Three-phase step-down reversible AC-DC power converter

Green, Tim; Taha, Mohamad H; Rahim, N.A.; Williams, B.W.

doi:10.1109/63.558750

Cited by 43 publications

(24 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results show that the controller is able to track the reference voltage with zero steady-state error while compensating for the huge starting voltage/current. However, in practice, tuning of a suitable K p may be preferred to reduce current stress on the semiconductors during transients [15]. A fast and lightly damped system gives a fast step response but with the consequence of large-amplitude capacitor-charging current.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…From the phase voltage definitions of (1)-(3), the average bridge voltage V L(average) simplifies to (4) [15], [21].…”

Section: Mathematical Analysis Of Power Convertermentioning

confidence: 99%

“…4. The control principle is applicable to any AC-DC buck converters, e.g., three-switch 12-diode [13][14][15][16] or bidirectional three-phase [20].…”

Section: Introductionmentioning

confidence: 99%

“…3. The transient response can be controlled by tuning the proportional gain (K p ) only, which is an advantage over cascaded proportional-integral-derivative (PID) that tunes two or three parameters [15], [19]. 4.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Single-Input Single-Output Approach by using Minor-Loop Voltage Feedback Compensation with Modified SPWM Technique for Three-Phase AC-DC Buck Converter

Alias

Rahim

Hussain³

2013

Journal of Power Electronics

View full text Add to dashboard Cite

The modified sinusoidal pulse-width modulation (SPWM) is one of the PWM techniques used in three-phase AC-DC buck converters. The modified SPWM works without the current sensor (the converter is current sensorless), improves production of sinusoidal AC current, enables obtainment of near-unity power factor, and controls output voltage through modulation gain (ranging from 0 to 1). The main problem of the modified SPWM is the huge starting current and voltage (during transient) that results from a large step change from the reference voltage. When the load changes, the output voltage significantly drops (through switching losses and non-ideal converter elements). The single-input single-output (SISO) approach with minor-loop voltage feedback controller presented here overcomes this problem. This approach is created on a theoretical linear model and verified by discrete-model simulation on MATLAB/Simulink. The capability and effectiveness of the SISO approach in compensating start-up current/voltage and in achieving zero steady-state error were tested for transient cases with step-changed load and step-changed reference voltage for linear and non-linear loads. Tests were done to analyze the transient performance against various controller gains. An experiment prototype was also developed for verification.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

“…From the phase voltage definitions of (1)-(3), the average bridge voltage V L(average) simplifies to (4) [15], [21].…”

Section: Mathematical Analysis Of Power Convertermentioning

confidence: 99%

“…4. The control principle is applicable to any AC-DC buck converters, e.g., three-switch 12-diode [13][14][15][16] or bidirectional three-phase [20].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Single-Input Single-Output Approach by using Minor-Loop Voltage Feedback Compensation with Modified SPWM Technique for Three-Phase AC-DC Buck Converter

Alias

Rahim

Hussain³

2013

Journal of Power Electronics

View full text Add to dashboard Cite

show abstract

“…Further improvement in transient response to load changes can be obtained by feed-forward of the load (disturbance) current. Another advantage of the nested control-loop approach with its explicit current demand is that it lends itself to current (and power) sharing between parallel modules [12]. This is illustrated in Figure 7.…”

Section: Island Modementioning

confidence: 99%

Control of inverter-based micro-grids

Green

Prodanović

2007

Electric Power Systems Research

Self Cite

293

195

View full text Add to dashboard Cite

show abstract

DSP-Based Modified SPWM Switching Technique with Two-Degrees-of-Freedom Voltage Control for Three-Phase AC–DC Buck Converter

2014

View full text Add to dashboard Cite

This paper presents a modified sinusoidal pulsewidth modulation (SPWM) switching technique in threephase ac-dc buck converter with new modulation strategy. The modulation strategy used two reference signals (0 • -60 • and 120 • -180 • sine wave) and one type of carrier signal, instead of two types of carrier signal to generate pulse-width modulation signals. A conventional 6-switch three-phase acdc buck converter is extended by comprising four diodes in each switch to achieve bidirectional power flow capability. A digital feedback voltage control using two-degreesof-freedom-control approach is implemented to achieve the output voltage to equal the reference voltage with high dynamic performance and to obtain sinusoidal ac current with unity power factor. The modified SPWM switching strategy of ac-dc power flow and vice versa is discussed and verified via mathematical model. The validity of the proposed three-phase ac-dc buck converter with bidirectional A. Alias

show abstract

Three-phase step-down reversible AC-DC power converter

Cited by 43 publications

References 5 publications

A Single-Input Single-Output Approach by using Minor-Loop Voltage Feedback Compensation with Modified SPWM Technique for Three-Phase AC-DC Buck Converter

A Single-Input Single-Output Approach by using Minor-Loop Voltage Feedback Compensation with Modified SPWM Technique for Three-Phase AC-DC Buck Converter

Control of inverter-based micro-grids

DSP-Based Modified SPWM Switching Technique with Two-Degrees-of-Freedom Voltage Control for Three-Phase AC–DC Buck Converter

Contact Info

Product

Resources

About