scholarly journals A Vector Control System Using a Neutral-Point-Clamped Voltage Source PWM Inverter.

1991 ◽  
Vol 111 (11) ◽  
pp. 930-936 ◽  
Author(s):  
Satoshi Ogasawara ◽  
Tadashi Sawada ◽  
Keiichi Abe ◽  
Hirofumi Akagi
Keyword(s):  
Control System ◽  
Vector Control ◽  
Neutral Point ◽  
Voltage Source ◽  
Pwm Inverter ◽  
Vector Control System

A vector control system using a neutral-point-clamped voltage-source pwm inverter

1993 ◽  
Vol 113 (5) ◽  
pp. 93-101
Author(s):  
Satoshi Ogasawara ◽  
Tadashi Sawada ◽  
Keiichi Abe ◽  
Hirofumi Akagi
Keyword(s):  
Control System ◽  
Vector Control ◽  
Neutral Point ◽  
Voltage Source ◽  
Pwm Inverter ◽  
Vector Control System

Novel Vector Control System Using Deadbeat-Controlled PWM Inverter With Output LC Filter

2004 ◽  
Vol 40 (1) ◽  
pp. 162-169 ◽  
Author(s):  
M. Kojima ◽  
K. Hirabayashi ◽  
Y. Kawabata ◽  
E.C. Ejiogu ◽  
T. Kawabata
Keyword(s):  
Control System ◽  
Vector Control ◽  
Pwm Inverter ◽  
Lc Filter ◽  
Vector Control System

scholarly journals Improving of the vector control system structure of the active controlled rectifier

2021 ◽  
pp. 43-48
Author(s):  
Denis Krylov ◽  
Olga Kholod
Keyword(s):  
Control System ◽  
Vector Control ◽  
Power Supply ◽  
Frequency Converter ◽  
System Structure ◽  
Voltage Source ◽  
Active Rectifier ◽  
Semiconductor Converters ◽  
Vector Control System

The vast majority of electricity is used by industrial facilities in a converted form. At the same time, the use of semiconductor converters to obtain the required load parameters is intensively increasing. Current trends in the development and improvement of semiconductor converters are aimed at energy saving by improving their quality of work and reducing the impact on the power supply, load, and related consumers. Frequency converter with DC insert has become widespread and widely used. Its scheme is mainly based on an uncontrolled diode rectifier and an autonomous voltage inverter. Uncontrolled rectifiers are simple and reliable, but have two main disadvantages: the impossibility to recover electricity to the supply network and distortions of the source current shape. We can get rid of these disadvantages by using an active rectifier made according to the voltage source scheme instead of an uncontrolled rectifier. The operation of an active rectifier significantly depends on the type of its control system structure. This article aims to to improve the structure of the switches control system of the active rectifier scheme – voltage source built using a vector calculation algorithm; creation of a MatLab model of a three-phase active-controlled rectifier operating with a fixed modulation frequency and analysis of the influence of the input inductance value on the quality of its operation. The simulation results confirm that the improved structure of the vector control system proposed by the authors ensures high-quality operation of the active rectifier and electromagnetic compatibility of the frequency converter with the power supply network at the level allowed by the standards; simplification of the representation mathematical apparatus of the generalized vectors of currents and voltages at the construction of a vector control system of the active rectifier – voltage source practically did not influence qualitative indicators of the converter work in any way; a network filter must be used to eliminate the final distortions introduced into the source voltage by an additional nonlinear load.

H? Observer Based Sensor-less Control Strategy for Interior Permanent Magnet Synchronous Motor

2011 ◽  
Vol 12 (3) ◽  
Author(s):  
Naomitsu Urasaki ◽  
Abdul Motin Howlader ◽  
Atsushi Yona ◽  
Tomonobu Senjyu ◽  
Ahmed Y. Saber
Keyword(s):  
Control System ◽  
Vector Control ◽  
Permanent Magnet ◽  
High Speed ◽  
Permanent Magnet Synchronous Motor ◽  
Estimation Accuracy ◽  
Voltage Source ◽  
Permanent Magnet Synchronous Motors ◽  
Flux Observer ◽  
Vector Control System

Nowadays a sensor-less vector control system for a motor drive becomes promising to avoid a position sensor. A back electro-motive-force or flux observer is used for sensor-less drive of permanent magnet synchronous motors from middle to high speed range. Thus, the estimation accuracy of the observer influences sensor-less drive performance. This paper proposes a sensor-less vector control system using the H? flux observer in which the observer gain is designed based on the H? control theory. This observer is insensitive to high frequency disturbances such as voltage disturbance due to non-linearity of PWM voltage source inverter, measurement noise of current sensors, and modeling errors. So, the total performance of a sensor-less control system is enhanced. The detailed configuration of the H? flux observer is described in this paper. Simulation results are compared with the conventional full-order flux observer-based sensor-less system.

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