A PWM rectifier control system with DC current control based on the space vector modulation and AC stabilisation

1998 ◽  
Author(s):  
G.D. Marques
Keyword(s):  
Control System ◽  
Current Control ◽  
Space Vector Modulation ◽  
Pwm Rectifier ◽  
Space Vector ◽  
Vector Modulation ◽  
Dc Current

scholarly journals Space Vector Modulation Strategies for Self-Sensing Three-Phase Radial Active Magnetic Bearings

Actuators ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 41
Author(s):  
Dominik Wimmer ◽  
Markus Hutterer ◽  
Matthias Hofer ◽  
Manfred Schrödl
Keyword(s):  
Magnetic Bearing ◽  
Current Control ◽  
Modulation Method ◽  
Space Vector Modulation ◽  
Position Measurement ◽  
Space Vector ◽  
Position Information ◽  
Rotor Position ◽  
Three Phase ◽  
Vector Modulation

The focus of this study lies on the investigation of the space vector modulation of a self-sensing three-phase radial active magnetic bearing. The determination of the rotor position information is performed by a current slope-based inductance measurement of the actuator coils. Therefore, a special pulse width modulation sequence is applied to the actuator coils by a conventional three-phase inverter. The choice of the modulation type is not unique and provides degrees of freedom for different modulation patterns, which are described in this work. For a self-sensing operation of the bearing, certain constraints of the space vector modulation must be considered. The approach of a variable space vector modulation is investigated to ensure sufficient dynamic in the current control as well as the suitability for a self-sensing operation with an accurate rotor position acquisition. Therefore, different space vector modulation strategies are considered in theory as well as proven in experiments on a radial magnetic bearing prototype. Finally, the performance of the self-sensing space vector modulation method is verified by an external position measurement system.

Hysteresis Current Control Technique Based on Space Vector Modulation for Active Power Filter

2013 ◽  
Vol 385-386 ◽  
pp. 1224-1228
Author(s):  
Yun Liang Wang ◽  
Qi Liang Guo
Keyword(s):  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Control Technique ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Hysteresis Current Control ◽  
Power Filter ◽  
Vector Modulation

In this paper, the hysteresis current control (HCC) technique based on space vector modulation (SVM) for active power filter (APF) is proposed. The switching control algorithms of the HCC based SVM manage to generate compensated current according to the reference current. Harmonics extraction is calculated for the power compensation based on the instantaneous active and reactive power theorem in time domain. A closed loop control system is carried out and the APF manages to generate better compensated harmonics currents to the power grid.

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