A High-Performance Dynamic Controller For an Active Power Decoupler With AC-Side Storage Element

2019 ◽  
Vol 7 (3) ◽  
pp. 2041-2056 ◽  
Author(s):  
Sujata Bhowmick ◽  
Loganathan Umanand
Keyword(s):  
High Performance ◽  
Active Power ◽  
Storage Element ◽  
Dynamic Controller

Current Loop High Performance Compensation Control Strategy Analysis of Active Power Filter

2012 ◽  
Vol 588-589 ◽  
pp. 928-931
Author(s):  
Qian Qian Yuan
Keyword(s):  
High Performance ◽  
Active Power Filter ◽  
Pi Controller ◽  
Active Power ◽  
Current Loop ◽  
Static Error ◽  
Harmonic Current ◽  
Strategy Analysis ◽  
Power Filter ◽  
A Current

By particular theoretical analyzing on detection error of the traditional current loop proportion-integral (PI) controller, this paper points out the limitations of detection harmonic current at load side and proposes a current feedforward compensation controller. It can track harmonic instructions with zero static error and good compensation performance. Meanwhile, it overcomes the deficiencies of traditional load side detection harmonic current PI controller, with the traditional controller’s flexibility. Even if the load harmonic current is higher than the capacity of active power filter, it can basically maintain zero static error output and has certain theoretical significance and engineering value.

scholarly journals Asymmetrical Three-Level Inverter SiC-Based Topology for High Performance Shunt Active Power Filter

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 141 ◽  
Author(s):  
Rodrigo Guzman Iturra ◽  
Peter Thiemann
Keyword(s):  
Silicon Carbide ◽  
Electromagnetic Interference ◽  
High Performance ◽  
Active Power ◽  
Switching Frequency ◽  
Power Losses ◽  
Shunt Active Power Filter ◽  
Pure Silicon ◽  
Active Power Filters ◽  
Power Filters

Power quality conditioner systems, such as shunt active power filters (SAPFs), are typically required to have low power losses, high-power density, and to produce no electromagnetic interference to other devices connected to the grid. At the present, power converters with such a features are built using multilevel topologies based on pure silicon semiconductors. However, recently new semiconductors that offer massive reduction of power losses such as silicon carbide (SiC) MOSFETs have been introduced into the power electronics field. In the near future, the applications that demand the highest performance will be powered by multilevel converters based on SiC. In this paper a highly efficient three-level (3L) topology based entirely on silicon carbide (SiC) semiconductors for a SAPF is presented and analyzed in great detail. Furthermore, the proposed topology is compared with other full SiC-based conventional topologies: two level (2L), three-level T-type (3L-TNPC), and three-level neutral-point-clamped (3L-NPC) in terms of efficiency. The proposed asymmetrical topology has an efficiency superior to conventional all SiC 2L and 3L power circuits when the pulse or switching frequency of the system is set higher than 60 kHz. Further, for high current ratings, the asymmetrical topology has the advantage that it can be built just by cascading two half-bridge SiC modules.

scholarly journals Predictive Approach for Power Quality Improvement Based Direct Power Control

2018 ◽  
Vol 9 (2) ◽  
pp. 668
Author(s):  
Houssam Eddine Medouce ◽  
Hocine Benalla
Keyword(s):  
Power Control ◽  
High Performance ◽  
Reactive Power ◽  
Control Period ◽  
Active Power ◽  
Switching Frequency ◽  
State Function ◽  
Direct Power ◽  
Direct Power Control ◽  
Control Configuration

The extensive use of non-linear loads in industry becomes increasingly a serious problem that affects the quality of energy delivered to customers. Therefore, the shunt active power filter (SAPF) has emerged as an important industrial tool to eliminate induced harmonic currents   and compensating of reactive power. This paper proposes an improved control configuration for SAPF based on a modern technique called predictive direct power control (Predictive-DPC). The principle of this control is based on the direct regulation of the instantaneous active and reactive powers to guarantee a good energy quality on the grid side. For this purpose the appropriate average voltage vector which cancels power tracking errors is calculated by a simple predictive model at the bigining of each control period. This type of control includes various features such as the lack of look up table (LUTs) and closed current loops and the constant switching frequency is achieved through the use of PWM modulation.  The results of the simulation process show a high performance in the steady and transient state function for predictive-DPC control that might be a reasonable alternative to conventional DPC in the field of active power filtering.

scholarly journals Development of Control Structure for Hybrid Wind Generators with Active Power Capability

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Mehdi Niroomand ◽  
Dong-Jun Won
Keyword(s):  
High Performance ◽  
Control Structure ◽  
Storage System ◽  
Hierarchical Control ◽  
Energy System ◽  
Energy Storage System ◽  
Active Power ◽  
Power Management Strategy ◽  
Four Blocks ◽  
Power Capability

A hierarchical control structure is proposed for hybrid energy systems (HES) which consist of wind energy system (WES) and energy storage system (ESS). The proposed multilevel control structure consists of four blocks: reference generation and mode select, power balancing, control algorithms, and switching control blocks. A high performance power management strategy is used for the system. Also, the proposed system is analyzed as an active power filter (APF) with ability to control the voltage, to compensate the harmonics, and to deliver active power. The HES is designed with parallel DC coupled structure. Simulation results are shown for verification of the theoretical analysis.

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