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Design of Single Phase Regulated Power Supply Based on Dual PWM Converters

Author: WangAiGuo
Tutor: JiangXueDong
School: Beijing Jiaotong University
Course: Power Electronics and Power Drives
Keywords: Compensated regulated power supply PWM Rectifier Inverter Sinusoidal pulse width modulation Digital Signal Processor
CLC: TM461
Type: Master's thesis
Year: 2009
Downloads: 341
Quote: 4
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Abstract


Instability caused by voltage fluctuations in the grid voltage , remote areas, lack of long-term voltage , high - precision equipment that require high stability power and other issues , this paper , by analyzing the advantages and disadvantages of the various types of exchange of power supply , the final choice compensation AC power supply as subject embodiment. Compared with other types of power of the same capacity , the capacity of the various components of the compensated regulated power supply circuit is much smaller , significant cost savings and reduced equipment size, weight . This article describes the dual PWM converter based compensation AC power supply , the main circuit topology , the core part of the single-phase voltage -type PWM rectifiers and single -phase full-bridge voltage source inverter main circuit and parameters calculation , working principle and control strategy are discussed in detail . Application PWM rectifier instead of a diode -controlled rectifier to reduce harmonic pollution , and can achieve the two-way flow of energy . Fixed switching frequency direct current control method of predictive current control PWM rectifier current response speed , voltage and current double closed-loop control to ensure the stability of the DC voltage and AC current tracking grid voltage . PI regulator voltage outer inner current loop ratio adjustment . The output voltage of the inverter is the output voltage of the the compensation voltage regulated power supply input voltage regulated power supply series stacking . In order to achieve a stable and reliable control of the output voltage of the inverter voltage single- closed - loop PI regulator , the amount of feedback to the output voltage rms . Simulation using Matlab / Simulink simulation tools , design power , verify that the parameters design and optimize further verify the control strategy and to lay the foundation for engineering design . For the the DSP TMS320LF2407A performance characteristics and peripheral resources , the design of the power system software control algorithms , digital control . The simulation and experimental results of a preliminary validation of the design to be able to meet the initial design specifications , and turned into the necessary preparations for the stage of practical .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Rectifier
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