A control system and control method of an indirect space vector matrix converter based on a 60° coordinate system

A matrix converter and space vector technology, applied in control systems, AC motor control, output power conversion devices, etc., can solve problems such as current and voltage waveform distortion, complex circuits, and narrow frequency modulation range
CN105356765BInactive Publication Date: 2018-02-27HARBIN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN UNIV OF SCI & TECH
Publication Date
2018-02-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a control system and control method of an indirect space vector matrix converter based on a 60-degree coordinate system. The control system includes a bilateral switch matrix circuit which consists of power devices having a bidirectional blocking capability and an automatic turning-off capability, a 3*3 switch array is formed, each output phase is connected with a three-phase input end through a bilateral switch, and a three-phase alternating current power supply is connected with the bilateral switch matrix circuit through an input filter with damping resistance. The control method includes the steps of: 1. calculating virtual direct current side voltage and virtual direct current side current in a virtual alternating current-direct current-alternating current structure; 2. determining an output voltage duty ratio and an output current duty ratio; 3. determining vector action time and a vector distribution condition; and 4. determining switching-on and switching-off of switching tubes. The control system of the indirect space vector matrix converter based on the 60-degree coordinate system is a stable, efficient and reliable electric power conversion device, and has the advantages of wide output frequency modulation and amplitude modulation, sinusoidal input and output waveforms, large degree of freedom of control, bidirectional flow of energy, fast dynamic response and the like.
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Description

Technical field:

[0001] The invention relates to a power conversion device, in particular to a control system and a control method of an indirect space vector matrix converter based on a 60° coordinate system. Background technique:

[0002] In the field of electrical transmission, the DC speed control system has the disadvantages of complex structure, high cost, inability to adapt to high-voltage, large-capacity, high-speed occasions, frequent maintenance, and environmental restrictions, while the AC speed control system has simple structure, low price, small moment of inertia, The advantages of fast dynamic response, small size, light weight, simple maintenance and adaptability to harsh environments have become a development trend in the field of electric drives. With the rapid development of power semiconductors and the maturity of PWM modulation technology, AC drive power has also been widely used in industrial automation, agricultural production and family life, and has ...

Claims

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