Frequency adaptive PR-controller for compensation of current harmonics

Uphues, Andreas; Notzold, Kilian; Wegener, Ralf; Soter, Stefan

doi:10.1109/iecon.2014.7048792

Cited by 21 publications

(10 citation statements)

References 2 publications

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“…The elevated switching rate has numerous advantages such as lesser ripple current and quicker transient response, for example, if a motor is hastened starting idle to rated speed, and in order to have small current alteration the inverter switches [10,11] are made to operate at their highest possible switching…”

Section: ░ 2 Literature Reviewmentioning

confidence: 99%

Digital Hysteresis Control Algorithm for Switched Inductor Quasi Z-Source Inverter with Constant Switching Frequency

Malathi

Selvan

Meikandasivam

2022

IJEER

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In this paper, a digital hysteresis current limit controller is developed for Switched Inductor Quasi Z-Source Inverter (SLQZSI). Traditional methods like hysteresis current fixed limit and adjustable hysteresis current limit techniques changes the hysteresis bandwidth in accordance to modulating frequency and gradient of reference current. The operating shifting frequency of typical approaches oscillates and crosses the intended steady shifting frequency under noise. It leads to undesirable heavy interference between the phases and more power loss. In the planned digital hysteresis current limit technique, the hysteresis current limit is calculated by resolving the optimization problem. In the proposed approach the operating shifting frequency is kept same or inferior to the intended steady shifting frequency even under noise. Hence the planned digital hysteresis current limit algorithm maintains the output current steady and power loss is minimized which is not promised by the conservative techniques. To compare different control strategies in terms of nature of operating switching frequency and harmonic performance simulations are built on the MATLAB/SIMULINK

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Section: ░ 2 Literature Reviewmentioning

confidence: 99%

Digital Hysteresis Control Algorithm for Switched Inductor Quasi Z-Source Inverter with Constant Switching Frequency

Malathi

Selvan

Meikandasivam

2022

IJEER

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“…Especially its capacity for remunerating -harmonics in the present-waveforms was a fundamental-component. "_As an outcome of the displace of the generator-sideconverter by a direct diode-rectifier, harmonics with variable-frequencies into reliance of the generatorrecurrence shown-up in the present-waveforms" [14] 'Complex-controllers' (for-e.g., diverse turning dqplots or resonant-based) were much of the time required to reimburse low repeat grid-voltage foundation mutilation and a LCL-channel was regularly gotten for the elevatedrecurrence-one. The possible broad assortment of gridimpedance regards (distributed-generation was appropriate for remote domains with spiral scattering plants) challenge the-consistent quality &effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Hysteresiscontrolled Quasi Z-Sourceinverter Fed Induction Motordrivesystem with Enhanced Response

Himabindu*,

Sreenivasan,

Kiranmayi

2020

IJITEE

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“-This-effort deals with-enhancement in-dynamicresponse-of-QZSIfed-induction-motorframework”. The objective of this effort is to develop-a-closed-loop-controlled-QZSI-fed induction-motor-framework that provides a steady-rotor-speed. - This has been realized using -closed-loop-controlled-QZSIIMDframework. The ‘QZSI’ is exploited to switch it to ‘threephase-AC’. The yield of-3phase-inverter is sorted before it is applied to a ‘3phase-Induction-motor using a OTT--filter’. The methodology involves simulation of open-loop QZSI-IMD system and closed loop PR and HC controlled QZSI-IMD systems.The result obtained using Proportional-Resonant(PR) controlled QZSI-IMD system is compared with Hysteresis controlled QZSIIMD system and it is proved that HC based QZSI-IMD system produces better dynamic-response than PR controlled QZSI-IMD system . The proposed Hysteresis controlled QZSI-IMD system has advantages like low settling time and less peak –over-shoot.

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“…To obtain the best performance from the PR control, its resonant frequency must be identical to the generator frequency [23]. Thus, it should be noticed that an adaptive adjustment of the PR control is necessary when generator frequency variations are registered in the system [24], [25]. The ideal way to accomplish this is to observe the precise generator frequency in real time to modify the PR parameters [26].…”

Section: Introductionmentioning

confidence: 99%

A Novel Control Scheme for T-Type Three-Level SSG Converters Using Adaptive PR Controller with a Variable Frequency Resonant PLL

Lin

Huang²,

Wan

2016

Journal of Power Electronics

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In this paper, a novel quasi-direct power control (Q-DPC) scheme based on a resonant frequency adaptive proportional-resonant (PR) current controller with a variable frequency resonant phase locked loop (RPLL) is proposed, which can achieve a fast power response with a unity power factor. It can also adapt to variations of the generator frequency in T-type Three-level shaft synchronous generator (SSG) converters. The PR controller under the static α-β frame is designed to track ac signals and to avert the strong cross coupling under the rotating d-q frame. The fundamental frequency can be precisely acquired by a RPLL from the generator terminal voltage which is distorted by harmonics. Thus, the resonant frequency of the PR controller can be confirmed exactly with optimized performance. Based on an instantaneous power balance, the load power feed-forward is added to the power command to improve the anti-disturbance performance of the dc-link. Simulations based on MATLAB/Simulink and experimental results obtained from a 75kW prototype validate the correctness and effectiveness of the proposed control scheme.

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Frequency adaptive PR-controller for compensation of current harmonics

Cited by 21 publications

References 2 publications

Digital Hysteresis Control Algorithm for Switched Inductor Quasi Z-Source Inverter with Constant Switching Frequency

Digital Hysteresis Control Algorithm for Switched Inductor Quasi Z-Source Inverter with Constant Switching Frequency

Hysteresiscontrolled Quasi Z-Sourceinverter Fed Induction Motordrivesystem with Enhanced Response

A Novel Control Scheme for T-Type Three-Level SSG Converters Using Adaptive PR Controller with a Variable Frequency Resonant PLL

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