Single-Phase Sine Inverter Power Supply Based on PIC18F2431

2012 ◽  
Vol 487 ◽  
pp. 258-262
Author(s):  
Hong Li ◽  
Jun Yu
Keyword(s):  
Surface Area ◽  
Power Supply ◽  
Single Phase ◽  
Cost Effective ◽  
Sampling Theorem ◽  
Motor Speed ◽  
Control Center ◽  
Ac Motor ◽  
Inverter Power Supply

According to the principle of equivalent surface area and Nyquist sampling theorem, this paper introduces the method which takes PIC18F2431 SCM as the control center in details, and it forms Single-phase sine inverter power supply by adopting the principle of equivalent surface area directly. This method that can be widely used in controlling Single-phase AC motor speed is simple and cost-effective.

scholarly journals Design and Experimental Research of Agricultural Low Power Singlephase Frequency Conversion Control System Based on SPWM

2015 ◽  
Vol 9 (1) ◽  
pp. 490-495
Author(s):  
Chuanlai Yuan ◽  
Lingshuang Kong ◽  
Can Hu ◽  
Weilong Zhou
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Rational Design ◽  
Single Phase ◽  
Frequency Conversion ◽  
Frequency Converter ◽  
Ac Motor ◽  
Ac Power ◽  
Three Phase ◽  
Power Frequency

In the countryside of China, the main power supply mode is 220V single-phase power, which affects the widely application of three-phase agricultural appliances. What’s more, it means a block to the development of modern agriculture. However, frequency converter technique research is focused on three-phase high power frequency conversion technology at present, and there are very few achievements on the agricultural low power single-phrase frequency conversion research. In this paper, considering the difficulty of widely application of agricultural low power three-phase AC motor because it is not easy to obtain the three-phase power supply, a three-phase AC frequency conversion system under the condition of agricultural 220V single-phase AC power is designed, which can achieve the stepless regulation of the voltage amplitude and guarantee the widely use of the three-phase AC motor under the condition of agricultural 220V singlephase AC power. The experimental results show that the system can output the controlled three-phase AC power when the input is 220V single-phase AC power. And the rational design of the system hardware also provides the technical support for the application of agricultural low power frequency conversion.

scholarly journals Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1978 ◽  
Author(s):  
Sanna Uski ◽  
Erkka Rinne ◽  
Janne Sarsama
Keyword(s):  
Case Studies ◽  
Power Supply ◽  
Dairy Farm ◽  
Cost Effective ◽  
Distribution Networks ◽  
Comparison Method ◽  
Economic Benefits ◽  
Economic Feasibility ◽  
Cost Calculation ◽  
Islanded Operation

Microgrids can be used for securing the supply of power during network outages. Underground cabling of distribution networks is another effective but conventional and expensive alternative to enhance the reliability of the power supply. This paper first presents an analysis method for the determination of microgrid power supply adequacy during islanded operation and, second, presents a comparison method for the overall cost calculation of microgrids versus underground cabling. The microgrid power adequacy during a rather long network outage is required in order to indicate high level of reliability of the supply. The overall cost calculation considers the economic benefits and costs incurred, combined for both the distribution network company and the consumer. Whereas the microgrid setup determines the islanded-operation power adequacy and thus the reliability of the supply, the economic feasibility results from the normal operations and services. The methods are illustrated by two typical, and even critical, case studies in rural distribution networks: an electric-heated detached house and a dairy farm. These case studies show that even in the case of a single consumer, a microgrid option could be more economical than network renovation by underground cabling of a branch in order to increase the reliability.

scholarly journals Single-Phase Transformerless Line Interactive Uninterruptable Power Supply with Two Independent Control Algorithms

2021 ◽  
Vol 1874 (1) ◽  
pp. 012002
Author(s):  
Nur Sabrina Abdul Halim ◽  
Nor Farahaida Abdul Rahman ◽  
Rahimi Baharom ◽  
Muhammad Ammirrul Atiqi Mohd Zainuri
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Control Algorithms ◽  
Independent Control

Study of Induction Heating Power Supply Based on 74HC4046

2014 ◽  
Vol 1008-1009 ◽  
pp. 663-667 ◽  
Author(s):  
Yan Cui ◽  
Xiao Jun He ◽  
Ze Ping Lin ◽  
Qing Bin Chen ◽  
Wei Hao Yang ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Induction Heating ◽  
Power Supply ◽  
Simulation Experiment ◽  
Tracking System ◽  
Output Frequency ◽  
Phase Compensation ◽  
Frequency Tracking ◽  
Iron Load ◽  
Inverter Power Supply

According to the change of resistivity and magnetic permeability of iron load which will influence the resonance frequency in the process of induction heating, this paper presents a frequency tracking system based on the 74HC4046. It can control the output frequency of the power supply in real time, and make the power output frequency to trace the resonance frequency of load. This paper also analyses the phase compensation of the control system, and proposes a new way of phase compensation. The corresponding simulation experiment is done finally. It provides the theory basis to analyze and design an inverter power supply.

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