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One-way hybrid three-phase voltage source rectifier

A technology of three-phase voltage and rectifier, which is applied in the direction of electrical components, AC power input conversion to DC power output, irreversible AC power input conversion to DC power output, etc., which can solve the problems of low efficiency of TPVSR, large AC current harmonics, power Low density and other problems, to achieve excellent current tracking ability, reduce AC current harmonics, and improve the effect of power factor

Inactive Publication Date: 2017-05-31
纪新辉
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of low efficiency, low power density, low reliability, large AC current harmonics, and low power factor of TPVSR, the present invention proposes a unidirectional hybrid three-phase voltage rectifier

Method used

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Embodiment Construction

[0018] The unidirectional hybrid three-phase voltage type rectifier of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 2 As shown, the single-phase hybrid three-phase voltage rectifier of the present invention, \* MERGEFORMAT and MERGEFORMAT are three-phase symmetrical phase voltages; \* MERGEFORMAT , MERGEFORMAT and MERGEFORMAT are the three-phase currents input on the grid side; MERGEFORMAT MERGEFORMAT and MERGEFORMAT are the three-phase input currents of the diode rectifier; \* MERGEFORMAT , \* MERGEFORMAT and MERGEFORMAT are the three-phase input current of the VIENNA rectifier; MERGEFORMAT is the rectifier \* Boost inductor current of MERGEFORMAT; UDC is DC voltage; C1 and C2 are DC side capacitors; \* MERGEFORMAT is the load resistance; Ld1 is the small filter inductance on the AC side of the rectifier Z1; Ld2 is the rectifier \* The boost indu...

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Abstract

The invention discloses a one-way hybrid three-phase voltage source rectifier. The one-way hybrid three-phase voltage source rectifier comprises a three-phase diode rectifier bridge, a filter, a rectifier bridge composed of six IGBT switching tubes, a voltage sensor, a current sensor and a signal conditioning circuit. Due to the above structure, the outer ring is in a PI control mode; the inner ring is in a passive hybrid control mode; therefore, excellent current tracking capability, high robustness, steady control and constant output voltage can be realized; the efficiency, the power density and the reliability can be effectively improved; the alternating-current current harmonic can be reduced; and the power factor can be increased. By means of the one-way hybrid three-phase voltage source rectifier disclosed by the invention, the working efficiency of the rectifier in industrial use can be greatly increased; and a lot of manpower and material resources can be saved.

Description

technical field [0001] The invention relates to a voltage type rectifier, in particular to a single-phase mixed three-phase voltage type rectifier. Background technique [0002] The main application of a rectifier is to convert AC power to DC power. Since all electronic equipment needs to use DC, but the power company's power supply is AC, unless a battery is used, a rectifier is indispensable inside the power supply of all electronic equipment. Diode uncontrolled rectifiers and thyristor phase-controlled rectifiers have defects such as serious input current distortion, low power factor, and easy to cause electromagnetic interference, so they are gradually eliminated. The PWM rectifier will gradually replace the above two rectifiers due to its advantages such as fast system dynamic response, low harmonic content, and high power factor. With the development of rectifier technology, three-level PWM rectifiers can make power devices with low withstand voltage and low operatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M7/06
CPCH02M7/219H02M7/06
Inventor 纪新辉
Owner 纪新辉
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