Switching Losses Analysis of a Constructed Solar DC-DC Static Boost Converter

Merrassi, Weam El; Abounada, Abdelouahed; Ramzi, Mohamed

doi:10.15598/aeee.v18i3.3699

Cited by 5 publications

(3 citation statements)

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“…In soft switching, F I G U R E 1 Average current tracking from the inductor ripple current the reduction in losses is obtained with a passive snubber. 23 However, the proposed work only employs hard switching with a digital controller (peak and valley point sampling techniques), which executes the performance rather than the losses indicated in our results. As a result, the work presented in this paper would be helpful for the selection of control variable sampling positions based on the type of carrier signal, controller, and converter topology.…”

Section: Introductionmentioning

confidence: 83%

“…In consideration of DC‐DC converters, there are two control techniques for making the switches perform: hard switching and soft switching. In soft switching, the reduction in losses is obtained with a passive snubber 23 . However, the proposed work only employs hard switching with a digital controller (peak and valley point sampling techniques), which executes the performance rather than the losses indicated in our results.…”

Section: Introductionmentioning

confidence: 96%

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Improved dynamic performance with discrete sampling in digital ACM controlled DC‐DC boost converter with capacitor ESR inclusion

Balapanuru

Lokhande

Aware

2022

Circuit Theory & Apps

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A classical symmetrical carrier-based digital Average Current Mode (ACM) control has two sampling choices, peak point and valley point, to control the average inductor current. If it is employed to regulate the DC-DC boost converter, there will be a difference in the dynamic performance at peak and valley point sampling instants because of discontinuous output voltage ripple due to Equivalent Series Resistance (ESR) of the output capacitor. Therefore, this paper investigates the effect of sampling instant on the dynamic performance of the PWM DC-DC boost converter in consideration of capacitor ESR. The small-signal transfer functions of a boost converter for both sampling positions are prominent to analyze each sampling impact on its dynamics. They are derived by using discrete-time modeling. Further, the choices of sampling instant are investigated related to the RHP zero elimination, voltage stability, and peak-to-peak ripple current of the DC-DC boost converter. The boost converter has improved stability performance by synchronizing the ADC sampling at starting position (valley point) of the symmetrical carrier signal, as evident by the analytical and hardware results of both sampling techniques working from 25% to 100% load working conditions.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 96%

Improved dynamic performance with discrete sampling in digital ACM controlled DC‐DC boost converter with capacitor ESR inclusion

Balapanuru

Lokhande

Aware

2022

Circuit Theory & Apps

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“…Compared with DC motor, AC motor structure is relatively simple and low cost; operation and maintenance are relatively easy and have the advantages of the strong and durable; and synchronous motor also has the advantage of power factor that can be adjusted, so they are widely used in the early period, and most of them have poor speed control ability [1][2][3]. With the development of modern power electronic technology, as well as the constant maturity of ac speed regulation theory, AC drive system has become the mainstream of the entire electric drive system, widely used in various applications, especially in the field of high-power drive has played an increasingly important role [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

Cai

Sun

2022

Mathematical Problems in Engineering

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Electrically excited synchronous motor (EESM) is widely used in many large equipment drives because of its strong overload capacity, high efficiency, and adjustable power factor. The research and development of a high-performance EESM control system can realize the high combination of energy-saving speed regulation and green environmental protection and has a high social effect and economic value. In this paper, the signal injection method is used to obtain the initial rotor position information of EESM. Sliding Fourier transform is used to improve the initial position angle detection method based on the rotor signal injection method, and the improved method is compared with the traditional voltage integration method. Rotor high-frequency signal injection method was used to detect the rotor position information of the motor during operation, and the influence of the damping winding on the rotor signal injection method was analyzed. On the premise that the damping winding had no influence on the method, a method of obtaining the rotor position information of EESM without a speed sensor was designed. Finally, the speed sensorless regulation system using the initial rotor position detection method is simulated, which verifies the accuracy of the proposed speed sensorless control scheme.

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