An Active Disturbance Rejection Control-Based Voltage Control Strategy of Single-Phase Cascaded H-Bridge Rectifiers

Su, Yulan; Ge, Xinglai; Xie, Dong; Wang, Kexin

doi:10.1109/tia.2020.3004316

Cited by 23 publications

(15 citation statements)

References 28 publications

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“…Besides, the dynamic performance under load steps down is worse than that under load steps up. To verify the decoupling ability of the proposed method between the upper-and the lower layer control system, Figure 16 illustrates the variation waveforms of decoupling coefficient when R L3 steps up from 20 to 30 Ω. J 1 -J 4 represent the decoupling coefficients of the method in [13,14,17] and the proposed method, respectively. From Figure 14, J 1 and J 3 do not converge after the load changed which is because the decoupling problem is not considered in [13] and [17].…”

Section: Experimental Results Of Voltage Balancing Controlmentioning

confidence: 99%

“…It is known from (13), when p is greater than 0, the steadystate error err 1 (∞) is 0, and when p = 0, the steady-state error is…”

Section: Steady-state Error Analysis Of the Vbc Systemmentioning

confidence: 99%

“…In duty cycle compensation methods, the classic method is the proportional-integral-based (PI-based) VBC. There are N PI controllers controlling the dcside error of N H-bridge cells to get the compensation duty cycle [11][12][13]. The overall duty cycle generated by the upper layer control system is then combined to obtain the final duty cycle for each cell.…”

Section: Introductionmentioning

confidence: 99%

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An improved voltage balancing control method for single‐phase cascaded H‐bridge rectifier considering grid‐side DC offset

Chen

et al. 2022

IET Power Electronics

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An improved voltage balancing control (VBC) method is proposed in this paper to optimize control performance of single‐phase cascaded H‐bridge rectifier (CHBR). Firstly, the steady‐state error of the VBC method based on capacitor energy estimation is analyzed. An error compensation method is therefore presented to eliminate the steady‐state error. The proposed method delivers fast dynamic performance without steady‐state error. In addition, it requires less parameter tuning than traditional proportional‐integral‐based (PI‐based) VBC methods, and coupling effect between the upper‐ and the lower layer control system is also eliminated in both dynamic and steady state. Moreover, a mixed second‐ and third‐order generalized integrator (MSTOGI) method is applied to suppress the dc offset of grid voltage, which may occur in the process of sampling or conversion. Finally, a physical experiment platform is developed and a series of comparisons are given to verify the feasibility of the proposed method.

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Section: Experimental Results Of Voltage Balancing Controlmentioning

confidence: 99%

“…It is known from (13), when p is greater than 0, the steadystate error err 1 (∞) is 0, and when p = 0, the steady-state error is…”

Section: Steady-state Error Analysis Of the Vbc Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An improved voltage balancing control method for single‐phase cascaded H‐bridge rectifier considering grid‐side DC offset

Chen

et al. 2022

IET Power Electronics

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“…In order to ensure high-quality input current waveform control and effectively improve the dynamic performance of a single-phase AC-DC converter, some scholars have eliminated the ripple component of DC output voltage from the hardware level of the main circuit. A passive scheme is adopted, in which the LC resonant branch is paralleled on the DC output bus of a single-phase AC-DC converter to bypass the second harmonic current at the output [10]. The main circuit is embedded with a branch especially used to buffer the instantaneous power difference to balance the instantaneous power between the input and output [11].…”

Section: Introductionmentioning

confidence: 99%

Research on Cascaded Single Phase PFC Based on Predictive PI Control

Shi

Qian

2022

WEVJ

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In order to improve the charging speed and reduce the occupied volume of an electric vehicle charger, a single-phase boost power factor corrector (PFC) system with cascade CHB (cascaded H-bridge) topology was adopted. Due to the periodic fluctuation of single-phase AC input, there is a large double power frequency ripple component in the output voltage of an AC-DC converter. When capacitor voltage is used as output for feedback control, the control system has the characteristics of a non-minimum phase system. In light of these factors that affect the dynamic stability of the system, a control method is proposed to improve the dynamic characteristics of the system without affecting its steady-state performance. The predictive PI control strategy was adopted to predict the error input signal of the lag process to attenuate the jitter in the control system and improve the dynamic performance and anti-interference of the system. Finally, the feasibility of the scheme was verified by experiments.

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“…Besides, there is another kind of control strategy that does not rely on the PID controller. For example, a three-phase phase-shift (TPS) control strategy is proposed for the full-bridge three-level (FBTL) DC/DC converter [10], a dual phase-shift control method widely used in the DC-DC converter [11,12], and active disturbance rejection control (ADRC) technology which has been applied to the field of switching power supply [13,14]. e ADRC control strategy is similar to the control strategy used in this paper.…”

Section: Introductionmentioning

confidence: 99%

Research on a Self-Coupling PID Control Strategy for a ZVS Phase-Shift Full-Bridge Converter

Sun

Liu

Zhang

et al. 2021

Mathematical Problems in Engineering

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As an important part of the high-frequency switching power supply, the control accuracy of the phase-shift full-bridge converter directly affects the efficiency of the switching power supply. To improve the stability and antidisturbance ability of phase-shift control systems, this article presents a dual closed-loop control system based on Self-Coupling PID (SC-PID) control and applies the SC-PID control strategy to the voltage control of the phase-shift full-bridge converter. To begin with, in response to the contradiction of traditional PID, SC-PID breaks the limitation of PID control by introducing a new control idea instead of weighted summation of each gain, which fundamentally solves the contradiction between overshoot and rapidity. Then, using the dimension attributes between gains to develop new tuning rules to solve the system load disturbance, output voltage deviation from the reference value, and other problems, the purpose is to ensure the stability of the output voltage and improve the control effect. At the same time, the stability of the whole control system is analyzed in the complex frequency domain. Finally, with the same main circuit and parameters, three types of controllers are built separately, and using MATLAB for simulation comparison, the simulation results show that the control system based on SC-PID has better steady-state accuracy, faster response, and better robustness, which proves the feasibility of the SC-PID control idea.

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An Active Disturbance Rejection Control-Based Voltage Control Strategy of Single-Phase Cascaded H-Bridge Rectifiers

Cited by 23 publications

References 28 publications

An improved voltage balancing control method for single‐phase cascaded H‐bridge rectifier considering grid‐side DC offset

An improved voltage balancing control method for single‐phase cascaded H‐bridge rectifier considering grid‐side DC offset

Research on Cascaded Single Phase PFC Based on Predictive PI Control

Research on a Self-Coupling PID Control Strategy for a ZVS Phase-Shift Full-Bridge Converter

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