Hysteresis modulation-based sliding mode current control of Z-source DC-DC converter

Zaman, Haider; Zheng, Xuemei; Khan, Shahbaz; Ali, Husan; Wu, Xiaohua

doi:10.1109/ipemc.2016.7512306

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…In practice, it is difficult to find a suitable initial value for the sliding surface. Accordingly, combining (12) and (23) yields the following equation:…”

Section: B Approaching Law Designmentioning

confidence: 99%

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Sliding-Mode Control With Multipower Approaching Law for DC-Link Voltage of Z-Source Photovoltaic Inverters

et al. 2019

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Z-source photovoltaic inverters feature a unique topology and a special modulation strategy that enables a traditional two-stage system function through a single-stage structure. Therefore, Z-source inverters are expected to gain an extensive application when inputs change significantly. Given the objective of achieving DC-link voltage control based on small-signal model analyses, this study proposes a slidingmode control method with a multipower approaching law (MPAL) for the DC-link control of inverters. This novel approach can solve the slow convergence rate and serious buffeting of the traditional slidingmode control. The proposed approach makes the system state reach the sliding surface rapidly. The inherent buffeting of the sliding-mode control is simultaneously weakened and even eliminated in a few cases. The simulation and experimental analyses prove that the proposed sliding-mode control with an MPAL features significant advantages unlike the traditional sliding-mode control and provides a certain practical value. INDEX TERMS Sliding-mode control, Z-source PV inverter, multipower approaching law, DC-link voltage control.

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“…In practice, it is difficult to find a suitable initial value for the sliding surface. Accordingly, combining (12) and (23) yields the following equation:…”

Section: B Approaching Law Designmentioning

confidence: 99%

“…However, this paper did not present an analysis of the approximation law. An improved double-power convergence law was proposed in [23] to accelerate the approaching law. The proposed law could improve the convergence rate when the initial state |s 0 | is above 1.…”

Section: Introductionmentioning

confidence: 99%

Sliding-Mode Control With Multipower Approaching Law for DC-Link Voltage of Z-Source Photovoltaic Inverters

et al. 2019

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“…As input voltage and load resistance of the converter may vary, an appropriate controller that guarantees the robustness against uncertainties is required. The sliding mode control (SMC) method, due to the advantage of the variable structure nature, is extensively used for power converters control [7–21]. However, the ideal SMC cannot be employed because of the bounded switching frequency of the converters.…”

Section: Introductionmentioning

confidence: 99%

“…Since the state trajectory tends to the sliding surface, S = 0, it will not guarantee that the voltage and current error converge to zero individually. In [21], the hysteresis modulation‐based SMC of a ZSC was presented. The reference value of the current controller was derived by a conventional proportional–integral (PI) controller.…”

Section: Introductionmentioning

confidence: 99%

Alleviating the right‐half‐plane zero effect on Z‐source converter output voltage regulation using the cascaded sliding mode controller

Ahmadzadeh

Markadeh

Abjadi

2020

IET power electron.

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A Multi-Slope Sliding-Mode Control Approach for Single-Phase Inverters under Different Loads

Khajeh-Shalaly

Shahgholian

2016

Electronics

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Abstract:In this paper, a new approach to the sliding-mode control of single-phase inverters under linear and non-linear loads is introduced. The main idea behind this approach is to utilize a non-linear, flexible and multi-slope function in controller structure. This non-linear function makes the controller possible to control the inverter by a non-linear multi-slope sliding surface. In general, this sliding surface has two parts with different slopes in each part and the flexibility of the sliding surface makes the multi-slope sliding-mode controller (MSSMC) possible to reduce the total harmonic distortion, to improve the tracking accuracy, and to prevent overshoots leading to undesirable transient-states in output voltage that occur when the load current sharply rises. In order to improve the tracking accuracy and to reduce the steady-state error, an integral term of the multi-slope function is also added to the sliding surface. The improved performance of the proposed controller is confirmed by simulations and finally, the results of the proposed approach are compared with a conventional sliding-mode controller (SMC) and a synchronous reference frame PI (SRFPI) controller.

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Hysteresis modulation-based sliding mode current control of Z-source DC-DC converter

Cited by 4 publications

References 8 publications

Sliding-Mode Control With Multipower Approaching Law for DC-Link Voltage of Z-Source Photovoltaic Inverters

Sliding-Mode Control With Multipower Approaching Law for DC-Link Voltage of Z-Source Photovoltaic Inverters

Alleviating the right‐half‐plane zero effect on Z‐source converter output voltage regulation using the cascaded sliding mode controller

A Multi-Slope Sliding-Mode Control Approach for Single-Phase Inverters under Different Loads

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