Design of a current mode PI controller for a single-phase PWM inverter

Cherati, S. Mahmodi; Azli, Naziha Ahmad; Ayob, Shahrin Md.; Mortezaei, Ali

doi:10.1109/iapec.2011.5779864

Cited by 38 publications

(17 citation statements)

References 7 publications

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“…In order to obtain the preferable value of switching frequency, the value of the cut-off frequency should be lower or equal to the value of switching frequency, Fs divided by 10. The value of capacitor for the filter can be obtained after attenuating Equations (10) and (11). the capacitor current.…”

Section: Energy-saving Circuitmentioning

confidence: 99%

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Energy Saving Analysis and Simulation for Home Electricity

Barsoum¹,

Talib²

2020

JPEE

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This paper presents the energy saving method by applying the voltage control technique on a single-phase AC source to a thyristor rectifier and an IGBT inverter with LC filter. Based on the LC filter parameter, the values of the gain for the controller are obtainable. The proposed controller structure consists of two loops arranged in a cascaded model. The output of the first loop is the capacitor current. This current is added to the load current in order to obtain the current reference. This reference current value will be compared with the inverter current which produces the error signal to be fed into the second loop in the cascade system. The output of the second loop is the inverter voltage. This voltage is added to the load voltage to produce the voltage reference. This reference is fed to the pulse width modulation generator via the controller and compared with the triangular wave. This energy-saving circuit is designed in blocks using MATLAB Simulink.

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Section: Energy-saving Circuitmentioning

confidence: 99%

“…This current is added to the load current in order to obtain the current reference. This reference current value will be compared to the current from the inverter producing the error value to be fed into the second loop in the cascade system [11].…”

Section: Energy-saving Circuitmentioning

confidence: 99%

Energy Saving Analysis and Simulation for Home Electricity

Barsoum¹,

Talib²

2020

JPEE

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show abstract

“…that feedback linearizes the first equation of (1). From equations (24), (26) and (28) we can propose the control law:…”

Section: B Control Law For Pvmentioning

confidence: 99%

“…The model is derived under the assumption that all the converter elements are ideal. The PI controllers are designed using method cited in ( [26], [27]).…”

Section: Comparison With Pi Controlmentioning

confidence: 99%

Nonlinear control of a DC MicroGrid for the integration of distributed generation based on different time scales

Siad

Malkawi

Damm

et al. 2019

International Journal of Electrical Power & Energy Systems

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This paper is a contribution for DC MicroGrid control and introduces a rigorous dynamics' analysis, taking into account intermittency effects. We propose an hierarchical control scheme, based on nonlinear control theory, in particular Lyapunov, backstepping and input/output feedback linearization. The resulting algorithms are simple, comparable to standard nested PIs, and do not need important computer resources, such to be easily implemented in small micro-controllers. In addition to allowing an explicit stability analysis, they present the advantage of preserving performance for the whole operation region, and to be easy to tune. The proposed DC MicroGrid and its control are then verified either by computer simulations and by experiments. The results show the good performance of the system under variations on production and on consumption. Finally, the proposed scheme is compared to standard PI based controls, with better performance with simpler tuning procedure.

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“…The diagram-aided method is basically a computer-based single-input, single-output (SISO) tool in MATLAB to obtain the parameters with the help of defining the system transfer function. The SISO tool gives the bode and root locus plot where the poles and zeros can be adjusted to get the desired output and corresponding parameters of the controller [21]. Now the impact of the grid impedance on the stability of the voltage control loop in the conventional scheme is analyzed.…”

Section: Conventional Control Schemementioning

confidence: 99%

Supercapacitor utilization for power smoothening and stability improvement of a hybrid energy system in a weak grid environment

Sharma¹,

Suhag²

2018

Turk J Elec Eng & Comp Sci

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Abstract:In this paper, a novel control scheme based on the application of a supercapacitor (SC) is proposed for power smoothening and stability improvement of a hybrid energy system (HES) in weak grid conditions. The basic property of fast charging/discharging of the SC is utilized to design the proposed control. In weak grid conditions, the control structure is proposed for power smoothening and DC link voltage regulation with the help of the SC. Moreover, the stability is increased, ripples in voltage are reduced, there is fast dynamic response, and oscillations are damped out under different conditions. In conventional control, voltage controller stability is the main concern under weak grid conditions. On the other hand, the proposed control scheme has independent voltage controller stability in weak grid conditions. Drawbacks of the conventional scheme due to coupling components and large grid impedance in a weak grid are illustrated mathematically. The design and the steady-state stability analysis of the proposed control scheme are explained and compared with the conventional scheme. The HES is modeled and simulated in MATLAB/Simulink to verify the enhanced performance of the proposed scheme. In comparison with the conventional control strategy, the proposed scheme has an improved DC link voltage profile and smoothened power, resulting in the fast dynamic response of the HES connected to the weak grid.

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Design of a current mode PI controller for a single-phase PWM inverter

Cited by 38 publications

References 7 publications

Energy Saving Analysis and Simulation for Home Electricity

Energy Saving Analysis and Simulation for Home Electricity

Nonlinear control of a DC MicroGrid for the integration of distributed generation based on different time scales

Supercapacitor utilization for power smoothening and stability improvement of a hybrid energy system in a weak grid environment

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