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Permanent magnet synchronous motor vector control system

A technology of permanent magnet synchronous motor and vector control, which is applied in the direction of vector control system, control system, motor generator control, etc. It can solve the problems of multiple power tubes, cascaded converter stability, immature reliability, and low reliability. problem, to achieve the effect of avoiding the intermediate DC link, ensuring the power factor of the grid side, and reducing the volume and weight

Inactive Publication Date: 2006-11-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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Problems solved by technology

However, after adding the single-phase PFC link, on the one hand, the volume and weight of the converter will be increased, and the price and cost will also increase accordingly. Stability and reliability

Method used

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  • Permanent magnet synchronous motor vector control system
  • Permanent magnet synchronous motor vector control system
  • Permanent magnet synchronous motor vector control system

Examples

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Example Embodiment

[0026] Such as figure 1 , figure 2 with image 3 As shown, the permanent magnet synchronous motor vector control system of this embodiment includes a matrix converter main power circuit, a matrix converter controller, an input filter, and a voltage detection circuit. Among them, the matrix converter main power circuit adopts the bidirectional switch module of IXYS (FI050-12BD), including three two-way switch modules, the three output terminals of each two-way switch module are connected to the one-phase winding of the permanent magnet synchronous motor, and the three input terminals of each two-way switch module are connected to the three-phase One phase of the AC power supply; the matrix converter controller includes a DSP and a CPLD. The DSP adopts TMS320LF2407, which is responsible for control signal processing and calculation. The CPLD adopts MACH4A5, whose function is to realize the conversion of switching signals and obtain modulation waves of 9 power switches. ; The input...

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Abstract

This invention discloses a vector control system for a permanent magnet synchronous motor including a primary power circuit of a matrix converter, a matrix converter controller, an input filter and a voltage test circuit in the following principle: the double space vector modulation of the matrix converter is to turn the converter equivalent to a AC-DC conversion part and a DC-AC conversion part with virtual DC, actually, the space vector control is carried out to the input current and output voltage. Advantage: 1, a double-space modulation strategy is applied to the matrix converter, which either guarantees the power factor at the network side or realizes AC-AC conversion directly to avoid the middle DC part and reduce its volume, 2, double-way flow is realized to energy of the converter to realize four quadrant work of magnet synchronous motor, 3, small volume and low cost.

Description

1. Technical field [0001] The invention relates to a permanent magnet synchronous motor control system, in particular to a system for controlling the permanent magnet synchronous motor by using vector technology. 2. Background technology [0002] Existing permanent magnet synchronous motor systems are driven by AC-DC converters to realize vector control. In order to meet the power factor of the grid side by using the AC-DC converter, a power factor correction circuit needs to be added on the rectification side. However, after adding the single-phase PFC link, on the one hand, the volume and weight of the converter will be increased, and the price and cost will also increase accordingly. Stability and reliability are not mature enough. However, if the three-phase PFC technology is used, the technology in this area is not perfect at present, and more power tubes are needed, the cost is high, and the reliability is low. 3. Contents of the invention [0003] 1. Purpose of t...

Claims

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Application Information

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IPC IPC(8): H02P21/36
Inventor 葛红娟张绍苏国庆周波王培强刘佰华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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