Ship shaft-driven power generation grid-connected system
A shaft power generation and shaft generator technology, which is applied to electrical components, single-grid parallel feeding arrangement, and AC network to reduce harmonics/ripples, etc., can solve the problem of many power stages, low conversion efficiency, and poor reliability. and other problems to achieve the effect of improving quality, enhancing boosting capability and ensuring stability
Pending Publication Date: 2021-12-10
RIZHAO GANGDA SHIPBUILDING HEAVY IND
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[0003]At present, the traditional grid-connected inverters for marine shaft power generation mainly include current source inverters and voltage source inverters. Due to the disadvantages of many stages, low conversion efficiency, high cost, and poor reliability, Z-source or quasi-Z-source inverters gradually replace traditional inverters with their unique impedance structure and are applied to ship shaft power generation and net system
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[0020] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.
[0021] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.
[0022] Such as figure 1 As shown, a ship shaft power grid-connected system with an improved high b...
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The invention discloses a ship shaft-driven power generation grid-connected system, and relates to the field of ship shaft-driven power generation grid-connected system inverter design. The output end of a ship shaft-driven power generator is electrically connected with the input end of a harmonic suppressor, the output end of the harmonic suppressor is electrically connected with the input end of a rectifier, the output end of the rectifier is electrically connected with the direct current input end of the improved high-supercharge-ratio ship shaft-driven power generation grid-connected quasi-Z-source inverter, and the output end of the improved high-supercharge-ratio ship shaft-driven power generation grid-connected quasi-Z-source inverter is electrically connected with a ship power grid; the harmonic suppressor is used for reducing harmonic waves of the output voltage of the axle generator, and the rectifier is used for converting the voltage output by the harmonic suppressor into smooth direct current; and the improved high-supercharge-ratio ship shaft-driven power generation grid-connected quasi-Z-source inverter is used for converting direct current into alternating current through SPWM pulse width modulation and reducing the influence of voltage harmonics through an LCL grid-connected filter.
Description
technical field [0001] The invention relates to the design field of an inverter for a ship shaft power generation grid-connected system, in particular to a ship shaft power generation grid-connected system. Background technique [0002] With the continuous rise of fuel prices and the aggravation of environmental pollution in today's world, the shipbuilding industry pays more and more attention to green environmental protection, high-efficiency and energy-saving technologies. At present, most of the power supply methods of ships are based on diesel engine power generation. A few ships use the main engine to drive the shaft generator to supply power. The ship shaft power generation system can make full use of the surplus power of the ship main engine, which not only reduces the use cost The working efficiency of the diesel engine has been significantly improved. At present, countries all over the world attach great importance to the development of ship shaft power generation ...
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IPC IPC(8): H02J3/38H02J3/01H02J3/24H02M7/5387H02M1/088H02M1/12
CPCH02J3/38H02J3/01H02J3/24H02M7/53871H02M1/088H02M1/12H02J2310/42Y02E40/40
Inventor 毕思明徐三华黄政朱浩然魏娟娟
Owner RIZHAO GANGDA SHIPBUILDING HEAVY IND