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Space vector pulse width modulation test device and DC bus voltage optimization method

A technology of pulse width modulation and DC bus voltage, which is applied to vector control systems, control electromechanical transmission devices, electromechanical devices, etc., can solve problems such as test devices that have not seen a large number of space vector pulse width modulation strategies, and achieve convenient system updates , improved speed, convenient experimental comparative research effect

Active Publication Date: 2016-07-13
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 bus voltage optimization method
  • Space vector pulse width modulation test device and DC bus voltage optimization method
  • Space vector pulse width modulation test device and DC 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. The DC power supply enters the inverter module through the DC voltage regulating unit, and the AC power supply enters the load module. The signal output terminals of each detection sub-module are connected to the control system module, and the DC power generated by the control system module is The voltage regulation control signal is output to the DC voltage regulation unit through the isolation drive, and the control system module outputs the control signal of the inverter module to the inverter module through the isolation drive, and the signal output terminal of the inverter module is connected to the permanent magnet synchronous motor; The system module outputs the generated control signal of the load module to the load module, and the load module is connected to the permanent magnet synchronous motor. Among them, the bus optimization method is to use the control system module to generate the DC voltage regulation control pulse signal under the DC bus optimal modulation strategy, control the DC bus voltage to work in the optimal state, and make it work in the state where the mean square value of the harmonic current is the smallest, reducing Small harmonic distortion, improve 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 the duty cycle constantly changing 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 Patents(China)
IPC IPC(8): H02P27/12H02P21/00H02K11/21
Inventor 陈国强康件丽赵俊伟陈水生杨伟东
Owner HENAN POLYTECHNIC UNIV