calculated. The pixel deviation is substituted into a curve of tilt angle versus pixel deviation to obtain the tilt angle of the target object. A first target curve and a second target curve are selected according to the first pixel, the second pixel and the tilt angle. A zero-tilt angle is substituted into the first target curve and the second target curve, respectively, to obtain a pixel at the zero-tilt angle. The pixel at the zero-tilt angle is substituted into a position curve to obtain the position of the target object.

Abstract: A magnetic device includes a magnetic core assembly, a primary winding, a first secondary winding, at least one second secondary winding and an auxiliary winding. The magnetic core assembly includes a first magnetic leg, a second magnetic leg and a third magnetic leg. The primary winding is wound around the second magnetic leg. The at least one secondary winding is wound around the second magnetic leg or the third magnetic leg. The auxiliary winding is electrically connected with an auxiliary inductor and wound around at least one magnetic leg. The primary winding is electrically connected with a first switch circuit, and the at least one secondary winding is electrically connected with a second switch circuit, wherein when switches of the first switch circuit turn off and switches of the second switch circuit turn on, an superposed AC voltage coupled by the auxiliary winding is applied on the auxiliary inductor.

Abstract: A vapor chamber includes a first plate body, a second plate body, a capillary structure, and a first thin capillary layer. The second plate body is disposed below the first plate body. The first plate body and the second plate body form a closed cavity. The capillary structure is disposed within the closed cavity. The capillary structure includes at least one column and at least one strip. The at least one strip has an opposite first surface and a second surface. The first surface faces the first plate body or the second plate body, and the at least one strip has a plurality of first grooves that are recessed from the first surface toward the second surface. The first thin capillary layer is disposed between the second plate body and the capillary structure.

Abstract: A power switching system includes a first power supply and a second power supply with three-phase AC power. The power switching system further includes a first power switch assembly, a second power switch assembly, and a three-phase transformer. The three-phase transformer includes a first winding, a second winding, and a third winding. The first winding, the second winding, and the third winding are connected in a delta structure to form three common nodes. A first common node is connected to a first switch and a fourth switch, a second common node is connected to a second switch and a fifth switch, and the third common node is connected to a third switch and a sixth switch.

Abstract: A headlamp assembly includes a light source, a first lens having a positive focal power, a second lens having a negative focal power, a third lens having a positive focal power, and a fourth lens having a positive focal power. A first side and a second side of the first lens opposite to each other are convex surfaces. A first side and a second side of the third lens opposite to each other are convex surfaces. The first, second, third, and fourth lenses are arranged from a light emitting side of the headlamp assembly to a light incident side of the headlamp assembly along an optical axis of the light source. The first, second, third, and fourth lenses define a system focal length, and a ratio of a focal length of the third lens to the system focal length is greater than 2.

Abstract: A power supply apparatus includes a power factor correction circuit, an LLC converter, an auxiliary conversion circuit, a secondary side controller and a voltage tracking circuit. The power factor correction circuit is used for converting a DC link voltage into a first voltage. The LLC converter includes a primary side circuit and a secondary side circuit, which are coupled with each other. The primary side circuit receives the first voltage. The first voltage is converted into an auxiliary voltage by the auxiliary conversion circuit. The voltage tracking circuit detects the auxiliary voltage and issues a detection signal to the secondary side controller. The secondary side controller tracks a ripple change of the DC link voltage and instantly generates a reverse waveform opposite to a waveform of the DC link voltage. The secondary side controller controls the operations of the LLC converter according to the reverse waveform.

Abstract: This disclosure relates to a medium-voltage isolation transformer. The medium-voltage isolation transformer includes a magnetic core, a low-voltage winding wound around the magnetic core, wherein the low-voltage winding is exposed in air; and a medium-voltage winding assembly including: a medium-voltage winding wound around the magnetic core; and a potting material body, wherein the medium-voltage winding is embedded inside the potting material body, the potting material body is filled with potting material, and the medium-voltage winding is configured by a litz wire whose external surface is covered by a first semi-conductive layer.

Abstract: A modular multilevel converter includes a phase leg including a upper arm and a lower arm connected in series, wherein the upper arm includes a plurality of arms connected in parallel, wherein one of the arms includes a chain link and an arm inductor connected in series, wherein the chain link includes a plurality of submodules connected in series, and wherein each submodule includes a half-bridge circuit or a full-bridge circuit; and a control module connected to the plurality of submodules, wherein the control module is configured to provide a voltage reference value for each arm by combining a common mode voltage reference value for all of the arms and a differential mode voltage reference value for each arm.

Abstract: A gripper base is provided, including a housing, a movable member, an elastic member, a position restricting mechanism, a guiding rod, and an engaging member. The elastic member is connected to the housing and the movable member. The position restricting mechanism is disposed on the movable member, and includes a groove and a block, wherein the groove surrounds the block. The groove has a top surface, and the block has an upper surface facing the top surface. The top surface has a protrusion protruding toward the block, and the upper surface has a concave structure. One end of the guiding rod is pivotally connected to the housing, and the other end of the guiding rod enters the groove. The engaging member is pivotally connected to the movable member.

Abstract: An energy storage system and an operating method thereof are provided. The energy storage system provides power regulation for the power grid. The energy storage system includes an energy storage unit, a measurement unit and a control unit. The measurement unit measures the operating frequency of the power grid, and the control unit receives the operating frequency measured by the measurement unit. When the operating frequency is greater than or equal to a first frequency boundary value and less than or equal to a second frequency boundary value, the control unit configures the regulation ratio of the power regulation to be a first operating ratio which is less than or equal to 0 and greater than or equal to the first input boundary value. The first frequency boundary value is less than the first frequency, and/or the second frequency boundary value is greater than the second frequency.

Abstract: A flying capacitor converter, a voltage converter and an energy storage system are provided. The flying capacitor converter includes a high-voltage side, a low-voltage side, a power switch unit, a current switch unit and a current detection unit. The high-voltage side is electrically connected with a first power source. The low-voltage side is electrically connected with a second power source. The power switch unit is electrically connected between the high-voltage side and the low-voltage side and includes three terminals and four power switches. The current switch unit is electrically connected with the high-voltage side, the low-voltage side and/or a common node. The current detection unit is electrically connected between a third terminal of the power switch unit and the common node. If the current detected by the current detection unit indicates that a short-circuit condition occurs, the power switch unit is disconnected from the high-voltage side and/or the low-voltage side.

Abstract: A housing positioning structure includes a housing, an upper supporting structure and a lower supporting structure. The housing includes a top plate and side plates vertically arranged on sides of the top plate. An accommodation space is enclosed by the top plate and the side plates. A horizontal line is formed at the lower edge of the side plate. The direction above and away the horizontal line is defined as an above-body direction, and the direction below and away the horizontal line is defined as a below-body direction. The upper supporting structure is located on the above-body direction side. The lower supporting structure is disposed on the side plates and extends toward the below-body direction side.

Abstract: A modeling device and a modeling method for three-dimension objects are provided. The modeling method includes loading a motion model of a model object, where the motion model indicates a motion level of each of a plurality of model components of the model object; receiving an object to be modeled including a plurality of components; reading a component attribute of each component; adjusting the motion level of each model component based on the component attribute of each component to generate a modeled component including the component attribute; and obtaining a modeled object after setting the motion level of each model component, where the modeled object includes the modeled components respectively corresponding to the model components.

Abstract: A connector is provided. The connector of the present disclosure includes a first barrier and a second barrier. The plurality of first connecting terminals of the socket connecting element are disposed between the first barrier and the bottom of the first main body. The plurality of second connecting terminals of the plug connecting element are disposed between the second barrier and the bottom of the second main body. When the first main body is rotated and moved through the first path so as to drive the first barrier and the second barrier to rotate and move, the second connecting terminal penetrates through the second hole and the first hole so as to contact with the first connecting terminal.

Abstract: A circular current suppression method, a switch control device, and a power conversion system are disclosed, which convert a difference between a voltage converted from a common-mode current of several input currents of a power factor corrector and a bus-voltage difference into a reference current, convert a difference between a reference voltage and a total voltage into a total DC current, and add cosine even-numbered-harmonic components of the reference current based on the total DC current, a target current, and one of several input currents to calculate a compensation current that is converted into a voltage as one of at least one switching command output to the power factor corrector, thereby suppressing the circular current in a configuration of parallel power conversion modules.

Abstract: A power supply is provided. The power supply includes a conversion circuit, an auxiliary power supply circuit, a detection circuit and a control circuit. The conversion circuit generates an output voltage according to an input voltage to power a load. The auxiliary power supply circuit generates an auxiliary voltage according to the input voltage. The control circuit estimates an output power of the power supply. The output power includes a load output power of the conversion circuit and an auxiliary output power of the auxiliary power supply circuit. When at least one of the input voltage, the output power and the environment temperature increases, the control circuit configures the conversion circuit to increase the output voltage correspondingly. When at least one of the input voltage, the output power and the environment temperature decreases, the control circuit configures the conversion circuit to decrease the output voltage correspondingly.