Common mode circulating current control of interleaved three-phase two-level voltage-source converters with discontinuous space-vector modulation

2009 ◽  
Author(s):  
Di Zhang ◽  
F. Wang ◽  
R. Burgos ◽  
D. Boroyevich
Keyword(s):  
Current Control ◽  
Voltage Source ◽  
Space Vector Modulation ◽  
Voltage Source Converters ◽  
Space Vector ◽  
Common Mode ◽  
Circulating Current ◽  
Three Phase ◽  
Vector Modulation

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.

scholarly journals Space-vector modulation for three-phase indirect matrix converters to reduce common-mode voltage

2021 ◽  
Vol 4 (2) ◽  
pp. first
Author(s):  
Hoan Quoc Tran ◽  
Tien Manh Vu ◽  
Tuyen Dinh Nguyen
Keyword(s):  
Matrix Converter ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Common Mode ◽  
Common Mode Voltage ◽  
Output Performance ◽  
Three Phase ◽  
The Common ◽  
Vector Modulation ◽  
Zero Voltage

This paper presents a space vector modulation strategy for a three-phase indirect matrix converter to reduce the common-mode voltage and maintain the output performance. To reduce the peak value of the common-mode voltage to 57.7% of the input phase voltage, three active voltage vectors are used to generate the desired output voltage with arbitrary amplitude and frequency, instead of using both active and zero voltage vectors as in the traditional space vector modulation strategy. Although the common-mode voltage is reduced, the output waveform quality of the three-phase indirect matrix converter deteriorates due to the absence of the zero voltage vectors. To overcome this problem, the proposed space vector modulation strategy is redesigned to control the rectifier stage of the indirect matrix converter by utilizing three active current vectors instead of two as usual. Consequently, the constant average dc-link voltage is achieved, which can improve the output performance in terms of the output voltage and current harmonic distortion. The simulation is implemented by PSIM software and experimental results are provided to verify the effectiveness of the proposed space vector modulation strategy.

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