The Design of Single Phase AC Regulated Power Supply with PWM Chopping Control Compensation

2011 ◽  
Vol 383-390 ◽  
pp. 6880-6885
Author(s):  
Yu Quan Ma ◽  
Li Hong Zhang ◽  
Shu Fen Han ◽  
Dong Dong Song
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Simple Structure ◽  
Sampling Technique ◽  
Filter Parameter ◽  
Dc Voltage ◽  
Output Filter ◽  
And Control ◽  
Filter Capacitor ◽  
Fast Dynamic

In view of the large volume and complex control circuit of current AC regulated power supply, a unipolar AC regulated power supply with chopping control compensation is designed, and the calculation method of output filter parameter of chopping circuit is given. In the system, MCU of STC12C5A62AD with 8-bit A/D input and PWM output is adopted, by which not only simple structure and control but also fast dynamic response are get; DC voltage sampling technique is adopted, so sampling frequency is up to 12.8kHz, sampling precision is high too; PWM chopping frequency is 4kHz, so capacity of filter capacitor and inductors are small, and harmonic is little. Experiment results of prototype show that the system has high precision of output voltage and greater practical value.

H∞ Control to the BUCK-Type Switching Power Supply with Small Perturbation

2013 ◽  
Vol 347-350 ◽  
pp. 1358-1362
Author(s):  
Zi Сheng Li ◽  
Li Xu ◽  
Bao Shan Yuan
Keyword(s):  
Power Supply ◽  
Current Control ◽  
Control Mode ◽  
State Variables ◽  
Switching Power Supply ◽  
Small Perturbations ◽  
Switching Power ◽  
Current Sampling ◽  
Output Filter ◽  
Filter Capacitor

The purpose in this paper is the design of the control to switching power supply for small perturbations. By the theoretical analysis and calculation, with the output filter inductor current and filter capacitor voltage switching power supply as two state variables, the conclusion is that control of the output filter inductor current sampling do well in the anti-jamming. The simulation is made for verification. And comparing the results, the current control mode shows a very strong anti-interference ability.

scholarly journals Simulation of Single Phase Switching Capacitor 49 Level Inverter with Reduced THD

2019 ◽  
Vol 8 (6) ◽  
pp. 837-841
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Matlab Simulation ◽  
Phase Switching ◽  
Dc Voltage ◽  
Dc Power ◽  
Power Switches ◽  
Multi Level ◽  
Switched Capacitor Converter

The study of single phase Switched Capacitors Multi Level Inverter (MLI) is used with Switched Capacitor Converter (SCC) units. The SCC is used to increase the input DC voltage by connecting capacitor in string and shunt. This increassed DC link voltage is converted in to multilevel i.e. 49 level AC output. This SCMLI topology is used to reduce the number of switches, diodes, isolated dc power supply and Total Harmonic Distortion (THD). The SCMLI provides 49 level output voltage using 14 power switches and 3 isolated power supply. The performance of the SCMLI topology is confirmed by using MATLAB simulation result

A Power Control Method With Simple Structure and Fast Dynamic Response for Single-Phase Grid-Connected DG Systems

2013 ◽  
Vol 28 (1) ◽  
pp. 221-233 ◽  
Author(s):  
Sayed Ali Khajehoddin ◽  
Masoud Karimi-Ghartemani ◽  
Alireza Bakhshai ◽  
Praveen Jain
Keyword(s):  
Dynamic Response ◽  
Power Control ◽  
Single Phase ◽  
Simple Structure ◽  
Control Method ◽  
Fast Dynamic

scholarly journals Study of the operation of the output filter of a single-phase series active power filter

2021 ◽  
Vol 12 (1) ◽  
pp. 304
Author(s):  
Mihail Antchev ◽  
Vanjo Gourgoulitsov ◽  
Hristo Antchev
Keyword(s):  
Single Phase ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Switching Frequency ◽  
Power Filter ◽  
Simulation And Experiment ◽  
Output Capacitor ◽  
Output Filter ◽  
Filter Capacitor

In the article is presented a single-phase series active power filter (SFSAPF) designed to compensate the total harmonic distortion (THD) factor of the supply network voltage. Particular attention is paid to the work of the output capacitor of the passive filter, and dependencies for the design of the filter at hysteresis voltage control are presented. The value of the higher harmonics of the current through the filter capacitor is determined. A mathematical relationship between the voltage ripple of the capacitor, its value and the switching frequency is derived. As a result of the advanced research a methodology for designing the output filter of a single-phase serial active power filter has been proposed. The results from computer simulation and experiment are also given.

Study of Vehicle Power Supply with AC and DC Mixed Output

2014 ◽  
Vol 960-961 ◽  
pp. 1225-1229
Author(s):  
Xing Wu Yang ◽  
Hong Chao Ji ◽  
Wei Gan
Keyword(s):  
Control Strategy ◽  
Power Supply ◽  
High Frequency ◽  
Single Phase ◽  
Control Mode ◽  
Output Stage ◽  
Two Stage ◽  
Pwm Inverter ◽  
Dc Voltage ◽  
Input Stage

The paper proposes a AC and DC mixed output VPS(vehicle power supply). It is composed of a two-stage circuit with the input stage and the output stage. The input stage contains a single-phase PWM inverter, a HFT (high-frequency transformer) and an uncontrolled rectifier. The single-phase PWM inverter adopts the open-loop control strategy to convert the low DC voltage into a high-frequency one with square wave. The HFT enhances the voltage and insulates the low-voltage side from the high-voltage side. The uncontrolled rectifier transforms the square voltage into DC voltage. In the output stage, one output uses single-phase PWM inverter and the other uses a DC chopper, both of which adopt the double-loop PWM control mode. The mode consists of an outer voltage loop and an inner current loop to produce desirable voltage and power. With the two-stage control strategy, ideal output currents and the output voltages are obtained, and the input power factor is controllable. The VPS model is established on MATLAB/SIMULINK, and this system is also implemented in laboratory based on DSP TMS320F28335. The results of simulation and experiment verify the proposed VPS system.

Design of Ground Power Information System for EMU

2013 ◽  
Vol 389 ◽  
pp. 913-917
Author(s):  
Min Peng
Keyword(s):  
Information System ◽  
Information Management ◽  
Power Supply ◽  
Single Phase ◽  
The Self ◽  
Information Network ◽  
Centralized Control ◽  
High Voltage Power Supply ◽  
Control Cabinet ◽  
And Control

In order to guarantee the operation safety, maintenance and servicing to the EMU often need to stop high voltage power supply, and switch to the ground power supply. This paper proposes a ground power information system of EMU, in this system, industrial field bus is composed of the single-phase power box, socket box and gateway, it is connected to the centralized control cabinet and the self-diagnostic terminal through the hub that constitute the information network, to realize the free transfer and exchange of data, and the centralized information management and control of the whole system, has a good promotion prospects.

Design of a High Power Programmable Intelligent Switch

2013 ◽  
Vol 389 ◽  
pp. 421-424
Author(s):  
Bai Fen Liu ◽  
Ying Gao
Keyword(s):  
Phase Shift ◽  
Power Supply ◽  
Single Phase ◽  
Low Frequency ◽  
Test System ◽  
High Quality ◽  
Dc Voltage ◽  
Ac Power ◽  
Wide Range ◽  
Testing Field

Based on the need to develop and test the products, a single phase DSP­based programmable AC power supply is designed. The power supply is capable of providing a stable AC voltage with adjustable amplitude and frequency over a wide range. Moreover, it can generate various high quality and low frequency arbitrary waveforms. Because of the advantages above, it will have great value in practice and a promising future in testing field. The main circuit of the power supply is to use rectifier and filter to make 220V AC voltage become steady DC voltage firstly. Then the inverter and the LC LPF are employed to produce the AC voltage which is required in the test system. The key part of the inverter is phase shift full bridge.

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