Predictive control of a current source converter operating with low switching frequency

2012 ◽  
Author(s):  
M. Rivera ◽  
S. Kouro ◽  
J. Rodriguez ◽  
B. Wu ◽  
J. Espinoza
Keyword(s):  
Predictive Control ◽  
Current Source ◽  
Switching Frequency ◽  
Current Source Converter ◽  
A Current

scholarly journals A Hybrid Predictive Control for a Current Source Converter in an Aircraft DC Microgrid

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4025 ◽  
Author(s):  
Yang ◽  
Tu ◽  
Wang ◽  
Lei ◽  
Wang ◽  
...  
Keyword(s):  
Predictive Control ◽  
Current Source ◽  
Weighting Factor ◽  
Sampling Time ◽  
Input Circuit ◽  
Reference Source ◽  
Dc Microgrid ◽  
Current Source Converter ◽  
Lc Filter ◽  
A Current

A current source converter (CSC) is a promising topology for interfacing aircraft generators with the onboard DC microgrid. In this paper, a hybrid predictive control is proposed for the CSC with an output LC filter in such application. Deadbeat predictive control with larger sampling time is applied to the output circuit, generating reference source currents. Finite-set model predictive control with smaller sampling time is applied to the input circuit to achieve sinusoidal source currents, which is simplified by saving the source current predictions. The proposed scheme eliminates both the proportional-integral controller and the weighting factor, which are required in the existing studies. Besides, it has lower control complexity. A SiC-MOSFET-based prototype is used to verify the validity of the proposed scheme. Experimental results under 150 V/350–800 Hz AC input and 270 V DC output demonstrate the superior control performance.

scholarly journals Space vector PWM sequence and harmonic comparison for high power current source rectifier

2021 ◽  
Author(s):  
Nagaraja H. Chikkegowda
Keyword(s):  
High Power ◽  
Current Source ◽  
Switching Frequency ◽  
Space Vector Pwm ◽  
Vector Sequence ◽  
Space Vector ◽  
Switching Losses ◽  
Vector Sequences ◽  
Vector Modulation ◽  
A Current

The space vector PWM (SVPWM) schemes for high power current source drives normally produce low order harmonics due to low switching frequency. To provide a SVPWM with the best harmonic performance, different space vector sequences suitable for a current source rectifier (CSR) are investigated in this project. Details on how to achieve the waveform symmetries with minimum switching frequency for each sequence are discussed. A thorough comparison of the harmonic performance of different space vector sequences based on current source rectifier implementations is carried out. An optimum space vector modulation (SVM) method is proposed to achieve the best line current THD and reduced switching losses. The space vector sequence investigation has been verified in simulation and experimentally using a 10kVA GCT based CSR prototype.

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