22results about "Dc circuit with intermediate ac" patented technology

Provided is a moving body used in a power transmission system that charges a storage battery mounted on the moving body with power generated by a power generation facility and feeds the power to a power receiving facility from the storage battery transported by the moving body. This moving body is provided with a battery control device that causes the storage battery to be charged with the supply of power based on a voltage value that does not reach a maximum voltage value of direct-current power between the power generation facility and the power receiving facility.

The invention discloses a high-power efficient direct current converter, and relates to the technical field of power electronics. The high-power and high-efficiency direct-current converter comprises an inverter circuit of which the input side is electrically connected with a direct-current input side and which is used for converting direct-current voltage input by the direct-current input side into alternating-current voltage to be output; the input side of any isolation transformation rectification circuit is electrically connected with the output side of the inversion circuit, and the isolation transformation rectification circuit comprises an isolation transformation module and a rectification circuit; the input side of the non-isolation adjusting circuit is used for being electrically connected with the second rectification output side of the corresponding isolation conversion rectification circuit, the output side of the non-isolation adjusting circuit is used for being electrically connected with a corresponding load, and the non-isolation adjusting circuit is used for adjusting the direct-current voltage provided by the second rectification output side and then outputting the direct-current voltage. According to the embodiment of the invention, DC voltage conversion can be effectively realized.

The invention belongs to the technical field of power supply architectures, and particularly relates to a computing power center power supply architecture and method based on a multi-level direct-current transformer, and the architecture comprises a medium-voltage multi-level direct-current converter which is connected with a high-voltage direct-current bus of a flexible direct-current power distribution station; the medium-voltage multi-level direct-current converter is formed by sequentially connecting a multi-level NPC converter, a high-frequency transformer and a rectifying circuit; wherein the input end of the multi-level NPC converter is connected with a high-voltage direct-current bus, the output end of the multi-level NPC converter is coupled to the rectifying circuit through the high-frequency transformer, and the output end of the rectifying circuit provides a medium-voltage direct-current bus. According to the power supply framework, the medium-voltage multi-level direct-current converter is adopted to convert high-voltage direct current into medium-voltage direct current, the medium-voltage multi-level direct-current converter is formed by sequentially connecting the multi-level NPC converter, the high-frequency transformer and the rectifying circuit in series, the rectifying link in a traditional alternating-current power supply framework is eliminated, and energy loss is reduced.

The embodiments of this application relate to a multi-motor integrated power circuit, a motor power control method and an electronic device; a power input conversion circuit converts a power input signal from a standby power source to a busbar power signal; a power factor correction circuit converts and superposes an AC input signal of the AC power source to / with the busbar power signal; a first isolation circuit converts the busbar power signal to an isolation output signal; a first switch sub-circuit converts the busbar power signal to a first AC signal; an isolation transformer converts the first AC signal to two or more second AC signals; a first power conversion circuit or an isolation transformer converts the isolation output signal or the second AC signal to a DC drive signal; a second power conversion circuit converts the isolation output signal or the second AC signal to an AC drive signal.

A method to control an automatic machine (1) for the production or the packaging of smoking, hygiene, food or pharmaceutical products; the automatic machine (1) comprising the steps of: controlling electric motors (5, 6) in an intermittent manner, cyclically alternating a motion state, in which each motor has an acceleration phase (AP) followed by a deceleration phase (DP), and a stop state, in which each electric motor (5, 6) is still; and at least partially supplying power, preferably for more than 50%, during the acceleration phase (AP) of each electric motor (5, 6), to the corresponding first static power converter (7, 8) by means of an electric current provided by the capacitor (17).

A method to control an automatic machine (1) for the production or the packaging of smoking, hygiene, food or pharmaceutical products; the automatic machine (1) comprising the steps of: controlling electric motors (5, 6) in an intermittent manner, cyclically alternating a motion state, in which each motor has an acceleration phase (AP) followed by a deceleration phase (DP), and a stop state, in which each electric motor (5, 6) is still; and at least partially supplying power, preferably for more than 50%, during the acceleration phase (AP) of each electric motor (5, 6), to the corresponding first static power converter (7, 8) by means of an electric current provided by the capacitor (17).

The invention relates to an aircraft power supply system (PSS) configured to power onboard electrical devices (D1, D2, D3, D4, D5, D6) comprising at least: - a high-voltage DC electrical subcircuit (HVDCN), - a low-voltage AC electrical subcircuit (LPACN), - a low-voltage DC electrical subcircuit (LPDCN), the system (PSS) further comprising a high-voltage battery switching circuit (HVBATSW), the system (PSS) being such that any power supply line to said low-voltage DC subcircuit, independent of said switching circuit (HVBATSW), is free of low-voltage batteries. Advantageously, this avoids battery redundancy, which is detrimental to the aircraft's weight (AC) and leads to increased complexity in its electrical system.

A field device having first and second input terminals connected to first and second wires of a network; first and second output terminals connected to first and second wires of a sensor unit; a rectifier unit having a first part arranged between the first input terminal and a first node and a second part arranged between the second input terminal and a second node, wherein the first node is connected to the first output terminal. A current measurement device measures a current between the second node and a third node. A voltage measurement device measures a voltage between the first node and the second node. A first semiconductor is arranged between the first node and the third node and configured to pass a bypass current so that the measured current comprises a two-part curve; and a second semiconductor arranged between the third node and the second output terminal.

The present disclosure relates to the field of field devices. The field device includes: a first input terminal configured to be connected to a first wire of a network; a second input terminal configured to be connected to a second wire of the network; a first output terminal configured to be connected to a first wire of the sensor unit; a second output terminal configured to be connected to a second wire of the sensor unit; a rectifier unit, a first portion of which is arranged between the first input terminal and the first node, and a second portion of which is arranged between the second input terminal and the second node; a current measuring device arranged between the second node and the third node; a voltage measurement means for measuring a measurement voltage between the first node and the second node; a first semiconductor disposed between the first node and the third node, and configured to pass a bypass current through the first semiconductor such that the measured current includes a two-part curve; and a second semiconductor disposed between the third node and the second output terminal.

The invention relates to the field of field devices, particularly to a field device (100) designed for providing a sensor unit (300) with energy from a 2-wire network (200). The field device (100) comprises: a first input terminal (210), configured for being connected to a first wire of the network (200); a second input terminal (220), configured for being connected to a second wire of the network (200); a first output terminal (180), configured for being connected to a first wire of the sensor unit (300); a second output terminal (190), configured for being connected to a second wire of the sensor unit (300); a rectifier unit (105), whose first part is arranged between the first input terminal (210) and a first node (110) and whose second part is arranged between the second input terminal (220) and a second node (120), wherein the first node (110) is connected to the first output terminal (180); a current measurement device (115), arranged between the second node (120) and a third node (130), for measuring a measured current (IM) between the second node (120) and the third node (130); a voltage measurement device (125) for measuring a measured voltage (VM) between the first node (110) and the second node (120); a first semiconductor (140), arranged between the first node (110) and the third node (130) and configured for passing through a bypass current (IB) through the first semiconductor (140), so that the measured current (IM), which is a sum of the bypass current (IB) and a load current (IL) through the sensor unit (300), comprises a two-part curve, with a negative linear current-voltage-correlation in a lower voltage-section and a constant current in an upper voltage-section; and a second semiconductor (150), arranged between the third node (130) and the second output terminal (190).

One embodiment of the present disclosure provides a flexible multi-port energy routing system including a first port configured to connect to an AC grid, a plurality of second ports configured to connect to a plurality of devices, a step-down transformer, a power converter stack, a step-down transformer, a power converter stack, and a third port. The step-down transformer may have a high-voltage side electrically connected to the first port and a low-voltage side. The power converter stack may include a plurality of power converter modules, each having a first converter bridge connected to the low-voltage side of the step-down transformer and a second converter bridge connected to one or more of the plurality of second ports. Each of the power converter modules may have a converter transformer connected between the first and second converter bridges. The first and second converter bridges can manage the flow of AC and DC power bidirectionally between the first, second, and third ports.

Provided is a moving body used in a power transmission system that charges a storage battery mounted on the moving body with power generated by a power generation facility and feeds the power to a power receiving facility from the storage battery transported by the moving body. This moving body is provided with a battery control device that causes the storage battery to be charged with the supply of power based on a voltage value that does not reach a maximum voltage value of direct-current power between the power generation facility and the power receiving facility.

Electrolysis system and method to operate said system notwithstanding occurrence of an adverse operational event are provided. Disclosed embodiments feature bypass circuitry configured to dynamically and quickly adapt the electrolysis system during occurrences of such adverse operational events and effectively inhibit the possibility of having to shut down the entire electrolysis system.

A converter for electrical connection to a three-phase electrical grid and a single-phase electrical grid is provided. The converter includes three DAB modules, each for converting a respective alternating current of a three-phase electrical grid. When connected to a single-phase electrical grid, the third DAB module is bi-directional such that it is operable to filter the power output of the first and second DAB modules. The converter further includes a filter capacitor in electrical communication with the third DAB module through a relay, wherein the relay is responsive to a controller to couple the third DAB module to the filter capacitor when the single-phase electrical grid is detected and to couple the third DAB module to a grid rectifier when the three-phase electrical grid is detected.

A muti-motor integrated power circuit includes: a power input conversion circuit configured to convert a power input signal from a standby power source to a busbar power signal; a power factor correction circuit configured to convert and superpose an AC input signal of the AC power source with the busbar power signal; a first isolation circuit configured to convert the busbar power signal to an isolation output signal; a first switch sub-circuit configured to convert the busbar power signal to a first AC signal; an isolation transformer configured to convert the first AC signal to at least two second AC signals; a first power conversion circuit or an isolation transformer configured to convert the isolation output signal or the second AC signal to a DC drive signal; and a second power conversion circuit configured to convert the isolation output signal or the second AC signal to an AC drive signal.

Electrolysis system and method to operate said system notwithstanding occurrence of an adverse operational event are provided. Disclosed embodiments feature bypass circuitry configured to dynamically and quickly adapt the electrolysis system during occurrences of such adverse operational events and effectively inhibit the possibility of having to shut down the entire electrolysis system.

A method that can include coupling one or more loads of the system to a common direct current (DC) bus, measuring a voltage of the common DC bus, estimating a nominal voltage (Vnom) for the common DC bus, and determining a set point (DCSP) for each inverter based on the Vnom, where the inverters control a flow of DC current through the inverters based on the DCSP. A method that can include coupling one or more loads of the system to a common DC bus, measuring a voltage of the common DC bus, detecting a change in the voltage, managing a DCSP for each of inverters, where the inverters are configured to control the DC current flowing through the one or more inverters based on the DCSP, and managing DC current flowing through the inverters coupled between the ESS and the common DC bus.

An apparatus and a system for power conversion and a method for operating the apparatus are provided. The apparatus comprises: at least one first partial power converters (PPC) string connected in parallel with a DC bus, comprising at least one series-connected PPC and at least one PPC set, wherein each PPC set includes more than one parallel-connected PPCs, wherein, in each PPC set, a respective output of each PPC of the more than one parallel-connected PPCs is connected in parallel to form the output of the PPC set, and wherein, in the first PPC string, a respective output of each of the at least one series-connected PPC and the at least one PPC set is connected in series, and wherein, for each PPC of the at least one series-connected PPC and the more than one parallel-connected PPCs in the at least one PPC set, the input of the PPC is connected to a corresponding power source, and the input of the PPC and the output of the PPC have one common terminal.

A flexible multiport energy routing system having a first port configured to connect to an AC grid, second ports configured to connect to devices, and a power converter stack. A step-down transformer can be included and have a high voltage side electrically coupled to the first port and a low voltage side. The power converter stack can include power converter modules each having a first converter bridge connected to the low voltage side of the step-down transformer and a second converter bridge connected to one or more of the second ports. Each of the power converter modules can have a converter transformer connected between the first and second converter bridges. The first and second converter bridges can bidirectionally manage AC and DC power flows between the first, second, and third ports.

Energy storage systems for charging an electronic device and methods of operating the same are disclosed. The energy storage system includes an AC bus, a DC bus, a plurality of batteries, a plurality of breakers, a plurality of inverters, and a controller operatively coupled with the batteries and the breakers. The method includes calculating, by the controller, an amount of power necessary to charge the electronic device; operating, by the controller, the breakers such that the batteries of a discharging station is configured to discharge through a charging station; and charging the electronic device using the batteries.

The invention relates to a converter system for transmitting electrical power, a vehicle comprising such a converter system and a method for transmitting electrical power in such a converter system. The converter system comprises a first DC-DC module, a second DC-DC module and a first control unit. The first DC-DC module is connected to a first high-voltage interface of a high-voltage system and to a first low-voltage interface of a low-voltage system. The second DC-DC module is connected to a second high-voltage interface of the high-voltage system and to a second low-voltage interface of the low-voltage system. The first high-voltage interface and the second interface are independent from each other. The first control unit is connected to the first DC-DC module and is configured to supply power by means of the second DC-DC module in case of a malfunction of the first DC-DC module.

The invention relates to an electrolysis system including an electrolysis plant and a power supply source with a direct voltage output and including a central supply line, wherein the central supply line is connected to the direct voltage output of the power supply source such that a direct current can be fed to the central supply line, where a central DC high-performance strand designed for the direct voltage is provided, to which high-performance strand the electrolysis plant is connected via the central supply line, wherein at least the power supply source and the DC high-performance strand are designed as a network insulated from ground. The invention also relates to the use of an insulated DC network in an electrolysis system.