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Efficient bidirectional mixed three-phase voltage rectifier control method

A technology of three-phase voltage and control method, which is applied in the field of electric power, can solve the problems of not comprehensively improving the comprehensive performance index of the hybrid rectifier, and not involving the multi-objective parameter optimization of the hybrid rectifier, so as to improve the control performance and use safety performance, high reliability The effect of durability, prolonging service life and efficiency of use

Active Publication Date: 2017-11-14
NORTH CHINA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Only the parameters of a single rectifier are optimized, and the comprehensive control performance of these single rectifiers is improved from different angles, but the comprehensive performance index of the hybrid rectifier is still not comprehensively improved, and there is no research on the multi-objective parameter optimization of the hybrid rectifier.

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  • Efficient bidirectional mixed three-phase voltage rectifier control method
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Embodiment Construction

[0030] Such as image 3 As shown, a high-efficiency bidirectional hybrid three-phase voltage type rectifier control method includes A rectifier 1, B rectifier 2, a first control system 3, and a second control system 4. The A rectifier 1 includes three-phase uncontrolled The rectifier 11, the super capacitor bank E1, the two-way three-phase triple DC / DC converter 12, the input end of the three-phase uncontrolled rectifier 11 is connected to the power grid through the air switch K1, the two-way three-phase triple DC / DC converter 12 The output terminal is connected to a load or an inverter; the load or inverter input terminal is also connected to a B rectifier 2, and the input terminal of the B rectifier 2 is connected to the grid; the two-way three-phase triple DC / DC converter 12 is connected to the first The control system 3 is controlled by it, and the B rectifier 2 is connected to and controlled by the second control system 4.

[0031] In this embodiment, the super capacitor gr...

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Abstract

The invention discloses an efficient bidirectional mixed three-phase voltage rectifier control method. The method comprises the steps that the current vector of the total input and the respective rectifier input, and the power grid voltage are measured; according to the voltage vector generated in a mixed three-phase voltage rectifier, the prediction value of future current is generated; the load active power is estimated through load reference current or detection load current; the prediction values are used to calculate future active power and reactive power; and comprehensive optimizing is carried out on the target parameters of the mixed three-phase voltage rectifier. Each parameter is evolved toward the direction of the target best coordination point, so that the mixed three-phase voltage rectifier acquires the best comprehensive performance index. According to the invention, an energy storage function is realized; energy waste is avoided; energy saving and environmental protection are realized; and the control and use safety performance of the entire product can be improved.

Description

Technical field [0001] The invention relates to the field of electric power technology, and in particular to a method for controlling a high-efficiency bidirectional hybrid three-phase voltage type rectifier. Background technique [0002] As power electronic devices such as converters are widely used in industrial production, transportation, aerospace, urban rail and other aspects, these power electronic devices basically all use uncontrolled rectifiers at the front end, which have relatively good power density and efficiency. Reliability is high, but there are shortcomings such as uncontrollable output intermediate DC voltage, input current distortion, high harmonic content, low power factor, and bidirectional energy flow. However, controllable rectifiers such as PWM rectifiers have low power density and are not suitable for applications with large-capacity loads. At the same time, the rating of power electronic devices is limited, that is, their withstand voltage and current a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/70H02M7/797H02M7/06H02M3/158H02M7/5387H02M7/46
CPCH02M3/158H02M7/06H02M7/062H02M7/46H02M7/5387H02M7/70H02M7/797
Inventor 邓永红张全柱马红梅赵立永孙英娟雷旻薛伟宁
Owner NORTH CHINA INST OF SCI & TECH
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