Abstract: A flying capacitor converter includes an inductor, a first switch and a second switch, a first diode and a second diode, a first capacitor and a second capacitor, a flying capacitor, a third diode and a third capacitor, a fourth diode, and a fifth diode. The inductor is coupled to a first node. The first switch and the second switch are commonly connected to a second node. The first diode and the second diode are commonly connected to a third node. The first capacitor and the second capacitor are commonly connected to a fourth node. The flying capacitor is coupled to the second node and the third node. The third diode and the third capacitor are commonly connected to a fifth node. The fifth diode is coupled to the third node and the fourth node.

Abstract: A hybrid drive circuit (100, 100?) drives a first characteristic transistor and a second characteristic transistor coupled in parallel to the first characteristic transistor according to an input signal (Sin). The hybrid drive circuit (100, 100?) includes a first turn-on path (Pc1), a first turn-off path (Ps1), a second turn-on path (Pc2), and a second turn-off path (Ps2). The first turn-on path (Pc1) and the second turn-on path (Pc2) produce a first delay time to delay turning on the first characteristic transistor. The first turn-off path (Ps1) and the second turn-off path (Ps2) produce a second delay time to delay turning off the second characteristic transistor.

Abstract: An inverter device includes a casing, a heat source element, a heat dissipation structure and a fan. The casing has a base and a cover covering the base. An internal and an external surface are defined on the cover. The inner surface is disposed corresponding to the base. The heat source element is disposed in the casing and arranged on the base. The heat dissipation structure is thermal connected with the internal surface. The fan is accommodated in the casing corresponding to the heat dissipation structure. An air flow in the casing is accelerated by the fan, and the heat dissipation structure absorbs heat from the air flow in the casing and thermal conductively transfers to the external surface of the cover. A heat dissipation efficiency of the inverter device is thereby improved and the inverter device is thereby more durable.

Abstract: An input connection device for an electronic device is provided. The electronic device includes a mother circuit board and a cabinet having a first wall. The input connection device comprises an insulation housing, a conductive connection unit, a circuit board, a switch, a first power wire and a second power wire. The insulation housing is disposed on the first wall and comprises a main body comprising a hollow channel. The conductive connection unit is disposed in the hollow channel and is engaged with the insulation housing. The circuit board is connected with the conductive connection unit directly. The switch has an input part and an output part. The first power wire is connected with the circuit board and the input part of the switch. The second power wire is connected with the output part of the switch and the mother circuit board.

Abstract: A smart grid integration system includes an AC grid and at least one power conversion apparatus. The power conversion apparatus includes a control unit and a communication unit. The control unit is coupled to the communication unit and receives a voltage signal corresponding to a voltage of the AC grid. The control unit decomposes the voltage signal into a plurality of frequency components and sets a fundamental component and a plurality of dominant harmonic components as a voltage operation signal. The communication unit receives a current signal corresponding to a current flowing through a circuit node through a current port and generates a current information signal. The communication unit receives the voltage operation signal transmitted from the control unit and calculates power information by multiplying the voltage operation signal and the current information signal.

Abstract: An inverter device includes a casing, a heat source element, a heat dissipation structure and a fan. The casing has a base and a cover covering the base. An internal and an external surface are defined on the cover. The inner surface is disposed corresponding to the base. The heat source element is disposed in the casing and arranged on the base. The heat dissipation structure is thermal connected with the internal surface. The fan is accommodated in the casing corresponding to the heat dissipation structure. An air flow in the casing is accelerated by the fan, and the heat dissipation structure absorbs heat from the air flow in the casing and thermal conductively transfers to the external surface of the cover. A heat dissipation efficiency of the inverter device is thereby improved and the inverter device is thereby more durable.

Abstract: A mounting assembly and an inverter assembly using the same are disclosed. The mounting assembly includes a waterproof component and a fixing component. The waterproof component includes a first side facing the inverter, a second side facing the wall surface, an opening and a gasket set. The opening runs through the first side and the second side. The gasket set is disposed around the opening. The gasket set abuts against the wall surface and the inverter. The inverter is electrically connected with a wire running through the opening. The fixing component is disposed on the wall surface and connected to the waterproof component. The fixing component includes a third surface facing the inverter, a fourth surface facing the wall surface, and a first engaging element. The first engaging element engages with a second engaging element of the inverter to mount the inverter on the wall surface.

Abstract: An electronic device includes a printed circuit board (PCB), a control circuit, and a sensing circuit. The control circuit is configured to determine whether over temperature occurs at one or more detecting points arranged at a first surface of the printed circuit board according to at least one voltage signal. The sensing circuit is arranged at a second surface opposite to the first surface of the printed circuit board and configured to sense the temperature of the one or more detecting points and correspondingly output the voltage signal to the control circuit.

Abstract: A power converting device includes a DC-DC converting circuit, a DC-AC converting circuit, and an insulation detecting circuit. The DC-DC converting circuit is configured to convert a DC input voltage to a DC bus voltage. The DC-AC converting circuit is electrically coupled to the DC-DC converting circuit and configured to convert the DC bus voltage to an AC voltage. The insulation detecting circuit is electrically coupled between the DC-DC converting circuit and the DC-AC converting circuit. The insulation detecting circuit is configured to detect a ground impedance value of the power converting device according to the DC bus voltage.

Abstract: A connection structure of an inductive element includes a circuit substrate, in inductive element, at least one connection wire, a supporting element, a containing element, a positioning element, a connecting element, and a locking element. The circuit substrate has a through hole. Each connection wire has a first end connected to the inductive element, and a fixed terminal is disposed on a second end of the connection wire. The containing element is formed on the supporting element to provide a containing space. The positioning element is contained in the containing space, and provides a positioning part. The connecting element has a first connecting part and a second connecting part. The first connecting part is connected to the positioning part to clip the fixed terminal. The locking element has a locking part. The locking part is connected to the second connecting part to lock on the circuit substrate.

Abstract: An electronic box fastening mechanism includes a box body, a first hook, a second hook and a resilient hook. The box body includes a mounting surface. The first hook and the second hook are at two opposite sides of the mounting surface, and they form an installation space for receiving a guide rail. The resilient hook is at one side of the second hook. The resilient hook includes a resilient arm, a contact section and a deformation space. When pressed by the guide rail, the contact section bends toward the deformation space to allow the guide rail to be inserted in the installation space, the contact section resiliently contacts the guide rail by using an elastic restoring force of the resilient arm, and the first hook and the second hook block the guide rail, so that the guide rail is prevented from being detached from the installation space.

Abstract: A waterproof gasket structure and its gasket shaping mold are provided. The gasket shaping mold includes a mold seat having a surface, and plural mold cavity ring-grooves concavely formed on the surface, each having two corresponding longitudinal groove sections. At least one longitudinal groove section has one or more inwardly bent wavy bent portions, and plural turning round corner portions are formed at the junction between the longitudinal groove section and the wavy bent portion, and each turning round corner portion has a radius equal to or greater than 6 mm. Therefore, the middle of the mold cavity ring-groove can be utilized effectively, and plural waterproof gaskets can be manufactured by the same gasket shaping mold while achieving the effects of reducing the mold volume, improving the manufacturing efficiency, and saving the manufacturing cost.

Abstract: An electronic device includes a printed circuit board (PCB), a control circuit, and a sensing circuit. The control circuit is configured to determine whether over temperature occurs at one or more detecting points arranged at a first surface of the printed circuit board according to at least one voltage signal. The sensing circuit is arranged at a second surface opposite to the first surface of the printed circuit board and configured to sense the temperature of the one or more detecting points and correspondingly output the voltage signal to the control circuit.

Abstract: A power inverter includes a plurality of bridge arms and a plurality of switching circuits. The bridge arms are electrically coupled to a first and a second dc node and a neutral point node, and respectively coupled to a corresponding one of a plurality of ac output nodes to provide an ac output voltage and output current via the ac output node. The switching circuits are respectively coupled between a corresponding one of the ac output nodes and the neutral point node. Each of the switching circuits includes a first transistor, a second transistor, a first diode and a second diode. The first and the second transistors are coupled in series to each other. The first and the second diodes are electrically coupled in inverse-parallel to the first and the second transistors respectively.

Abstract: A current detecting apparatus measures an input current or an output current of an electronic apparatus. The current detecting apparatus includes a current detecting module, a direct-current measurement module and a current detecting module. The current detecting module includes a coil configured to electromagnetically couple to a path of an input or a path of an output of the electronic apparatus to obtain a first voltage signal. The direct-current measurement module measures the path of the input or the path of the output to obtain a second voltage signal. The current detecting module converts the first voltage signal into a first current command, and converts the second voltage signal into a second current command. The first current command is an alternating-current component of the input current or the output current. The second current command is a direct-current component of the input current or the output current.

Abstract: An inverter apparatus includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch, a fourth switch, a first inductor and a second inductor. The first capacitor, the second capacitor, the first switch, the third switch and the first inductor form and have functions of a half bridge inverter. The first capacitor, the second capacitor, the second switch, the fourth switch and the second inductor form and have functions of a half bridge inverter. Therefore, the present invention obtains two kinds of voltages.

Abstract: A maximum power point tracking method includes: configuring a voltage tuning direction of a power converter by a process circuit such that the input voltage of the power converter changes in a positive or a negative trend; detecting the corresponding input voltage and input current of the power converter sequentially to obtain multiple powers; and when the powers decrease for N times continuously, change the voltage tuning direction of the power converter such that the change of the input voltage switches from positive trend to negative trend, or from negative trend to positive trend, in which N is an integer greater than or equal to 2.

Abstract: A power conversion system includes an input capacitor group, a first-converting circuit, a second-converting circuit, a first filter circuit, a second filter circuit, a third filter circuit and a control circuit. The input capacitor group receives a direct-current-input voltage. The first-converting circuit and the second-converting circuit are connected to the input capacitor group in parallel. The first filter circuit includes a first output inductor and a second output inductor. The second filter circuit includes a third output inductor and a fourth output inductor. The third filter circuit is connected between the first filter circuit and the second filter circuit. The control circuit separately controls the first-converting circuit and the second-converting circuit. The first output inductor is connected to the first-converting circuit, the second-converting circuit and the second output inductor.

Abstract: A maximum power point tracking method includes: configuring a voltage tuning direction of a power converter by a process circuit such that the input voltage of the power converter changes in a positive or a negative trend; detecting the corresponding input voltage and input current of the power converter sequentially to obtain multiple powers; and when the powers decrease for N times continuously, change the voltage tuning direction of the power converter such that the change of the input voltage switches from positive trend to negative trend, or from negative trend to positive trend, in which N is an integer greater than or equal to 2.

Abstract: A power inverter includes a plurality of bridge arms and a plurality of switching circuits. The bridge arms are electrically coupled to a first and a second dc node and a neutral point node, and respectively coupled to a corresponding one of a plurality of ac output nodes to provide an ac output voltage and output current via the ac output node. The switching circuits are respectively coupled between a corresponding one of the ac output nodes and the neutral point node. Each of the switching circuits includes a first transistor, a second transistor, a first diode and a second diode. The first and the second transistors are coupled in series to each other. The first and the second diodes are electrically coupled in inverse-parallel to the first and the second transistors respectively.