Space vector pulse-width modulation test device and DC (Direct Current) bus voltage optimization method

A technology of pulse width modulation and DC bus voltage, which is applied in vector control systems, electromechanical transmissions, generators, etc., can solve problems such as experimental devices that have not seen a large number of space vector pulse width modulation strategies, and achieve a convenient system Update, facilitate experimental comparative research, and improve the effect of speed

Active Publication Date: 2014-01-01
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in all the published literatures, there is no experimental device that can integrate a large number of space vector pulse width modulation strategies

Method used

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  • Space vector pulse-width modulation test device and DC (Direct Current) bus voltage optimization method
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  • Space vector pulse-width modulation test device and DC (Direct Current) bus voltage optimization method

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Embodiment Construction

[0049] Such as image 3 As shown, the present invention discloses a space vector pulse width modulation test device, including a control system module 1, a detection module 2, an inverter module 3, a load module 4 and a permanent magnet synchronous motor 5, and the DC power supply passes through a DC voltage regulating unit 32 Entering the inverter 33, the AC power enters the load module 4, wherein the detection module 2 includes a bus voltage, a current measurement sub-module 21, a temperature and fault detection sub-module 22 of the inverter module, and a current measurement sub-module of the permanent magnet synchronous motor. Module 23, rotor position measurement submodule 24 and torque measurement submodule 25, the noise measurement submodule 26 of permanent magnet synchronous motor, the signal output end of each detection submodule is connected to the control system module 1, and the control system module 1 will produce The control signal of the DC voltage regulation is ...

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Abstract

The invention discloses a space vector pulse-width modulation test device. A DC (Direct Current) power supply enters an inverting module through a DC voltage regulation unit, and an AC (Alternating Current) power supply enters a load module; the signal output ends of detection submodules are connected with a control system module; the control system module outputs a generated DC voltage regulation control signal to the DC voltage regulation unit through an isolating driver, and the control system module outputs a generated inverting module control signal to the inverting module through the isolating driver; the signal output end of the inverting module is connected with a permanent magnetism synchronous motor; the control system module outputs a generated load module control signal to the load module; the load module is connected with the permanent magnet synchronous motor. A bus optimization method comprises the following steps: a DC voltage regulation control pulse signal is generated through the control system module under a DC bus optimization modulation strategy; DC bus voltage is controlled to work in an optimal state so as to work in a state with a minimal harmonic current mean square value. The space vector pulse-width modulation test device disclosed by the invention reduces the harmonic distortion and increases the utilization efficiency of electric energy.

Description

technical field [0001] The invention relates to the field of space vector pulse width modulation, in particular to a space vector pulse width modulation test device and a DC bus voltage optimization method. Background technique [0002] Inverters convert DC power into AC power with variable frequency and amplitude, due to figure 1 The inverter shown has the advantages of simple structure and convenient implementation, and has almost become the standard configuration of two-level three-phase inverters, and is widely used in electric vehicles and other industrial and agricultural production speed regulation occasions. The space vector pulse width modulation (SVPWM) used is based on the principle of "volt-second balance", and the high-frequency voltage pulse with a continuously changing duty cycle is equivalent to the command voltage according to the time average. [0003] Based on the voltage equivalent in the average sense, SVPWM only stipulates the time when the basic volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08H02P21/00H02P6/08H02P6/16
Inventor 陈国强康件丽赵俊伟陈水生杨伟东
Owner HENAN POLYTECHNIC UNIV
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