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One-step three-phase boosting matrix converter and topological structure thereof

A matrix converter and step-up technology, applied in the direction of converting AC power input to AC power output, output power conversion devices, electrical components, etc., can solve problems such as commutation complexity, and achieve safe switching and good output performance Effect

Inactive Publication Date: 2016-04-27
SHANGHAI INSTITUTE OF TECHNOLOGY +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

But it also has the problem that the highest voltage transmission ratio is only 0.866, and the commutation is complicated

Method used

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  • One-step three-phase boosting matrix converter and topological structure thereof
  • One-step three-phase boosting matrix converter and topological structure thereof
  • One-step three-phase boosting matrix converter and topological structure thereof

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Embodiment Construction

[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0015] see Figure 1 to Figure 6 , the present invention provides a technical solution: a one-step three-phase step-up matrix converter and its topology, including a main loop, a control loop and a detection loop, the main loop is composed of a power switch drive circuit, a one-step matrix converter Converter frequency boosting circuit, output filter circuit and load, the control loop is composed of DSP real-time duty cycle calculation system, CPLD commutation logic control system, the detection loop is composed of voltage and current detection circuit and current direction detection circuit, The voltage and current detection circuit is connected with the DSP real-time duty cycle calculation system, the current direction detection circuit is conne...

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Abstract

The invention provides a one-step three-phase boosting matrix converter and a topological structure thereof. The one-step three-phase boosting matrix converter comprises a main loop, a control loop, a detection loop, Sjk and S2. Compared with the prior art, the one-step three-phase boosting matrix converter has the beneficial effects that the voltage transmission ratio of the three-phase matrix converter can break through the bottleneck of 0.866 in the mechanism aspect, so that the voltage transmission ratio can reach and exceed 1, the purpose of improving the voltage ratio is realized; meanwhile, a voltage transmission ratio regulating circuit and a waveform modulating frequency changer circuit are combined into one because of the topological structure thereof, so that the function of improving the voltage while modulating the waveform is realized in one switch period, high frequency boosting and chopping modulation are coordinated and matched to really reach one-step realization of boosting and frequency change, turn-on and turn-off of each group of bidirectional power switches in a frequency conversion boosting circuit once in one period are guaranteed, frequent conversion steps among the bidirectional switches are simplified, the conversion reliability is strengthened, and safe switching among the switches is realized.

Description

technical field [0001] The invention is a one-step three-phase step-up matrix converter and its topological structure, and relates to the topological structure of a three-phase matrix converter and its corresponding control strategy and commutation strategy. Background technique [0002] Today, AC speed regulation has become an important means of realizing automation and energy saving in electric drive systems, and plays an increasingly important role in industrial production. As the core of AC speed control system, AC conversion technology has become one of the most important research directions of power electronics and motion control technology. Matrix converter is an advanced electric energy converter, which has the advantages of arbitrary adjustment of output frequency, bidirectional flow of energy, no need for large-capacity energy storage components, and can control the phase of input current and output voltage arbitrarily, making the input power factor arbitrarily adj...

Claims

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Application Information

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IPC IPC(8): H02M5/293
Inventor 陈文博胡凯敏邹元威金晶万衡
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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