scholarly journals Proteus ISIS simulation for power factor calculation using zero crossing detector

2021 ◽  
Vol 12 (1) ◽  
pp. 28-37
Author(s):  
Jumrianto Jumrianto ◽  
Royan Royan
Keyword(s):  
Power Factor ◽  
Electrical Network ◽  
Resistive Load ◽  
Phase Detection ◽  
Motor Speed ◽  
Inductive Load ◽  
Zero Crossing ◽  
Electrical Systems ◽  
Detection Circuit ◽  
Launch Angle

One of the important parameters for electrical systems is the power factor (cos phi), which is the ratio of the real power (watt) to the apparent power (volt ampere). The best cos phi value is between 0.85 to 1. A resistive load causes the voltage and current in equal phase angle, while the inductive load causes the current to lag behind the voltage. On the other hand, the capacitive load causes the current to precede the voltage (leading). A simulation to determine the power factor of an electrical network can be done with Proteus ISIS software by creating a phase detection circuit. Automatic control can be done by a microcontroller. This simulation circuit can be used as power factor correction, a trigger angle on SCR trigger for DC motor speed control, for rocket launch angle adjuster, to measure the angle of inclination, and other uses relating to angle adjustments.

A Design of an Automatic Single Phase Power Factor Controller by Using Arduino Uno Rev-3

2015 ◽  
Vol 785 ◽  
pp. 419-423 ◽  
Author(s):  
Nurul Huda Ishak ◽  
Muhammad Naim Zainodin ◽  
Nur Ashida Salim ◽  
Faizal Muhamad Twon Tawi ◽  
Aini Hafiza Mohd Saod
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Hardware Implementation ◽  
Time Difference ◽  
Signal Pulse ◽  
Unity Power Factor ◽  
Current Transformers ◽  
Inductive Load ◽  
Zero Crossing ◽  
Arduino Uno

This paper presents a computationally accurate technique to design an automatic single phase power factor controller by using microcontroller. The hardware implementation was developed by using Arduino Uno Rev-3 main board which uses the ATmega328 as the microcontroller. The power factor value from the load was measured by using voltage and current transformers, zero crossing detectors, and ATmega328 microcontroller. Zero crossing detectors produced current and voltage signals which will be measured and calculated for the time difference between both signals by ATmega328 microcontroller using appropriate algorithms in order to obtain value of power factor. The ATmega328 is programmed to automatically switch on and off capacitor function in order to control the signal pulse send to relay to connect and disconnect capacitor parallel with the load when energized and de energized if the calculated power factor value is either below 0.9 or above 0.9, respectively. Simulation of the power factor controller model was performed by using Proteus software. Arduino IDE software was used as the compiler for the Arduino Uno. The main objective is to study and develop the technology of automatic single phase power factor controller using Arduino Uno Rev-3 by controlling the power factor of the inductive load near to unity power factor. The results of the power factor value were displayed on the LCD and the power factor is corrected if it falls below 0.9 in order to prevent penalty by the power supplier. The effectiveness of the proposed technique could assist the monitoring unit in order to maintain the power factor at the value set by the utility.

Power factor of thyristor-controlled single-phase resistive load

1973 ◽  
Vol 120 (12) ◽  
pp. 1538 ◽  
Author(s):  
W. Shepherd ◽  
P.J. Gallagher
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Resistive Load

scholarly journals Rancang Bangun Pengaman Panel Distribusi Tenaga Listrik Di Lippo Plaza Sidoarjo Dari Kebakaran Berbasis Arduino Nano

2017 ◽  
Vol 1 (2) ◽  
pp. 31
Author(s):  
Achmad Solih ◽  
Jamaaluddin Jamaaluddin
Keyword(s):  
Control System ◽  
Power Factor ◽  
Power Distribution ◽  
Low Voltage ◽  
Capacitor Bank ◽  
Warning Sign ◽  
Inductive Load ◽  
Three Phase ◽  
Working Principle ◽  
Power Distribution Control

Panel system power distribution at Lippo Plaza Mall Sidoarjo consists of several parts, namely from Cubicle 20 KV, 20 KV step-down transformer for 380 V, then the supply to LVMDP (Low Voltage Main Distribution Panel) The new panel to the user. Before delivery to users to note that the power factor is corrected using a capacitor bank. Less good a power factor is turned into inductive load on the capacitor bank so that temperatures high  because of high load resulting capacitor bank erupt. To overcome in this study proposes a safety panel automation power distribution control system using a microcontroller. Control system microcontrollers for safety panel power distribution consists of: Microcontroller (Arduino Nano), Light sensor (LDR), temperature sensor (LM35DZ), LCD 16x2 I2C, Actuators (fan, buzzer, relay switch breaker network three phase), switch ( relay 5 VDC), ADC as Input data. The working principle of this microcontroller LM35DZ if the sensor detects a high temperature fan will flash, if the LDR sensor detects sparks then the buzzer will sound as a warning sign of the dangers and disconnected the electricity network. From the design of a safety tool for power distribution panels due to high temperatures or sparks as well as the expected rate of fire outbreaks can be prevented.

Design and Implementation of Actuator Controller for Greenhouse Control System

2014 ◽  
Vol 532 ◽  
pp. 62-69
Author(s):  
Yi Chuan Gao ◽  
Guo Chang Liu
Keyword(s):  
Control System ◽  
Short Circuit ◽  
Alternating Current ◽  
Electric Arc ◽  
Zero Crossing ◽  
Three Phase ◽  
Detection Circuit ◽  
Task Program ◽  
Current Zero ◽  
Greenhouse Control

A novel actuator controller for greenhouse control system is proposed in this paper. This controller can solve the problems existing in traditional greenhouse control system such as generating electric arc, short circuit risk, lack of communication and smart ability. We adopt five separate magnetic latching relays to control the three-phase motor. In order to prevent generating electric arc in the process of turning off relay, the alternating current zero-crossing detection circuit is designed. In software side, the relay-off task program is running in the real-time operating system, which can ensure turn-off operation at the point of alternating current zero-crossing. In addition, the controller is capable of detecting motors operation parameter and having multiple communication interfaces. Finally, we implement our controller in practice and experimental results meet the design requirements.

scholarly journals A Comparative Study between Traditional Backup Generator Systems and Renewable Energy Based Microgrids for Power Resilience Enhancement of a Local Clinic

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1485 ◽  
Author(s):  
Jamal Faraji ◽  
Masoud Babaei ◽  
Navid Bayati ◽  
Maryam A.Hejazi
Keyword(s):  
Energy Systems ◽  
Energy System ◽  
Sensitivity Analyses ◽  
Extreme Weather Events ◽  
Electrical Network ◽  
Emergency Situations ◽  
Electrical Systems ◽  
Cost Of Energy ◽  
Weather Events ◽  
Battery Energy

Extreme weather events lead to electrical network failures, damages, and long-lasting blackouts. Therefore, enhancement of the resiliency of electrical systems during emergency situations is essential. By using the concept of standby redundancy, this paper proposes two different energy systems for increasing load resiliency during a random blackout. The main contribution of this paper is the techno-economic and environmental comparison of two different resilient energy systems. The first energy system utilizes a typical traditional generator (TG) as a standby component for providing electricity during the blackouts and the second energy system is a grid-connected microgrid consisting of photovoltaic (PV) and battery energy storage (BES) as a standby component. Sensitivity analyses are conducted to investigate the survivability of both energy systems during the blackouts. The objective function minimizes total net present cost (NPC) and cost of energy (COE) by considering the defined constraints of the system for increasing the resiliency. Simulations are performed by HOMER, and results show that for having almost the same resilience enhancement in both systems, the second system, which is a grid-connected microgrid, indicates lower NPC and COE compared to the first system. More comparison details are shown in this paper to highlight the effectiveness and weakness of each resilient energy system.

Novel Strategy for BLDC Motor Rotor Position Detection

2015 ◽  
Vol 772 ◽  
pp. 365-372
Author(s):  
Ling Zhi Cao ◽  
Sheng Hao Yang
Keyword(s):  
Motor Speed ◽  
Zero Crossing ◽  
Low Speed ◽  
Rotor Position ◽  
Voltage Difference ◽  
Position Detection ◽  
Position Signal ◽  
Speed Range ◽  
Terminal Voltage ◽  
Wide Speed Range

The detection of rotor position plays an important role in the motor speed-adjustment system. By analyzing the back-EMF method and its improved methods, we know the amplitude of back-EMF is too small to be detected when the motor run at low speed. A new detection method of rotor position has been proposed in this paper. It detects the zero crossing point of line terminal voltage difference to acquire the rotor position signal after a 90 degrees mechanical angle delay. The amplitude of line terminal voltage difference is large in wide speed range, so the rotor position signal can be accurately acquired in most situations. Simulation results proved that the new method can obtain the rotor position signal exactly in both high and low speed. It meets the wide speed range of motor.

scholarly journals A New Fractional Particle Swarm Optimization with Entropy Diversity Based Velocity for Reactive Power Planning

Entropy ◽  
2020 ◽  
Vol 22 (10) ◽  
pp. 1112 ◽  
Author(s):  
Muhammad Waleed Khan ◽  
Yasir Muhammad ◽  
Muhammad Asif Zahoor Raja ◽  
Farman Ullah ◽  
Naveed Ishtiaq Chaudhary ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Reactive Power ◽  
Cost Minimization ◽  
Operating Cost ◽  
Particle Swarm ◽  
Cumulative Distribution ◽  
Electrical Network ◽  
Swarm Optimization ◽  
Electrical Systems ◽  
Line Loss

Optimal Reactive Power Dispatch (ORPD) is the vital concern of network operators in the planning and management of electrical systems to reduce the real and reactive losses of the transmission and distribution system in order to augment the overall efficiency of the electrical network. The principle objective of the ORPD problem is to explore the best setting of decision variables such as rating of the shunt capacitors, output voltage of the generators and tap setting of the transformers in order to diminish the line loss, and improve the voltage profile index (VPI) and operating cost minimization of standard electrical systems while keeping the variables within the allowable limits. This research study demonstrates a compelling transformative approach for resolving ORPD problems faced by the operators through exploiting the strength of the meta-heuristic optimization model based on a new fractional swarming strategy, namely fractional order (FO)–particle swarm optimization (PSO), with consideration of the entropy metric in the velocity update mechanism. To perceive ORPD for standard 30 and 57-bus networks, the complex nonlinear objective functions, including minimization of the system, VPI improvement and operating cost minimization, are constructed with emphasis on efficacy enhancement of the overall electrical system. Assessment of the results show that the proposed FO-PSO with entropy metric performs better than the other state of the art algorithms by means of improvement in VPI, operating cost and line loss minimization. The statistical outcomes in terms of quantile–quantile illustrations, probability plots, cumulative distribution function, box plots, histograms and minimum fitness evaluation in a set of autonomous trials validate the capability of the proposed optimization scheme and exhibit sufficiency and also vigor in resolving ORPD problems.

Current Zero Crossing Detection Circuit for Synchronous Rectification Model Buck Converter

2014 ◽  
Vol 571-572 ◽  
pp. 906-909
Author(s):  
Zhu Lei Shao
Keyword(s):  
Buck Converter ◽  
Drain Voltage ◽  
Zero Crossing ◽  
Power Switch ◽  
Detection Circuit ◽  
Synchronous Rectification ◽  
Different Temperatures ◽  
Current Zero ◽  
Voltage Conversion ◽  
A Current

In order to reduce the power consumption of the synchronous rectification model buck converter, a current zero crossing detection circuit is designed in this paper. The detection circuit determines the freewheeling current of the synchronous rectification power switch is zero or not by detecting the drain voltage of synchronous rectification power switch. Due to use transistors instead of resistors in the voltage conversion, the accuracy of the detection circuit is less affected by temperature and process corner. From the experimental results, the detection circuit can make accurate current zero crossing detection in different temperatures and process corners, and the detection circuit has strong robustness.

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