Application of the NIOS II processor-FPGA on the digital control of a single-phase PFC rectifier

Based on Nios II embedded processor control module, a digital control system was designed for wire feeding control of gas tungsten arc welding(GTAW). In the control system FPGA wave module is used to control the movement of the DC servo motor, and the digital control of pulsed wire feeder for GTAW was achieved. One and the same control module with Nios II embedded processor is used to control the wire feeder and the welding power source. Thus, the current parameter of pulsed welding arc can be obtained and used directly for controlling the speed of wire feeding. At last, the experiment results are provided to verify the validity.

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ASIC and FPGA based DPWM architectures for single-phase and single-output DC-DC converter: a review

Open Engineering ◽

10.2478/s13531-013-0118-5 ◽

2013 ◽

Vol 3 (4) ◽

Cited By ~ 2

Author(s):

Subhash Chander ◽

Pramod Agarwal ◽

Indra Gupta

Keyword(s):

Digital Control ◽

Pulse Width ◽

Single Phase ◽

Pulse Width Modulation ◽

Power Converter ◽

Comparative Performance ◽

Single Output ◽

Digital Pulse

AbstractPulse width modulation (PWM) has been widely used in power converter control. This paper presents a review of architectures of the Digital Pulse Width Modulators (DPWM) targeting digital control of switching DC-DC converters. An attempt is made to review the reported architectures with emphasis on the ASIC and FPGA implementations in single phase and single-output DC-DC converters. Recent architectures using FPGA’s advanced resources for achieving the resolution higher than classical methods have also been discussed. The merits and demerits of different architectures, and their relative comparative performance, are also presented. The Authors intention is to uncover the groundwork and the related references through this review for the benefit of readers and researchers targeting different DPWM architectures for the DC-DC converters.

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1MHz variable multi sampling digital control of single phase PWM inverter using FPGA based hardware controller

2012 IEEE Energy Conversion Congress and Exposition (ECCE) ◽

10.1109/ecce.2012.6342503 ◽

2012 ◽

Cited By ~ 4

Author(s):

Hiroki Uchida ◽

Tomoki Yokoyama

Keyword(s):

Digital Control ◽

Single Phase ◽

Pwm Inverter

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The Effect of Digital Process of Single-Phase Photovoltaic Grid Connected Inverter

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1070-1072.60 ◽

2014 ◽

Vol 1070-1072 ◽

pp. 60-63

Author(s):

Hong Tao Shan ◽

Bin Zhou

Keyword(s):

Digital Control ◽

Single Phase ◽

Zero Order ◽

System Stability ◽

Stability Range ◽

Delay Control ◽

One Step ◽

Grid Connected Inverter ◽

The Stability ◽

Sample Time

Digital control possesses evident advantages and has become a mainstream control of photovoltaic grid connected inverter.The mathematical model and parameter setting of the single phase photovoltaic grid connected inverter with L filter was introduced in the paper.It was analysed on the effect on system stability of digital process from the two aspects which were the zero-order-hold and one-step-delay control. The bode diagram was verified the theoretical analysis on system stability.The conclusions were made that the introduction of digital control reduces the critical stable gain of photovoltaic grid connected inverter system,system stability is varied with sample time, the parameters of L can affect the system stability range,zero-order-hold reduces the stability range and limits the performance improved of digital control system,one-step-delay control on photovoltaic grid connected inverter reduces again the stability range on the basis of the zero-order-hold control.

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