Modified Single-Loop Current Sensorless Control for Single-Phase Boost-Type SMR With Distorted Input Voltage

Abstract

The first single-loop current sensorless control (SLCSC) for single-phase boost-type switching-mode-rectifier (SMR) had been proposed in the prior paper. SLCSC with sinusoidal input voltage possesses good performance, but its performance with distorted input voltage should be improved. In this paper, a modified SLCSC is proposed and implemented in a field-programmable gate array (FPGA)-based system to obtain better performance than SLCSC. Instead of the phase-shift signal in SLCSC, the inductor voltage amplitude signal becomes the output of proportional-plus-integral (PI)-type voltage controller in the modified SLCSC. The provided simulation and experiment results demonstrate the modified SLCSC.Index Terms-Current sensorless control, switching mode rectifier.

Universal Digital Controller for Boost CCM Power Factor Correction Stages Based on Current Rebuilding Concept

“…In continuous conduction mode (CCM) Boost PFC converters, the most recent works proposing current sensorless solutions to obtain power factor correction are [12]- [17]. A PFC without any ADC, using analog comparisons is presented in [12], while a predictive duty-cycle is presented in [13] and [14] with an implementation in a DSP and in an FPGA, respectively.…”

Current error compensation for current-sensorless power factor corrector stage in continuous conduction mode

“…The previous works [10][11][12][13], which also avoid the input current measurement, propose a PFC digital control that includes the measurement of the parasitic elements (r L , V FD , r dson ) and applies a duty cycle command d, according to these elements. But parasitic elements influence change with the temperature, frequency and the components used in the PFC converter.…”

“…Focused on proposing cost-effective solutions without losing performance, current estimation techniques based on voltage measurements are presented in [2][3][4] and [5] for single-phase and multiphase converter applications respectively. For PFC applications, approaches like [6][7][8][9][10][11][12][13] propose the elimination of the traditionally required analog-to-digital conversions. Different authors have presented approaches for Boost sensorless PFC controllers [10][11][12][13] where parasitic elements are measured and taken into account in the controller to compensate for their effects.…”

“…For PFC applications, approaches like [6][7][8][9][10][11][12][13] propose the elimination of the traditionally required analog-to-digital conversions. Different authors have presented approaches for Boost sensorless PFC controllers [10][11][12][13] where parasitic elements are measured and taken into account in the controller to compensate for their effects. This work is based on [6,7] where the input rebuilding concept is used.…”

A Simple Grid-Voltage-Sensorless Control Scheme for PFC Boost Converters

“…For example, in [16], even though the proposed control scheme was made simple by having no sensors to detect the grid current or dc output voltage, its dynamic response was quite poor, and the control system did not consider the effects of converter parameter variations. In [17]- [20], both single-loop and multi-loop grid current senseless controls were introduced by considering the effects of the difference between the nominal and real circuit parameters. In addition, a nonlinear carrier control technique that allows the PFC boost converters to operation under continuous conduction mode without grid voltage sensing was developed in [21] and [22].…”