Predictive Current Control Strategy of Three-phase PWM Rectifier under Power Network Unbalance

In this, work the finite control set (FCS) model predictive direct current control strategy with constraints, is applied to drive three-phase induction motor (IM) using the well-known field-oriented control. As a modern algorithm approach of control, this kind of algorithm decides the suitable switching combination that brings the error between the desired command currents and the predicated currents, as low as possible, according to the process of optimization. The suggested algorithm simulates the constraints of maximum allowable current and the accepted deviation, between the desired command and actual currents. The new constraints produce an improvement in system performance, with the predefined error threshold. This can be applied by avoiding the switching combination that exceeds the limited values. The additional constraints are more suitable for loads that require minimum distortion in harmonic and offer protection from maximum allowable currents. This approach is valuable especially in electrical vehicle (EV) applications since its result offers more reliable system performance with low total harmonics distortion (THD), low motor torque ripple, and better speed tracking.

Download Full-text

Sliding mode and predictive current control strategy of the three-phase Vienna rectifier

Journal of Power Electronics ◽

10.1007/s43236-020-00055-1 ◽

2020 ◽

Vol 20 (3) ◽

pp. 743-753 ◽

Cited By ~ 2

Author(s):

Xingtian Feng ◽

Yuanyuan Tao ◽

Xiao Cui ◽

Kang Shao ◽

Yubin Wang

Keyword(s):

Control Strategy ◽

Sliding Mode ◽

Current Control ◽

Vienna Rectifier ◽

Three Phase

Download Full-text

Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

Energies ◽

10.3390/en12214093 ◽

2019 ◽

Vol 12 (21) ◽

pp. 4093 ◽

Cited By ~ 2

Author(s):

Mora ◽

Núñez ◽

Visairo ◽

Segundo ◽

Camargo

Keyword(s):

Storage System ◽

Input Voltage ◽

Voltage Regulation ◽

Current Control ◽

Loop Current ◽

Pwm Rectifier ◽

Lcl Filter ◽

Loop Control ◽

Practical Applications ◽

Three Phase

This paper deals with a battery energy storage system (BESS) in only one of its multiple operating modes, that is when the BESS is charging the battery bank and with the focus on the control scheme design for the BESS input stage, which is a three-phase LCL-filter PWM rectifier. The rectifier's main requirements comprise output voltage regulation, power factor control, and low input current harmonic distortion, even in the presence of input voltage variations. Typically, these objectives are modeled by using a dq model with its corresponding two-loop controller architecture, including an outer voltage loop and a current internal loop. This paper outlines an alternative approach to tackle the problem by using not only an input–output map linearization controller, with the aim of a single-loop current control, but also by avoiding the dq modeling. In this case, the voltage is indirectly controlled by computing the current references based on the converter power balance. The mathematical model of the three-phase LCL-filter PWM rectifier is defined based on the delta connection of the filter, which accomplishes the requirements of a 100 kW BESS module. Extensive simulation results are included to confirm the performance of the proposed closed-loop control in practical applications.

Download Full-text