A New Control Strategy for Voltage-Type PWM Inverter to Realize Zero Steady-State Control Error

Wang, Xinrong; Ying-chuan, QI

doi:10.1109/appeec.2009.4918067

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…In [1], [2] and [3] a resonant element is proposed in the control diagram, introduced instead of the integral component in the PI controller for controlling a sinusoidal output . In [5] the resonant element is added to the transfer function of the PI controller, resulting in a controller with three components, a proportional (P), an integral (I) and a sinusoidal (resonant) component.…”

Section: Adding Of a Resonant Element In The Open Loop Transfer Functmentioning

confidence: 99%

Zero steady-state error PWM control system for sinusoidal voltage

Stanciu

Teodorescu

2015

2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

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The paper presents a PWM control system of a sinusoidal voltage using a single-phase inverter that comprises at the output a LC low-pass filter with resistive load. The PWM control strategy of a sinusoidal voltage and the optimization of the control loop via the modulus criterion, for step input signals, are presented. The steady-state error of the PWM control system is analyzed for sinusoidal input signal and methods for reducing the steady-state error by increasing the switching frequency and by adding an integral element series to the modulus criterion optimized controller are presented. If analyzed as a linear system, the addition of an integral element would make the system unstable, due to a double pole in the origin, but it is shown that by analyzing the system as a nonlinear system having an ideal relay-type nonlinearity, stability is preserved. Further, knowing that the steady-state error for sinusoidal input can be nullified by introducing a resonant element, a new utilization of a resonant element is proposed, namely its introduction instead of the integral element in the optimal transfer function according to the modulus criterion. The theoretical considerations are confirmed by simulation results.

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Section: Adding Of a Resonant Element In The Open Loop Transfer Functmentioning

confidence: 99%

Zero steady-state error PWM control system for sinusoidal voltage

Stanciu

Teodorescu

2015

2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

View full text Add to dashboard Cite

show abstract

“…This element is tuned to the frequency of input signal, and thus, provides infinity gain at the point of frequency. Further, many literature [6][7][8] have suggested the use of resonant elements in parallel for the robust tracking of input signal with multiple dominant frequencies.…”

Section: Introductionmentioning

confidence: 99%