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The New-style Dynamic Braking Power Supply of Mine AC Lifter

Author: LiuYuanYi
Tutor: FuJiaCai
School: Heilongjiang Institute of Science and Technology
Course: Power Electronics and Power Drives
Keywords: Braking power Mine lifting machine DC / DC converter DSP Phase shift control
CLC: TD633
Type: Master's thesis
Year: 2008
Downloads: 183
Quote: 0
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Abstract


In this paper, to auxiliary shaft coal mine exchanges Jixi Mining Bureau Didao hoist control object , designed all-digital control core DSP for dynamic braking power prototype device , in a bid to solve the traditional power braking power discrete components , precision and debug complex brake reliability and maintenance difficulties , to promote the production of technological progress , improve mine exchanges to enhance the reliability of the machine control system . The paper discusses the dynamic braking power main circuit design method , digital control implementation of the FSP full-bridge zero - voltage and zero -current switching (ZVZCS) DC / DC conversion phase shifting dynamic braking power , speed feedback signal measuring power output current measurement into the DSP , after the digital PID operation as phase-shift angle control signal , to achieve control of dynamic braking power , the practice shows that the front axle arm to achieve zero voltage (ZVS), after the bridge arm zero current (ZCS), full-bridge zero - voltage and zero -current switching (ZVZCS) DC / DC power shift phase transformation braking power switch range , full load efficiency of 93.2% , the performance has been significantly improved to meet the requirements of coal mine production safety . This paper outlines the basic principle of the power brake system of mine hoist system solutions to select and braking power parameter requirements and technical specifications ; second section describes the system hardware circuit design : the choice of including the principle various devices of the main circuit and control circuit hardware design ; then discusses the process of digital implementation of the control circuit , double closed-loop control system theory , digital PID controller design, and system software processes ; final prototype design test , the draw system test waveform .

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CLC: > Industrial Technology > Mining Engineering > Mine electrician > Electrical equipment and automation of mining machinery > Upgrade machinery, electrical equipment and automation
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