Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
12/04/2014 > 17 patent applications in 11 patent subcategories.

20140355308 - Overnight power adapter: Techniques and devices related to power adapters for mobile devices and, in particular, small form factor power adapters that allow a voltage droop during a power pulse exceeding a maximum output of the power adapter are discussed. For example, a small form factor and low voltage power adapter may include... Agent:

20140355309 - Selected-parameter adaptive switching for power converters: A selected-parameter adaptively switched power conversion system, for example, includes a counter for determining a period of an output oscillation a power supply switch, where the output oscillation starts when an output current generated by stored power of the power supply coil decays substantially to zero. An event generator for... Agent: Texas Instruments Incorporated

20140355310 - Full bridge dc-dc converter that applies current doubler: A full bridge DC-DC converter to which a current doubler is applicable is provided and includes a transformer and a switching circuit that converts a high direct current voltage into a high alternating current voltage and then outputs the high alternating current voltage to the primary side of the transformer.... Agent: Hyundai Motor Company

20140355311 - Galvanically isolated dc/dc converter and method of controlling a galvanically isolated dc/dc converter: A galvanically isolated DC/DC converter includes a first and a second side converter circuit coupled between a pair of first side DC terminals and a pair of second side DC terminals, respectively. The first side converter circuit has a first and a second switching element, each including a switch and... Agent: L-3 Communications Magnet-motor Gmbh

20140355312 - Isolated power supply, control signal transmission circuit and method thereof: In one embodiment, method of generating a control signal for an isolated power supply, can include: (i) generating a first ground noise component with a first predetermined proportionality to a ground noise signal; (ii) generating a first peak signal based on a first control signal having the ground noise signal,... Agent: Silergy Semiconductor Technology (hangzhou) Ltd

20140355313 - Resonant dc-dc converter control device: A control device is configured to, when the direct current output voltage of a resonant DC-DC converter is of a value that exceeds the maximum value that can be output in a fixed frequency control region, there is a switch from fixed frequency control to frequency modulation control. Because of... Agent: Fuji Electric Co., Ltd.

20140355314 - Storage time control: We describe a method of controlling turn off time delay of a switching device of a switch mode power converter (SMPC). The SMPC has an inductive component comprising an input winding coupled to receive power from an input; and a switching device to, when on, conduct input winding current. In... Agent: Cambridge Semiconductor Limited

20140355315 - Switching power supply device, switching power supply control method, and electronic apparatus: A switching power supply device includes a switching element to which a DC input is supplied, a frequency control circuit which controls a switching frequency of the switching element, a frequency detection circuit which detects the switching frequency of the switching element, and a duty ratio control circuit which controls... Agent: Sony Corporation

20140355316 - Control device for use with switching converters: The present application provides a control device for controlling a switching converting module to generate an output signal of constant output current from a rectified AC power supply signal. The switching converting module comprises a primary winding for receiving the rectified AC power supply signal and a power switch coupled... Agent: Si-en Technology (xiamen) Limited

20140355317 - Apparatus and a method for enhancing power output: An apparatus and a method for enhancing power output, the apparatus comprising: a thyristor having an anode, a cathode and a gate; and a controller connected to the gate, the cathode and the anode wherein, when the anode is provided with a voltage, the controller is configured for activating the... Agent: Dytech Energy Pte. Ltd.

20140355318 - Feed-in/feedback converter: A method of controlling a frequency converter comprises steps for measuring phase currents flowing in a three-phase supply network, for generating a first modulation space vector that comprises an angle that is synchronous to a supply voltage of the three-phase supply network and a determined modulation index as an amplitude,... Agent:

20140355319 - Ac-dc converter having soft-switched totem-pole output: An AC-DC converter has a totem-pole output circuit having first and second semiconductor switches, each having a channel coupled to a switching node and having a parasitic capacitance associated with the channel. An inductor has one terminal thereof connected to a switching node. First and second bypass devices are coupled... Agent:

20140355320 - Control circuit for ac-dc power converter: A control circuit for an AC-DC power converter includes a junction field effect transistor (JFET), a first resistor, a second resistor, and a third resistor. The JFET includes a substrate, a drain, a source, a gate, a first oxide layer, and a second oxide layer. The first oxide layer is... Agent: Richtek Technology Corporation

20140355321 - Single-phase power converter, three-phase two-phase power converter, and three-phase power converter: This power converter (1) is provided with: unit cells (11-M) having a semiconductor switch, a DC capacitor (C) and a charge/discharge current I/O terminal; a first arm (12-P) and a second arm (12-N) comprising multiple unit cells (11-M) connected to each other in cascade; an arm connecting unit (13) which... Agent:

20140355322 - Stacked switched capacitor energy buffer circuit: A stacked switched capacitor (SSC) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss. Thus, efficiency of the... Agent: Massachusetts Institute Of Technology

20140355324 - Inverter unit: An inverter unit includes a first circuit board and a second circuit board arranged at a predetermined space so as to face each other. Each of the first circuit board and the second circuit board has a main circuit forming area. A plurality of power devices are mounted in the... Agent: Kabushiki Kaisha Toyota Jidoshokki

20140355323 - Methods and systems for converting a dc-voltage to an ac-voltage: A device includes a full-bridge configured to convert a direct current (DC) voltage to an alternating current (AC) voltage. The full-bridge includes at least first, second, third and fourth bridge sections. Each of the first, second, third and fourth bridge sections includes a switch of a first type configured to... Agent:

  
11/27/2014 > 17 patent applications in 9 patent subcategories.

20140347893 - Llc bidirectional resonant converter and methods of controlling: A LLC bidirectional resonant converter comprising: a resonant tank, a first switching circuit connected to the resonant tank via first power conduits, a second switching circuit connected to the resonant tank via second power conduits, a switching element, and at least one switchable inductive element which is arranged by the... Agent:

20140347889 - Power conversion apparatus and power conversion method: A power conversion apparatus includes a primary side circuit and a secondary side circuit magnetically coupled to the primary side circuit via a transformer, and converts power between a primary side port of the primary side circuit and a secondary side port of the secondary side circuit, using switching of... Agent: Toyota Jidosha Kabushiki Kaisha

20140347890 - Power conversion apparatus and power conversion method: A power conversion apparatus includes: a primary side circuit; a secondary side circuit that is magnetically coupled to the primary side circuit by a transformer; and a control unit that adjusts a transmitted power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference... Agent: Toyota Jidosha Kabushiki Kaisha

20140347892 - Power conversion apparatus and power conversion method: A power conversion apparatus includes a plurality of power supply circuits each including a primary side circuit, and a secondary side circuit that is magnetically coupled to the primary side circuit via a transformer. Electrical power that changes according to a phase difference between switching of the primary side circuit... Agent: Toyota Jidosha Kabushiki Kaisha

20140347891 - Power conversion apparatus and power correction method: A power conversion apparatus includes a primary side circuit, a secondary side circuit that is connected to the primary side circuit through a reactor and magnetically coupled thereto through a transformer, and a control unit that adjusts power transmitted between the primary side circuit and the secondary side circuit by... Agent: Toyota Jidosha Kabushiki Kaisha

20140347894 - Current shaping for dimmable led: Aspects of the disclosure provide a circuit that includes a detector and a controller. The detector is configured to detect a firing start by a triode for alternating current (TRIAC) in a power supply. The controller is configured to control a switch in connection with a magnetic component in response... Agent: Marvell World Trade Ltd

20140347895 - Switching power-supply device: A switching power-supply device includes a COMP-voltage comparator circuit that compares a COMP-voltage obtained by performing phase compensation on the feedback signal, with a first threshold voltage which is a threshold value; and an intermittent-oscillation control circuit that, if it is detected by the COMP-voltage comparator circuit that the COMP-voltage... Agent: Sanken Electric Co., Ltd.

20140347896 - Dc link module for reducing dc link capacitance: A dc link module for a power circuit includes a first connector for connecting to a first power conversion circuit, a second connector for connecting to a second power conversion circuit, wherein the second power conversion circuit is connected to a load circuit arranged to at least intermittently operate as... Agent: City University Of Hong Kong

20140347897 - High voltage direct current transmission and distribution system: A direct current to alternating current inverter sub-system is for a HVDC distribution system. The DC to AC inverter sub-system includes an enclosure and a DC to DC galvanically isolated buck converter having a DC input electrically connectable to a HVDC cable and a DC output. A DC to AC... Agent: Eaton Corporation

20140347898 - Modular multi-level power conversion system with dc fault current limiting capability: A power converter module is provided. The power converter module includes a first converter leg and a second converter leg. The first converter leg includes a first switching unit and a second switching unit coupled in series. The second switching unit is disposed in a reverse orientation with respect to... Agent:

20140347899 - Control methods for power converters: A method of operating a power converter arrangement, the power converter arrangement includes a dc link and a dc load/source, an active rectifier/inverter having dc terminals connected to the dc link and is adapted to provide a variable dc link voltage between a maximum and a minimum limits, an interleaved... Agent: Ge Energy Power Conversion Technology Ltd

20140347900 - Interleaved converter: An interleaved converter configured by connecting a plurality of switching converter circuits in parallel includes an inter-inductor switch that selects whether inductors are connected in series, an input side switch that is connected to a connection point of the inductor and the inter-inductor switch and selects whether electric power is... Agent: Mitsubishi Electric Corporation

20140347902 - Method and apparatus for high efficiency ac/dc conversion of low voltage input: Embodiments of the subject invention relate to a method and apparatus for providing a low-power AC/DC converter designed to operate with very low input voltage amplitudes. Specific embodiments can operate with input voltages less than or equal to 1 V, less than or equal to 200 mV, and as low... Agent:

20140347904 - Power converter: A power converter comprises a first diode, a second diode, a first capacitor, a second capacitor, and an AC switch. The first diode has a cathode terminal connected to a DC positive bus. The second diode has a cathode terminal connected to an anode terminal of the first diode, and... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20140347901 - Rectifier circuit and power supply including the same: There is provided a rectifier circuit, including a rectifying unit rectifying input power to output rectified power corresponding to a magnitude of the input power and including a plurality of rectifier diodes, a first capacitor connected in parallel to any one of the plurality of rectifier diodes, a switch element... Agent: Samsung Electro-mechanics Co., Ltd.

20140347903 - Variable coil configuration system, apparatus and method: One or more variable configuration controller (VCC) systems may produce various combinations of series or parallel couplings of coils, winding or inductive elements of an electric machine such as a generator and/or electric motor. The VCC systems include a plurality of bridge rectifiers, and a first number of switches operated... Agent: Exro Technologies Inc.

20140347905 - Power supply circuit for gate driving circuit of a power converter: A power supply circuit for a gate driving circuit for driving semiconductor switching devices of a power converter that is configured to perform a DC to AC conversion. The power supply circuit includes a DC power supply including a plurality of serially-connected single DC power supplies, a flying capacitor type... Agent: Fuji Electric Co., Ltd.

  
11/20/2014 > 13 patent applications in 10 patent subcategories.

20140340938 - Flyback converter using coaxial cable transformer: Disclosed is a flyback converter using a coaxial cable transformer which includes: a flyback driving unit that supplies a primary current; a transformer that is formed by winding a cable, which has a plurality of inner conductors as a primary cable and an outer conductor enclosing the inner conductors as... Agent:

20140340940 - Integrated magnetics component: The present invention relates to an integrated magnetics component comprising a magnetically permeable core comprising a base member extending in a horizontal plane and first, second, third and fourth legs protruding substantially perpendicularly from the base member. First, second, third and fourth output inductor windings are wound around the first,... Agent: Danmarks Tekniske Universitet

20140340939 - Power converter control to avoid imbalance and transformer saturation: A switched-mode power conversion circuit can include a switch control circuit including switch control outputs coupleable to switches included in a bridge network, the switches controllably coupling power input nodes to an isolation transformer according to switch states established by the switch control circuit. A current monitoring circuit can be... Agent:

20140340941 - Droop current sharing power converter with controlled transitions between regulation set points: A regulated switching power converter generates a converter output having first and second regulated output values under corresponding operating conditions. The converter output transitions between the first and second output values in response to transition of a trigger signal in a transition window between first and second trigger values. A... Agent: Bel Fuse (macao Commerical Offshore) Limited

20140340942 - Resonant power conversion circuit: An apparatus and system for power conversion. In one embodiment, the apparatus comprises a transformer having a primary winding and a plurality of secondary windings; and a cyclo-converter comprising a plurality of switch pairs for converting an alternating current to an AC current, wherein each switch pair in the plurality... Agent:

20140340943 - Active valley fill power factor correction: A power converter is disclosed that includes an active valley fill (AVF) capacitor that is actively switched to provide current to a load during a portion of an alternating current (AC) input cycle. The current supplied to the load includes some current supplied by the AC input and some current... Agent: Atmel Corporation

20140340944 - Method providing short-circuit protection and flyback converter utilizing the same: A method providing short-circuit protection and a flyback converter utilizing the same wire are disclosed. The a method, adopted by a flyback converter, includes a transformer, including generating a feedback voltage according to an output voltage output from a secondary winding of the transformer; controlling a primary current through a... Agent: Neoenergy Microelectronics, Inc.

20140340945 - Power controller with pulse skipping: A controller for a power converter includes a drive circuit coupled to generate a drive signal in response to an error signal representative of a load of the power converter. The drive circuit includes a pulse skipping circuit coupled to generate a blanking signal in response to the error signal.... Agent:

20140340946 - Power switch driving circuits and power converters thereof: In one embodiment, a power switch driving circuit can include: (i) an upper switch having a first power terminal coupled to a voltage source, and a second power terminal coupled to a driving signal; (ii) a lower switch having a first power terminal coupled to the driving signal, and a... Agent:

20140340947 - Power supply device and power supply switching method: A power supply device (10) includes a plurality of constant current output circuits (14) that can supply power to a load (12). The constant current output circuit includes a pulse generation unit (20), and a PI feedback control unit (30) that performs feedback control on the pulse voltage output from... Agent:

20140340948 - Power conversion apparatus: A power conversion apparatus has a structure in which the negative terminal of an insulated power supply is connected to one of connection nodes of a negative side bus with U-phase, V-phase and W-phase lower-arm switching elements except the end-side ones. That is the negative terminal of the insulated power... Agent: Denso Corporation

20140340949 - Power converter and power factor corrector thereof: A power converter includes a rectifier and a power factor corrector. The rectifier is to be coupled to an alternating current power source and is configured to output a rectified signal. The power factor corrector includes a correcting circuit and a control circuit. The correcting circuit receives the rectified signal... Agent: Richtek Technology Corp.

20140340950 - Composite ac-to-dc power converter with boosting capabilities using t configuration: A boosting AC-to-DC converter An AC-to-DC converter may include a main rectifier, a first auxiliary rectifier, a second auxiliary rectifiers and a transformer assembly. The transformer assembly may include a set of primary windings arranged in a first multiphase configuration and connected to the main rectifier, a first set of... Agent: Honeywell International, Inc.,

  
11/13/2014 > 31 patent applications in 21 patent subcategories.

20140334185 - Switching power supply apparatus: A switching power supply apparatus includes an isolated converter that has efficiency characteristics in which power conversion efficiency at a rated load is higher than power conversion efficiency at a light load and that converts power-supply voltage into direct-current voltage to output the direct-current voltage; an FET that switches supply... Agent:

20140334187 - Current source inverter and operation method thereof: A current source inverter includes a controller, an input unit, a buffer unit, a modulating unit, and a commutator. The controller generates a switch control signal, an inverse switch control signal, a first pulse width modulation control signal, and a second pulse width modulation control signal. The input unit stores... Agent: Darfon Electronics Corp.

20140334186 - Energy-saving power converter: An energy-saving power converter includes a first switch unit, a transformer primary side, a transformer secondary side, a diode subunit, a switch subunit, a comparison unit, a current sensor, and a resistor. The transformer primary side starts storing energy when the first switch unit is turned on. The transformer secondary... Agent: Chicony Power Technology Co., Ltd.

20140334188 - Soft switching converter by steering the magnetizing current: A method is shown to create soft transition in selected topologies by controlling and designing the magnetizing current in the main transformer to exceed the output current at a certain point in the switching cycle.... Agent:

20140334189 - Bi-directional dc-dc converter: The present disclosure discloses a bi-directional DC-DC converter, comprising a primary-side inverting/rectifying module, an isolated transformer, and a secondary-side rectifying/inverting module, wherein the primary-side inverting/rectifying module comprises a first bridge arm composed of a first switching component and a second switching component connected in series and a clamping circuit comprising... Agent: Delta Electronics, Inc.

20140334191 - Dc-dc conversion device: A circuit of a full-bridge configuration using four semiconductor switch elements is used as a circuit on the primary side of a transformer in a DC-DC conversion device. With this configuration, it is possible to increase the turn ratio of a primary winding and a secondary winding of the transformer... Agent:

20140334190 - Variable frequency iteration mppt for resonant power converters: A method of maximum power point tracking (MPPT) uses an MPPT algorithm to determine a switching frequency for a resonant power converter, including initializing by setting an initial boundary frequency range that is divided into initial frequency sub-ranges bounded by initial frequencies including an initial center frequency and first and... Agent: University Of Central Florida Research Foundation, Inc.

20140334192 - Piezoelectric power converter with bi-directional power transfer: The present invention relates to a bi-directional piezoelectric power converter comprising a piezoelectric transformer. The piezoelectric transformer comprises an input electrode electrically coupled to a primary section of the piezoelectric transformer and an output electrode electrically coupled to an output section of the piezoelectric transformer to provide a transformer output... Agent: Noliac A/s

20140334193 - Self-oscillating loop based piezoelectric power converter: The present invention relates to a piezoelectric power converter comprising an input driver electrically coupled directly to an input or primary electrode of the piezoelectric transformer without any intervening series or parallel inductor. A feedback loop is operatively coupled between an output voltage of the piezoelectric transformer and the input... Agent:

20140334194 - Resonant transition controlled flyback: A new and useful method and inductive circuit is provided that provides a resonant transition control that involves shorting the winding of an inductor or transformer to delay the natural ringing transition. The present invention provides for controlling the natural ring of an inductive circuit has a choke that stores... Agent:

20140334196 - Control device for multiphase interleaved dc-dc converter and control method thereof: This instant disclosure provides a control method for interleaved multiphase Boost PFC converter. The interleaved multiphase Boost PFC converter has a master phase and a plurality of slave phases, the master phase operates in the critical conduction mode, the master of each slave phase has an inductor and a power... Agent: National Taiwan University

20140334195 - Managing leakage inductance in a power supply: An apparatus includes: a power supply circuit including at least a first stage having a push-pull circuit topology, the first stage including at least one transformer that isolates a primary side of the first stage from a secondary side of the first stage; a clamp circuit coupled to a center... Agent:

20140334197 - Power supply: The present disclosure describes a power supply with multiple operating modes, to detect a load condition of an electronic device, and to automatically change between the multiple operating modes to supply an output direct current (DC) signal to the electronic device based on the load condition detected by the load... Agent: Hewlett-packard Development Company, Lp.

20140334198 - Transformer shielding for common mode noise reduction in isolated converters: At least one shield member interposed between primary and secondary windings of a transformer and connected to the primary and/or secondary windings forms a distributed parasitic capacitance between the shield member and either the winding to which it is not connected or another shield member connected to that winding. Connections... Agent:

20140334199 - Five-level power converter, and control method and control apparatus for the same: A five-level power converter and a control method for the same are provided. The five-level power converter includes an inverter and at least a rectifier, where the rectifier includes at least one rectifier control circuit and four capacitors which are divided into two groups, each with two capacitors connected in... Agent:

20140334200 - Start-up circuit: Aspects of the disclosure provide a circuit. The circuit includes a depletion mode transistor coupled to a power supply and a current path coupled with the depletion mode transistor in series to provide a current to charge a capacitor. The current path has a first resistance during a first stage,... Agent: Marvell World Trade Ltd.

20140334201 - Snubber circuit to increase efficiency of power converters: A system including a converter and a snubber circuit. The converter converts an alternating current voltage into a direct current voltage and outputs the direct current voltage across an inductance and a switch connected in series. The inductance has a center tap connected to a node, which is connected to... Agent: Marvell World Trade Ltd.

20140334202 - Circuit for transferring power between a direct current line and an alternating-current line: A system, method, and apparatus is disclosed for interfacing and transferring power unidirectionally or bidirectionally between a direct current (DC) line and a single or multiphase alternating-current (AC) line for only half of any given phase and only a single phase at a time when polarity is matched between the... Agent:

20140334203 - Power converter and method for manufacturing power converter: A power converter includes a switch element, a snubber capacitor, and a connection conductor configured to connect the switch element and the snubber capacitor to each other, and at least a part of the connection conductor is arranged to be held between the snubber capacitor and an electrode of the... Agent: Kabushiki Kaisha Yaskawa Denki

20140334204 - Apparatus for parallel operation of pulse-width modulation power converters: There is provided a feedback value calculating section to calculate an average of voltage commands V1_cmd, V2_cmd after output limitation, as a feedback value. As a deviation used for an integral calculation of a current control section 6a, 6b, a sum obtained by adding a product to a deviation between... Agent: Meidensha Corporation

20140334205 - Synchronous rectification controlling circuit and synchronous rectification controlling method: In one embodiment, a synchronous rectification circuit can include: (i) a sampling circuit configured to sample a voltage across first and second power terminals of a synchronous rectifier, and to generate a first sampling voltage; (ii) an enable controlling circuit configured to delay the first sampling voltage, and to generate... Agent: Silergy Semiconductor Technology (hangzhou) Ltd.

20140334206 - Method for balancing capacitors in an inverter: The PWM modulating method comprises the following steps: detecting actual voltage values (Vc1, Vc1, Vc2, Vc3 . . . ) across bulk capacitors (C1, C2, C3) provided across input terminals of said inverter; calculating a duty cycle vector (D) based on electric parameters defining a rotating vector (V0) representing an... Agent: Power-one Italy S.p.a.

20140334207 - Controlling an electrical converter: A method, a computer-readable medium for controlling an electrical converter, and a controller are disclosed. The method for controlling an electrical converter can include receiving an actual switching state uk-1 of the electrical converter; determining a scenario tree for future switching states of the electrical converter based on the actual... Agent: Abb Research Ltd

20140334209 - Radio frequency power source having precise power detector: A radio frequency (RF) power source having a precise power detector includes a RF signal generator, a RF power amplifying circuit, a power supply circuit, and a precise power detector. The precise power detector includes a voltage mutual inductor, a current mutual inductor, a precise detecting module, and a microcontroller... Agent:

20140334208 - Synchronous rectification in the three-level inverter-converter topologies: A power module for a three-level power inverter/converter that employs synchronous rectification for use in a uni-directional active rectifier mode to reduce static losses and enhance efficiency across the circuit. Each synchronous rectifier can be a silicon carbide (SiC) power MOSFET connected in parallel with a SiC power diode, for... Agent: Hamilton Sundstrand Corporation

20140334210 - Current source rectifier modulation in discontinuous modes of operation: Systems and methods disclosed herein include a controller for a current source rectifier that is configured to facilitate operation in both continuous and discontinuous conduction modes. The controller comprises a discontinuous mode detection unit configured to determine when input current of the current source rectifier becomes discontinuous and a duty... Agent:

20140334211 - Power inverter implementing phase skipping control: A power inverter includes a DC/AC inverter having first, second and third phase circuitry coupled to receive power from a power source. A controller is coupled to a driver for each of the first, second and third phase circuitry (control input drivers). The controller includes an associated memory storing a... Agent: University Of Central Florida Research Foundation, Inc.

20140334212 - Semiconductor device and power converter: A semiconductor device of this invention (an IGBT with a built-in diode) includes: an n−-type drift layer 1; a p-type channel region 2 that is arranged in contact with the surface side of this n−-type drift layer 1; a gate electrode 5 that is provided in a trench T provided... Agent: Hitachi, Ltd.

20140334214 - Inverter device: In a switching circuit in which a power semiconductor switching element and a unipolar type diode are connected in parallel, the noise due to ringing is reduced. When the main circuit current flowing is equal to or less than a predetermined value, an Si-IGBT is switched and driven by a... Agent:

20140334215 - Resonant bi-directional dc-ac converter: A new and useful circuitry for DC to AC single stage conversion are presented, with the advantages of bi-directionality, resonant power transfer, high efficiency and simplicity. The output voltage dual polarity is achieved by means of control, synchronizing the output switch with one or the other of the primary switches.... Agent:

20140334213 - Switching arrangement for inverter, and inverter: Exemplary embodiments are directed to a method and switching arrangement for an inverter. The inverter including a positive direct current pole, a negative direct current pole, and a neutral direct current pole. The arrangement having a first controllable switch connected between the neutral direct current pole of the inverter and... Agent: Abb Oy

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