Torque notch minimization for five phase quasi square wave back EMF PM synchronous motors with voltage source drives

2002 ◽  
Author(s):  
P.J. McCleer ◽  
J.S. Lawler ◽  
B. Banerjee
Keyword(s):  
Voltage Source ◽  
Synchronous Motors ◽  
Square Wave

scholarly journals Start-up of large-power synchronous motor with the 6 kV voltage source inverter and microprocessor-controlled unit for excitation supply

2018 ◽  
Vol 69 (2) ◽  
pp. 156-162
Author(s):  
Marian Hyla
Keyword(s):  
Drive System ◽  
Voltage Source ◽  
Practical Implementation ◽  
Voltage Source Inverter ◽  
Large Power ◽  
Synchronous Motors ◽  
Medium Voltage ◽  
Start Up ◽  
Measurement Results ◽  
Synchronous Drive

Abstract The paper presents idea and practical implementation of a medium voltage synchronous drive with a voltage source inverter in the stator circuit and a microprocessor controlled unit for excitation supply. Construction of both devices was presented, and methods of their cooperation were described. Selected start-up methods of large power synchronous motors were presented. Exemplary realization was discussed. Measurement results of the direct full-voltage start-up and frequency start-up of a real 1.25 MW 6 kV fan drive system were compared and discussed.

A Single-Stage Square Wave Buck-Boost Inverter

2015 ◽  
Vol 793 ◽  
pp. 280-285
Author(s):  
J.A. Soo ◽  
N.A. Rahman ◽  
J.H. Leong
Keyword(s):  
Duty Cycle ◽  
Output Voltage ◽  
Boost Converter ◽  
Single Stage ◽  
Experimental Results ◽  
Voltage Source ◽  
Voltage Waveform ◽  
Boost Converters ◽  
Dc Voltage ◽  
Square Wave

This paper proposed a novel single-stage square wave buck-boost inverter (SWBBI). The proposed inverter is designed by using dual buck-boost converters. The input DC voltage of the proposed inverter can be either stepped-down or stepped-up in square output voltage waveform depending on the duty-cycle applied for each buck-boost converter. This characteristic is not found in conventional voltage source inverter where the output voltage is always lower than the input DC voltage. The proposed inverter is analyzed by a series of simulations using MATLAB/Simulink as well as experiments by using different values of duty-cycle. A conclusion about the feasibility of the proposed inverter is given by comparing the simulation and experimental results.

Erosion of spark gap of square-wave high-voltage source for ozone generation

1993 ◽  
Vol 29 (4) ◽  
pp. 793-797
Author(s):  
Y. Kamase ◽  
M. Shimizu ◽  
T. Nagahama ◽  
A. Mizuno
Keyword(s):  
High Voltage ◽  
Voltage Source ◽  
Square Wave ◽  
Ozone Generation ◽  
Spark Gap ◽  
High Voltage Source

Control Efficiency Analysis of Linear Oscillating Mechatronic Device

2009 ◽  
Vol 147-149 ◽  
pp. 197-202
Author(s):  
Audrius Senulis ◽  
Eleonora Guseinovienė ◽  
Viktoras Cirtautas ◽  
Valdas Jankūnas ◽  
Lionė Urmonienė
Keyword(s):  
Efficiency Analysis ◽  
Open Loop ◽  
Voltage Source ◽  
Square Wave ◽  
Control Efficiency ◽  
Control Power ◽  
Thyristor Control ◽  
Piston Stroke ◽  
Pulsating Current ◽  
Selection Of

This paper deals with the control efficiency analysis of the linear oscillating mechatronic device (linear oscillating synchronous motor–compressor). These mechatronic devices can be controlled by using thyristor control [1, 4], square-wave voltage [2, 3], ect. There is analyzed the case, when square-wave voltage pulses’ frequency is changed and so the piston stroke duration time is reduced. The control of piston stroke changes the energetic parameters of the mechatronic device. This type of controlling has one disadvantage – it needs a DC voltage source. The pulsating voltage control is based on thyristor control system and does not have the previously mentioned disadvantage, because uses the AC voltage source, but both control ways have influence to the energetic parameters due to higher harmonics. The analysis of the chosen mechatronic device (open-loop tests) is based on comparing the modeling and experimental results with respect to power losses, simplicity of the control, power factor and disturbances to the supply system. These results are important for the optimal design of the drive with oscillating synchronous pulsating current motors and the selection of control type for the different type of load.

Modeling, Mathematical and Numerical Studies of a New Biventricular Model for Artificial Heart Powered by an Electromagnet Subjected to Sinusoidal and Square Voltages

2018 ◽  
pp. 172-198
Author(s):  
Paul Woafo ◽  
Abobda Theodore Lejuste
Keyword(s):  
Artificial Heart ◽  
Voltage Source ◽  
Low Frequencies ◽  
External Voltage ◽  
Square Wave ◽  
Stiffness Coefficients ◽  
Numerical Studies ◽  
Point Attractor ◽  
The One ◽  
The Masses

This paper describes and investigates the dynamics of a new model of biventricular model for artificial heart which consists of two ferromagnetic masses fixed on springs and subjected to a common electromagnet powered by sinusoidal and square wave voltage sources. The effects of the following control parameters are considered: the external voltage source frequency and amplitude, the ratio between the stiffness coefficients, and the one between the masses. As results in both cases of external excitations, subharmonic oscillations, hysteresis, coexistence of limit cycle and point attractor, permanent bounding are found. The optimal voltage and the ratio between the stiffness coefficients are obtained. Bursting oscillations usable for pulsatile pumping are observed for low frequencies under square wave voltage.

scholarly journals PID Controller Based Multiple (Master/Slaves) Permanent Magnet Synchronous Motors Speed Control

2011 ◽  
Vol 11 (2) ◽  
pp. 183-192
Author(s):  
Suroor Dawood ◽  
Samar Majeed ◽  
Habeeb Nekad
Keyword(s):  
Permanent Magnet ◽  
Pid Controller ◽  
High Efficiency ◽  
Control Method ◽  
Speed Control ◽  
Industrial Applications ◽  
Voltage Source ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Approach Method

This paper suggests the use of the traditional proportional-integral-derivative (PID) controller to control the speed of multi Permanent Magnet Synchronous Motors (PMSMs). The PMSMs are commonly used in industrial applications due to their high steady state torque, high power, high efficiency, low inertia and simple control of their drives compared to the other motors drives. In the present study a mathematical model of three phase four poles PMSM is given and simulated. The closed loop speed control for this type of motors with voltage source inverter and abc to dq blocks are designed. The multi (Master/Slaves approach) method is proposed for PMSMs. Mathwork's Matlab/Simulink software package is selected to implement this model. The simulation results have illustrated that this control method can control the multi PMSMs successfully and give better performance.

scholarly journals Generalized Vectorial Formalism – based multiphase series-connected motors control

2015 ◽  
Vol 18 (3) ◽  
pp. 18-28
Author(s):  
Eric Semail ◽  
Ngac Ky Nguyen ◽  
Xavier Kestelyn ◽  
Tiago Dos Santos Moraes
Keyword(s):  
Permanent Magnet ◽  
Control Strategy ◽  
Control Method ◽  
Experimental Results ◽  
Voltage Source ◽  
Strategy Development ◽  
Voltage Source Inverter ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Multiphase Machine

Multiphase drives are more and more used in specific applications leading to a necessity of control strategy development. This paper presents the Generalized Vectorial Formalism (GVF) theory to control multiphase series-connected permanent magnet synchronous motors (PMSM) fed by one voltage source inverter (VSI). Based on a decomposition of multiphase machine, a proposed control strategy has been achieved. Some experimental results are given to illustrate this control method.

Sign in / Sign up

Export Citation Format

Share Document