Current hysteresis control digital implementation system for PWM rectifier

A technology of current hysteresis and system realization, which is applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc., which can solve problems such as noise interference, false triggering, and adjustment, and achieve real-time performance. The effect of good real-time performance and high control precision
CN103684031AInactive Publication Date: 2014-03-26苏州景新电气有限公司
7 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
苏州景新电气有限公司
Publication Date
2014-03-26
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a current hysteresis control digital implementation system for a PWM rectifier. TMS320F28069 DSP of Piccolo series of TI is adopted to achieve current hysteresis control, the functions of a chip dual-core processor are fully utilized, logic control, communication and three-phase current given generation for the PWM rectifier are achieved in a main CPU, a current hysteresis control strategy is achieved in a control rate accelerator, PWM pulses are generated to drive a power switch tube of a major loop, and the functions of the PWM rectifier are achieved. The control rate accelerator introduces the concurrent control loop execution function into a C28x series device. In this way, time delay existing from ADC damping to output is greatly reduced, and faster system response and a higher-frequency control loop are achieved. CLA is used for providing services for the control loop with strict time requirements, so that the main CPU freely processes other system tasks such as communication and diagnosis.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of power electronic control, in particular to a digital implementation system for current hysteresis control of a PWM rectifier. Background technique

[0002] The current PWM rectifier has been widely used in AC speed regulation, uninterruptible power supply, reactive power compensation, new energy and other fields due to its many advantages such as bidirectional flow of power, unit power factor operation at the grid side, and good sine degree of input current. Commonly used control strategies for PWM rectifiers include current hysteresis control, sinusoidal PWM control, and space vector PWM control. The current hysteresis control method has the advantages of simple control, fast response, high tracking accuracy, and good system stability, so it is a commonly used control method in the control link of the output current of the PWM rectifier. Traditional current hysteresis control is generally realized by an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More