Proceedings ArticleDOI
Constant frequency current control using a ramp comparison method for a DSTATCOM application
S. Srikanthan,Mahesh K. Mishra +1 more
- pp 1-6
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TLDR
In this paper, the authors proposed an analytical method for proper selection of the triangular carrier waveform in a ramp controller with hysteresis to achieve a reduced value of the constant switching frequency.Abstract:
The conventional hysteresis current controller is simple to implement, has inherent peak current-limiting capability, fast dynamic response etc. However, it suffers from the drawback of variable switching frequency, which may be prohibitively high, increasing the stress levels on the switches. Although a ramp controller may be used to achieve a constant switching frequency, the selection of frequency of the triangular carrier waveform plays a crucial role in maintaining the frequency of operation same as that of the carrier. If an appropriate frequency of the carrier is not chosen, the actual current may encounter undesirable effects of over-crossing and under-crossing. This paper proposes an analytical method for proper selection of the carrier so that the above-said effects are eliminated. The method is also extended to a ramp controller with hysteresis to achieve a reduced value of the constant switching frequency. Detailed simulation has been carried out through MATLAB to validate the proposed method.read more
Citations
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Proceedings ArticleDOI
Synchronous reference frame based current controller with SPWM switching strategy for DSTATCOM applications
TL;DR: In this article, a sine pulse width modulation (SPWM) based switching strategy for two-level neutral-point-clamped (NPC) voltage source inverter (VSI), used in distribution static compensator (DSATCOM) for unbalanced nonlinear load compensation is presented.
Journal ArticleDOI
SRF based current controller using PI and HC regulators for DSTATCOM with SPWM switching
TL;DR: In this paper, a distribution static compensator (DSTATCOM) is proposed for compensation of unbalanced nonlinear load with dq 0 current controller (using proportional integrator and harmonic compensation regulators) and Sinusoidal Pulse Width Modulation (SPWM) switching.
Hysteresis current regulation of voltage source inverters with constant switching frequency
TL;DR: In this paper, an integrated approach for constant frequency closed-loop hysteresis current control of a VSI is presented, which uses the fact that the switching frequency of a fixed-band hystresis-controlled inverter varies according to the aver
Proceedings ArticleDOI
Single-phase AC/DC/AC converter using cascaded multilevel inverter
Amit Kumar,Rajesh Gupta +1 more
TL;DR: In this paper, a uniform fixed switching frequency method of current control for both AC/DC and DC/AC converter stages has been proposed, where a multiple control loop is used to control the input AC current and DC link voltages of the AC and DC converter and a cascaded H-bridge multilevel inverter (CHBMLI) was used to obtain the multi-level AC output voltage for the DC and AC inverter.
References
More filters
Journal ArticleDOI
Current control techniques for three-phase voltage-source PWM converters: a survey
TL;DR: Current control techniques for three-phase voltage-source pulsewidth modulated converters, including bang-bang (hysteresis, delta modulation) controllers and predictive controllers with on-line optimization are reviewed.
Journal ArticleDOI
Current Control of VSI-PWM Inverters
David M. Brod,Donald W. Novotny +1 more
TL;DR: In this article, the inherent limitations of commanding voltages and currents in a three-phase load with an inverter are examined, and an overview of several current controllers described in the literature is presented, and computer simulations are used to compare performance.
Journal ArticleDOI
Comparison of current control techniques for active filter applications
TL;DR: This paper presents the comparative evaluation of the performance of three state-of-the-art current control techniques for active filters, the linear rotating frame current controller, the fixed-frequency hysteresis controller, and the digital deadbeat controller.
Journal ArticleDOI
An adaptive hysteresis-band current control technique of a voltage-fed PWM inverter for machine drive system
TL;DR: In this paper, an adaptive hysteresis-band control method where the band is modulated with the system parameters to maintain the modulation frequency to be nearly constant is described, and an interior permanent magnet (IPM) synchronous machine load is considered.
Journal ArticleDOI
A novel hysteresis control method for current-controlled voltage-source PWM inverters with constant modulation frequency
L. Malesani,Paolo Tenti +1 more
TL;DR: In this article, a hysteresis control method for three-phase current-controlled voltage-source PWM inverters is presented, which minimizes interference among phases, thus allowing phase-locked loop (PLL) control of the modulation frequency of inverter switches.