Analysis and comparison of resonant-based current controllers implemented in stationary reference frame: A complex pole-zero placement perspective

2015 ◽  
Author(s):  
Sizhan Zhou ◽  
Jinjun Liu
Keyword(s):  
Reference Frame ◽  
Stationary Reference Frame

scholarly journals Control Strategy Based on Arm-Level Control for Output and Circulating Current of MMC in Stationary Reference Frame

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4160
Author(s):  
Waqar Uddin ◽  
Tiago D. C. Busarello ◽  
Kamran Zeb ◽  
Muhammad Adil Khan ◽  
Anil Kumar Yedluri ◽  
...  
Keyword(s):  
Reference Frame ◽  
Control Method ◽  
Second Harmonic ◽  
Harmonic Component ◽  
Effective Control ◽  
Level Control ◽  
Circulating Current ◽  
Stationary Reference Frame ◽  
Pr Controller ◽  
Dc Component

This paper proposed a control method for output and circulating currents of modular multilevel converter (MMC). The output and circulating current are controlled with the help of arm currents, which contain DC, fundamental frequency, and double frequency components. The arm current is transformed into a stationary reference frame (SRF) to isolate the DC and AC components. The AC component is controlled with a conventional proportional resonant (PR) controller, while the DC component is controlled by a proportional controller. The effective control of the upper arm and lower arm ultimately controls the output current so that it delivers the required power to the grid and circulating current in such a way that the second harmonic component is completely vanished leaving behind only the DC component. Comparative results of leg-level control based on PR controller are included in the paper to show the effectiveness of the proposed control scheme. A three-phase, five-level MMC is developed in MATLAB/Simulink to verify the effectiveness of the proposed control method.

scholarly journals MODEL OF TWO-MASS ELECTROMECHANICAL SYSTEM

2010 ◽  
Vol 2 (1) ◽  
pp. 85-89
Author(s):  
Sigitas Juraitis
Keyword(s):  
System Dynamics ◽  
Induction Motor ◽  
Reference Frame ◽  
Computer Model ◽  
Electromechanical System ◽  
Stationary Reference Frame

The computer model of electromechanical system with elasticity and clearance is elaborated. Model of induction motor is developed in stationary reference frame. Results of simulation are presented and discussed. Conclusions about influence of finite stiffness and clearance on the system dynamics are made.

scholarly journals Fault Reconstruction Based on Sliding Mode Observer for Current Sensors of PMSM

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Changfan Zhang ◽  
Huijun Liao ◽  
Xiangfei Li ◽  
Jian Sun ◽  
Jing He
Keyword(s):  
Reference Frame ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Variable Structure ◽  
Sensor Faults ◽  
Two Phase ◽  
Phase Current ◽  
Fault Reconstruction ◽  
Stationary Reference Frame ◽  
Sliding Mode Variable Structure

This paper deals with a method of phase current sensor fault reconstruction for permanent magnet synchronous motor (PMSM) drives. A new state variable is introduced so that an augmented system can be constructed to treat PMSM sensor faults as actuator faults. This method uses the PMSM two-phase stationary reference frame fault model and a sliding mode variable structure observer to reconstruct fault signals. A logic algorithm is built to isolate and identify the faulty sensor for a stator phase current fault after reconstructing the two-phase stationary reference frame fault signals, which allows the phase fault signals to be reconstructed. Simulation results are presented to illustrate the functionality of the theoretical developments.

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