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High-fault-tolerance power supply method in which all branches of electric generator operate independently

A technology of independent operation and power supply method, which is applied in the direction of controlling generators, protecting power generation through control, and electrical components, etc. It can solve problems such as insufficient comprehensiveness and inability to completely solve large current problems, so as to reduce losses, improve response speed and reliability , the effect of improving efficiency

Inactive Publication Date: 2015-04-01
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

The above-mentioned patents reduce the current flowing in the power supply system from different angles and to varying degrees, but they are not comprehensive enough to completely solve the problem of high current in the entire low-voltage power supply system

Method used

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  • High-fault-tolerance power supply method in which all branches of electric generator operate independently
  • High-fault-tolerance power supply method in which all branches of electric generator operate independently
  • High-fault-tolerance power supply method in which all branches of electric generator operate independently

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Embodiment 1

[0036] figure 1It is a highly fault-tolerant power supply method in which each branch of the generator operates independently. Its power supply strategy is that the lead wires of each branch of the multi-branch generator are independently connected to the wiring board of the motor. The rectification and inverter circuits supply power to the load independently. The generator set of this power supply method includes a prime mover 1, a multi-branch generator 2, an AC reactor 3, a rectification module, a DC reactor 4, a pre-charging circuit 5, an energy consumption braking circuit 6, a capacitor bank 7, voltage, power Sensor 9, PI regulator, fuel regulating mechanism and inverter etc. constitute. The energy flow direction of the power supply system is: the prime mover drives the multi-branch generator to rotate. The prime mover can be an internal combustion engine, a gas turbine, a water turbine, etc., and the generator is a permanent magnet synchronous generator. The three-phas...

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Abstract

The invention relates to a high-fault-tolerance power supply method in which all branches of an electric generator operate independently. According to the high-fault-tolerance power supply method disclosed by the invention, the electric generator adopts a multi-branch stator winding structure; each branch operates independently, and a three-phase alternating current emitted by each branch is rectified and inverted and then is supplied to a load respectively; a terminal voltage of the branch with highest output power is collected as a feedback signal for adjusting the rotation speed of a prime motor, and the terminal voltage is maintained constant. Compared with a method in which the electric generator is used as a traditional independent power supply for integrally generating and transmitting electricity in a unified manner, the high-fault-tolerance power supply method has the advantages that when the capacity of the electric generator is over megawatt, the defect that a high-current contactor exists in a large-capacity transmission line is overcome, the problems of current grade, cooling difficulty and the like when a frequency converter is used for supplying power are avoided, the key technical problem urgent to be solved for improving the operation reliability of an independent power supply system and enlarging the capacity are solved, and thus the high-fault-tolerance power supply method has high practical value.

Description

technical field [0001] The invention belongs to the field of electrical engineering and relates to a highly fault-tolerant power supply method in which each branch of a generator operates independently. Background technique [0002] This patent is funded by the National 863 Project (2012AA061303) and the National Major Scientific Instrument and Equipment Development Project (2012YQ05024207). In recent years, the shortage of electricity caused by economic development and unbalanced distribution of resources has become prominent, making the role of independent power sources more obvious in the development of the national economy. Compared with the centralized power supply, the independent power supply system presents outstanding advantages. It has the advantages of high reliability, easy modularization and easy maintenance. It is used as the main power supply or backup power supply in ships, aviation, hospitals, emergency and disaster relief , mining, petrochemical and many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/04H02P103/00
CPCH02P9/04H02P9/006
Inventor 冯桂宏何功飞张炳义张化光
Owner SHENYANG POLYTECHNIC UNIV
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