Parameter Variation Tolerant Robust Current Sensorless Control of a Single-Phase Boost PFC

2021 ◽  
pp. 1-1
Author(s):  
Ashwin Chandwani ◽  
Saikat Dey ◽  
Ayan Mallik
Keyword(s):  
Single Phase ◽  
Sensorless Control ◽  
Parameter Variation ◽  
Current Sensorless

scholarly journals Current Sensorless Control Algorithm for Single-Phase Three-Level NPC Inverter

2014 ◽  
Vol 7 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Alexander Suzdalenko ◽  
Janis Zakis ◽  
Ingars Steiks
Keyword(s):  
Control Algorithm ◽  
Single Phase ◽  
Simulation Analysis ◽  
Sensorless Control ◽  
Conduction Time ◽  
Control Loops ◽  
Theoretical Assumptions ◽  
Mathematical Equations ◽  
First Time ◽  
Current Sensorless

Abstract The current measurement is becoming a challenging task in power converters operating at high switching frequencies, moreover traditional control system requires two control loops - first (slow) regulates DC-link voltage, second (fast) controls the shape of current, that all together results in complicated transfer function and long transition periods. The current sensorless control (CSC) allows neglecting the mentioned problems. This research for the first time presents the solution of CSC implementation in single-phase three-level neutral point clamped inverter. Mathematical equations were defined for inductor current peaks and transistor conduction time during discontinuous and continuous conduction modes, as well as major problem of current fitting between different voltage levels (consequently with different current peak-to-peak values) was solved, providing two solutions - pre-fitting and post-fitting trajectories. The verification of our theoretical assumptions and analytical equations was confirmed by the simulation analysis. Challenges of real experiments are discussed in the conclusion.

scholarly journals An Inductor Current Sensorless Control Strategy Based on Modified VSG Method for Single-Phase Microgrid Application With Seamless Transfer Capability

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhi Zhang ◽  
Junkai Wu ◽  
Liupeng Zheng ◽  
Di Xie ◽  
Xiao Tang
Keyword(s):  
Control Strategy ◽  
Single Phase ◽  
Reactive Power ◽  
Sensorless Control ◽  
Synchronous Generator ◽  
Response Speed ◽  
Voltage Regulation ◽  
Luenberger Observer ◽  
Single Phase Inverter ◽  
Current Sensorless

This paper proposes an inductor current sensorless control strategy based on modified virtual synchronous generator (VSG) method for single-phase inverter-interfaced microgrid application. Firstly, the outer power loop with Q-U integral term is presented for output reactive power enhancement, and an inner voltage regulation loop based on luenberger state observer is proposed to reduce the inductor current sensor. Meanwhile, in order to improve the response speed of the observer, the luenberger observer is designed based on the optimal pole assignment method. Secondly, a seamless switching strategy based on the modified VSG method is proposed, which can realize the seamless transition between the island mode and grid-connected mode. Finally, a single-phase 3kW VSG prototype is built, and the effectiveness and correctness of the proposed control strategy is verified by the simulation and experimental results.

Current Sensorless Control for a Wound Rotor Synchronous Machine Based on Flux Linkage Model

2021 ◽  
pp. 1-1
Author(s):  
Peyman Haghgooei ◽  
Adrien Corne ◽  
Ehsan Jamshidpour ◽  
Noureddine Takorabet ◽  
Davood Arab Khaburi ◽  
...  
Keyword(s):  
Sensorless Control ◽  
Synchronous Machine ◽  
Flux Linkage ◽  
Wound Rotor Synchronous Machine ◽  
Current Sensorless ◽  
Linkage Model
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