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Control Method of Parallel Generating System

A power generation system and control method technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of poor reliability and system redundancy, etc., and achieve the effects of improving reliability, flexible capacity expansion, and easy realization of current sharing

Active Publication Date: 2017-08-11
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of poor reliability and system redundancy in the prior art, and propose a new control method for parallel power generation systems

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  • Control Method of Parallel Generating System
  • Control Method of Parallel Generating System
  • Control Method of Parallel Generating System

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] The present invention will be described below by taking the control of a DC / DC parallel power generation system as an example.

[0023] figure 2 It is the operating system diagram of the parallel power generation system of the present invention, the parallel power generation system 130 is composed of three modules 101, 102, 103, and each module is a DC / DC power generation system. The output voltage reference values ​​of the three modules 101, 102, 103 are respectively U dc1 * , U dc2 * , U dc3 * , and U dc1 * dc2 * dc3 *. The present invention automatically sets the module 101 with the lowest output voltage reference value as the main module through the program, and the modules 102 and 103 as the slave modules. The present invention adopts the double-closed-loop control mode of the voltage outer loop and the current inner lo...

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Abstract

A control method for a parallel power generation system. The control method is based on the traditional voltage outer loop and current inner loop double-closed loop, adding a limiter unit to the control channel, and the output value of the voltage regulator is processed by the limiter unit to be the output current given value. The limit value of the limiter unit of the slave module is dynamically adjusted. When the master module is working normally, the limit value of the limiter unit of the slave module is equal to the output value of the limiter unit of the master module, and the given value of the output current of the master and slave modules is consistent, which realizes The synchronous operation of the master and slave modules achieves current sharing control. When the master module fails, the module with the lowest output voltage reference value is determined as the master module to realize master-slave switching.

Description

technical field [0001] The invention relates to a control method of a parallel power generation system. Background technique [0002] With the development of technology, the power of the power supply system is increasing. In the face of current stress, thermal stress and the selection of expensive high-power power switching devices, the traditional single power supply can no longer meet the requirements. In order to meet the reliability, efficiency and power density requirements of the electrical system, multiple power generation systems are usually used to generate electricity in parallel. The parallel power generation system is generally composed of multiple modules with the same configuration in parallel. Each module is composed of a power circuit and a control circuit. The power circuit is also called the main circuit and is used to transmit the power of the power system. The control circuit is used to control the main circuit. The modules are combined only at the load,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
Inventor 赵峰王海波温旭辉
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI