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Serial and parallel connection electrical bridge type impedance network power converter

A technology of power converter and impedance network, which is applied in the direction of converting AC power input into AC power output, output power conversion device, high-efficiency power electronic conversion, etc., and can solve the problem that the power converter cannot simultaneously increase or decrease voltage and current, Problems such as soft switching operation cannot be realized at the same time, so as to improve system input performance, reduce volume and weight, and reduce electrical stress

Active Publication Date: 2014-04-09
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0012] The purpose of the present invention is to overcome the shortcomings of the existing power converters that cannot simultaneously increase or decrease the voltage and current, and cannot simultaneously realize the soft switching operation, and propose a new type of bridge-type impedance network circuit, and a circuit comprising the electric current Power Converter with Bridge Impedance Network

Method used

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  • Serial and parallel connection electrical bridge type impedance network power converter
  • Serial and parallel connection electrical bridge type impedance network power converter
  • Serial and parallel connection electrical bridge type impedance network power converter

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Embodiment Construction

[0038] Figure 7 It is a schematic diagram of the bridge-type impedance network circuit of the present invention. Such as Figure 7 As shown, the bridge-type impedance network circuit is composed of the first inductance L1, the first capacitor C1, the second inductor L2 and the second capacitor C2 connected in series end to end to form an impedance network, and the network has four connection nodes: A, B, P1, P2, and the two-way switch 33 are diagonally connected to the two connecting nodes A and B of the impedance network to form a bridge-type impedance network circuit.

[0039] Figure 8 It is a structural schematic diagram of the hybrid bridge impedance network power converter 1 . Such as Figure 8 As shown, the hybrid bridge-type impedance network power converter is composed of a power source 10 , an input-side power converter 11 , a bridge-type impedance network circuit 12 , an output-side power converter 22 and a load 20 . The input-side power converter 11 and the o...

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Abstract

The invention relates to a serial and parallel connection electrical bridge type impedance network power converter which comprises an electrical bridge type impedance network circuit, wherein the electrical bridge type impedance network circuit is formed by connecting a first inductor (L1), a first capacitor (C1), a second inductor (L2) and a second capacitor (C2) in series end to end. A two-way switch (33) is diagonally connected to two connecting points (A,B) of the electrical bridge type impedance network circuit (12). A node (A) of the electrical bridge type impedance network circuit (12) is connected with an anode of an input side power converter (11); a node (P2) is connected with a cathode of the input side power converter (11); a node (P1) is connected with an anode of an output side power converter (22); and the cathode of the input side power converter (11) is connected with a cathode of the output side power converter (22). A power supply (10) is connected to a bridge arm midpoint of the input side power converter (11); and a load (20) is connected to the bridge arm midpoint of the output side power converter (22).

Description

technical field [0001] The invention relates to a hybrid bridge-type impedance network power converter, in particular to a hybrid bridge-type impedance network power converter including a bridge-type impedance network circuit. Background technique [0002] Power conversion processing such as AC-DC-AC is required in the fields of motor drive, new energy power generation and electric vehicles. Commonly used power conversion technologies include: AC-DC rectification technology and DC-AC inverter technology. The traditional power conversion system uses diode uncontrolled rectification in the AC-DC conversion stage, which will inject harmonics into the power grid and affect the power quality, and the energy can only flow in one direction, from the power supply side to the load side. In order to realize green power conversion, reduce power grid pollution, and improve power utilization efficiency, a power conversion system with high power factor and bidirectional flow of energy is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458H02M1/42H02M1/12
CPCY02B70/126Y02B70/10
Inventor 许海平
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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