AC-DC hybrid double-fed asynchronous all-electric ship electric propulsion system and control method
A double-fed asynchronous, control method technology, applied in the direction of AC motor control, ship propulsion, motor generator control, etc., can solve the problems of high fault protection requirements and high cost of power electronic converters, and achieve the reduction of immature technology, Effect of reduced cost and reduced failsafe requirements
Active Publication Date: 2022-05-27
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an AC-DC hybrid double-fed asynchronous all-electric ship electric propulsion system and a control method, the purpose of which is to solve the problem of power electronic conversion in the medium-voltage DC integrated ship electric propulsion system. Vulnerability of inverters and high fault protection requirements and high cost of medium voltage DC bus-based energy transmission systems
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[0065] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.
[0066] The AC-DC hybrid all-electric marine electric propulsion system based on the doubly-fed asynchronous motor reduces the capacity of the power electronic converter and the DC bus by adopting the partial power decoupling system architecture of the AC-DC hybrid power distribution, thereby greatly reducing the power electronic The potential threat of converter vulnerability to system security redu...
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The invention discloses an AC-DC hybrid double-fed asynchronous all-electric ship electric propulsion system and a control method, which belong to the field of motors. The propulsion system of the present invention carries out electric energy transmission through the electric energy transmission paths based on the AC transmission line and the back-to-back power electronic converter respectively, and can flexibly adjust the ratio of AC and DC transmission according to the capacity of the power electronic converter and the operating mode of the ship, and the required capacity of the power electronic converter Smaller, reducing the dependence of system reliability and safety on power electronic equipment; back-to-back power electronic converters are only responsible for processing a small part of the total energy, and the DC transmission and distribution of the entire all-electric ship electric propulsion system is only for this Part of the energy, so the proportion of the DC transmission and distribution electronic system in the entire all-electric ship electric propulsion system has been significantly reduced, thereby greatly reducing its fault protection requirements, and also reducing the use of expensive and immature DC circuit breakers. Reduced cost of system failure protection.
Description
technical field [0001] The invention belongs to the technical field of motors and systems thereof, and more particularly relates to an AC-DC hybrid doubly-fed asynchronous all-electric marine electric propulsion system and a control method. Background technique [0002] The development of the shipbuilding industry has an important impact on global transportation and the world economy, and the related technologies of large ships have also received considerable attention in the military field, which is an important manifestation of the country's military strength. In order to meet the ever-increasing demand for ship electricity, all-electric ships based on electric propulsion systems have gradually become the ship production standard for large shipyards in the world, which is also the development direction of ships in the future. With the rapid development of modern power electronics technology, control theory and other related technologies, "medium-voltage DC integrated marin...
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IPC IPC(8): H02P6/00H02P27/05H02P9/30H02P21/22H02P21/14B63H21/17B63B79/30
CPCH02P6/005H02P27/05H02P9/305H02P21/22H02P21/14B63H21/17B63B79/30
Inventor 倪锴甘醇陈宇曲荣海
Owner HUAZHONG UNIV OF SCI & TECH