A Novel Two-phase Soft Starter Used for Three-phase Asynchronous Motors

2020 ◽  
Vol 13 (8) ◽  
pp. 1175-1182
Author(s):  
Jingwen Chen ◽  
Hongshe Dang
Keyword(s):  
Pulse Generation ◽  
Power Module ◽  
Two Phase ◽  
Power Semiconductor ◽  
Starting Current ◽  
Semiconductor Switches ◽  
Soft Starter ◽  
Three Phase ◽  
And Control ◽  
Driving Circuit

Background: Traditional thyristor-based three-phase soft starters of induction motor often suffer from high starting current and heavy harmonics. Moreover, both the trigger pulse generation and driving circuit design are usually complicated. Methods: To address these issues, we propose a novel soft starter structure using fully controlled IGBTs in this paper. Compared to approaches of traditional design, this structure only uses twophase as the input, and each phase is controlled by a power module that is composed of one IGBT and four diodes. Results: Consequently, both driving circuit and control design are greatly simplified due to the requirement of fewer controlled power semiconductor switches, which leads to the reduction of the total cost. Conclusion: Both Matlab/Simulink simulation results and experimental results on a prototype demonstrate that the proposed soft starter can achieve better performances than traditional thyristorbased soft starters for Starting Current (RMS) and harmonics.

scholarly journals Performance Analysis of 3-Level 5-Phase Multilevel Inverter Topologies

2017 ◽  
Vol 7 (4) ◽  
pp. 1696
Author(s):  
B. Jyothi ◽  
M. Venu Gopala Rao
Keyword(s):  
Pulse Width Modulation ◽  
Industrial Applications ◽  
Simulation Software ◽  
Multilevel Inverter ◽  
Power Semiconductor ◽  
Semiconductor Switches ◽  
Three Phase ◽  
Electrical Vehicles ◽  
Multi Level ◽  
Sinusoidal Pulse Width Modulation

Now a day’s many industrial applications requires high power. Some other appliances may require intermediate power either more or less depending upon their operation. With these consequences, MULTI LEVEL INVERTERS are introduced in 1975.for above intermediate voltage applications. The name MULTI LEVEL began with the three-level converter.By enormous advancement in power semiconductor switches, in electric drives increasing the phase number greater than the conventional three phase especially in locomotives, naval, aerospace, and electrical vehicles industry has many advantages than three phase. In this view, here five phase VSI has developed. This paper aims at comparing the performance of conventional two level inverter Diode clamped and Capacitor clamped topologies of 5-phase multilevel inverter (3-level) using sinusoidal pulse width modulation. SPWM is highly economical, has more efficiency, controllability. These circuits are analyzed by using simulation software package such as MATLAB.

Design of the DSP Controller for the Magnetic-Control Soft-Starter

2013 ◽  
Vol 344 ◽  
pp. 145-148
Author(s):  
Jing Chen ◽  
Bin Zhou ◽  
You Xin Yuan ◽  
Huai Bin Zhu
Keyword(s):  
High Performance ◽  
High Reliability ◽  
Magnetic Control ◽  
Price Ratio ◽  
Starting Current ◽  
Soft Start ◽  
Ac Motor ◽  
Soft Starter ◽  
Three Phase ◽  
Dsp Controller

This objective of this work is to design and implement the magnetic-control soft-start controller for the motor starting at rated current. The motor is accelerated smoothly, the starting current is reduced and motor starting performance is improved by this soft-starting technology. For eliminating the harmfulness of the starting current of the three-phase AC motor, the DSP controller is used as the controller in this magnetic-control soft-starter. The design of the DSP controller for the magnetic-control soft-starter is first proposed. The hardware and software designs are realized in this paper, and it is subsequently verified experimentally. Experimental results show that the DSP controller for the magnetic-control soft-starter has extensive applicability, high reliability and high performance price ratio.

Vector Control of Three-Phase Induction Motor with Two Stator Phases Open-Circuit

2015 ◽  
Vol 6 (2) ◽  
pp. 282
Author(s):  
Seyed Hesam Asgari ◽  
Mohammad Jannati ◽  
Tole Sutikno ◽  
Nik Rumzi Nik Idris
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
Open Circuit ◽  
Two Phase ◽  
Modeling And Control ◽  
Control Techniques ◽  
Three Phase ◽  
Variable Frequency Drives ◽  
Novel Method ◽  
And Control

<p>Variable frequency drives are used to provide reliable dynamic systems and significant reduction in usage of energy and costs of the induction motors. Modeling and control of faulty or an unbalanced three-phase induction motor is obviously different from healthy three-phase induction motor. Using conventional vector control techniques such as Field-Oriented Control (FOC) for faulty three-phase induction motor, results in a significant torque and speed oscillation. This research presented a novel method for vector control of three-phase induction motor under fault condition (two-phase open circuit fault). The proposed method for vector control of faulty machine is based on rotor FOC method. A comparison between conventional and modified controller shows that the modified controller has been significantly reduced the torque and speed oscillations.</p>

Research on Intelligent Soft Starting Method for Three-Phase Asynchronous Motor Based on MATLAB

2011 ◽  
Vol 299-300 ◽  
pp. 828-831
Author(s):  
Yan Feng Zhu
Keyword(s):  
Pid Control ◽  
Control Method ◽  
Design Method ◽  
Asynchronous Motor ◽  
Control Effect ◽  
Starting Current ◽  
Soft Starter ◽  
Three Phase ◽  
Adaptive Pid Control ◽  
Fuzzy Adaptive

Considering the very large direct starting current of three-phase asynchronous motor, this paper presents a design method of asynchronous motor soft starter based on a intelligent control- fuzzy adaptive PID control. The simulation model of the soft starting control system is established with the power system blockset in MATLAB/SIMULINK software. The simulation results show that the fuzzy adaptive PID control method can effectively limit the motor starting current and it is better than the control effect of traditional PID control. Therefore, the fuzzy adaptive PID control scheme presented in this paper is correct and feasible.

scholarly journals E-Type Asymmetric Multilevel Inverter Based Transformer less Traction Drive

2019 ◽  
Vol 8 (10) ◽  
pp. 2579-2589
Keyword(s):  
Output Voltage ◽  
Induction Motors ◽  
Multilevel Inverter ◽  
Switching Frequency ◽  
Switching Loss ◽  
Traction Drive ◽  
Power Semiconductor ◽  
Electric Drives ◽  
Semiconductor Switches ◽  
Three Phase

To overcome the limitations of conventional multilevel inverter such as of more no. of power semiconductor switches, large no. of capacitors, more switching loss etc. , a new topology of Envelope type (E-type) MLI is used. This E-type Module has some preferable features like reduced no. of components and low switching frequency. This E-type asymmetric converter uses four unequal DC sources and ten switches to generate 13 level of output voltage. SHE modulation technique is used to achieve high quality output voltage with low harmonic content. This E-type converter configuration will be used in transformer less traction drive. Nowadays Induction motors are used as electric drives for most of the electric railways. A transformer less connection is used for feeding Induction motor. This converter-inverter configuration will convert single phase AC voltage to DC and again this DC voltage will be converted into three phase AC. The output of the E-type Multi level inverter will be used to drive the Induction motors.

Three-Phase Induction Motor Modeling and Control Based on the EL Equation

2012 ◽  
Vol 622-623 ◽  
pp. 1917-1921
Author(s):  
Hao Xiang ◽  
Jiu He Wang ◽  
Yu Ling Ma ◽  
Dong Ying Yang
Keyword(s):  
Induction Motor ◽  
System Simulation ◽  
Two Phase ◽  
Modeling And Control ◽  
Three Phase ◽  
Simulation Results ◽  
Stator Flux ◽  
Set Up ◽  
And Control ◽  
The Mathematical Model

The Euler-Lagrange (EL) model of the three-phase induction motor is set up based on the mathematical model of the three-phase induction motor in the two-phase static coordinate. The passivity and dissipativity of the three-phase induction motor are studied by EL model. Based on the passivity of induction motor, the passivity-based controller of system is designed with the method of damping injection under the conditions of the stator flux oriented.The system simulation model of the three-phase induction motor is established under MATLAB/Simulink environment. The Simulation results show that the passivity-based controller designed with the method of damping injection under the conditions of the stator flux orientedis feasible.

The generated power of multipole induction generator with secondary winding on the stator

2009 ◽  
Vol 25 (25) ◽  
pp. 31-34
Author(s):  
Guntis Diļevs ◽  
Edgars Jakobsons
Keyword(s):  
Rotation Speed ◽  
Induction Generator ◽  
Two Phase ◽  
Three Phase ◽  
Secondary Winding

The generated power of multipole induction generator with secondary winding on the statorThis paper posses the construction of induction generator, which has the ability to operate at a low rotation speed. This generator can be applied for directly driven turbine without using the gearbox. The generator is multi pole with all of the windings placed on the stator. Rotor is tooth-like and has no windings on it. Primary winding is three phase, secondary winding is two phase.

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