A deep water power supply device based on three-level inverter

A technology of three-level inverter and power supply device, which is applied to circuit devices, DC network circuit devices, output power conversion devices, etc., can solve the problem of large loss, affecting the reliability of deep-water high-voltage and high-power power supplies, and being unable to adapt to seabed observations. The growing performance requirements of the network, etc.

CN112350300BActive Publication Date: 2021-09-10INST OF ACOUSTICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-09-10

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Abstract

The invention discloses a deep-water power supply device based on a three-level inverter, which is arranged in a main base station on the seabed, and is used to convert the high-voltage direct current transmitted from the shore-based power supply to the main base station on the seabed through a submarine cable into medium-voltage electric energy. The deep water power supply device includes: a DC commutation module, a first main power conversion module, a second main power conversion module and a multi-functional load; wherein, the DC commutation module is used to receive double-terminal shore-based power and transmit it through a submarine cable The bidirectional high-voltage direct current is input into the first main power conversion module and the second main power conversion module in sequence after the input current is commutated; the first main power conversion module and the second main power conversion module are used for the input DC high voltage is used for power conversion to output DC medium voltage, which are respectively input to the multifunctional load and the main base station control cabin; the multifunctional load is used to keep the deep water power supply device running at a constant power, and is also used to control Do a self-test.
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Description

technical field

[0001] The invention belongs to the technical field of seabed observation network, and in particular relates to a deep-water power supply device based on a three-level inverter. Background technique

[0002] Due to the constraints of energy and communication bandwidth, traditional ocean observation cannot conduct long-term, continuous, multi-element, and comprehensive observation of the ocean. Therefore, a submarine observation network using modern submarine communication technology was proposed. The submarine observation network connects upward to shore-based power supply and communication equipment and downward to various submarine observation equipment through shore base stations, submarine cables, submarine main base stations, repeaters and other equipment, realizing high-power continuous power supply and observation of submarine observation equipment Real-time online acquisition of data. Therefore, the advantage of the submarine observation network is t...

Examples

Embodiment Construction

[0040] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, the present invention proposes a deep-water power supply device based on a three-level inverter, which mainly includes a DC commutation module, a first main power conversion module, a second main power conversion module and a multifunctional load. The composition structure is as follows figure 1shown. The connection method is as follows:

[0042] The DC high voltage transmitted by the shore-based power supply is connected to the input of the DC commutation module, and the output of the DC commutation module is connected to the input of the main power conversion module. The main power conversion module includes the first main power conversion module and the second main power conversion module. , the input is connected in series and the output is connected in parallel, and the output of the main power conver...