scholarly journals Application of the Lyapunov Algorithm to Optimize the Control Strategy of Low-Voltage and High-Current Synchronous DC Generator Systems

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 871 ◽  
Author(s):  
Jinfeng Liu ◽  
Xiaohai Tan ◽  
Xudong Wang ◽  
Herbert Ho-Ching IU
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
Definite Function ◽  
High Current ◽  
Generation System ◽  
Control Variables ◽  
Loop Control ◽  
Decoupling Method ◽  
Negative Definite Function ◽  
Current Sharing

In the present study, a novel multiple three-phase low-voltage and high-current permanent magnet synchronous generation system is proposed, which has only half-turn coils per phase. The proposed system is composed of a generator and two confluence plates with 108 rectifier modules. The output can reach up to 10,000 A continuous DC power supply, which is suitable for the outdoors and non-commercial power supply. The application of the Lyapunov algorithm in the synchronous rectification control was optimized. A current sharing loop control was added to the closed-loop control to ensure a stable output voltage and the output current sharing of each rectifier module. Since the two control variables solved by the Lyapunov algorithm were coupled and the negative definite function of the Lyapunov algorithm could not be guaranteed in this system, a simple decoupling method was used to decouple the control variables. Compared to the conventional control, the proposed strategy highly improved the dynamic performance of the system. The effectiveness of the proposed strategy was verified by the simulation. The 5 V/10,000 A hardware experiment platform was built, which proved the feasibility and validity of the proposed strategy for a high-power generation system.

scholarly journals Synchronous Generator Rectification System Based on Double Closed-Loop Control of Backstepping and Sliding Mode Variable Structure

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1832
Author(s):  
Jinfeng Liu ◽  
Xin Qu ◽  
Herbert Ho-Ching Iu
Keyword(s):  
Closed Loop ◽  
Control Structure ◽  
Low Voltage ◽  
Sliding Mode ◽  
Variable Structure ◽  
Synchronous Generator ◽  
Closed Loop Control ◽  
High Current ◽  
Loop Control ◽  
Sliding Mode Variable Structure

Low-voltage and high-current direct current (DC) power supplies are essential for aerospace and shipping. However, its robustness and dynamic response need to be optimized further on some special occasions. In this paper, a novel rectification system platform is built with the low-voltage and high-current permanent magnet synchronous generator (PMSG), in which the DC voltage double closed-loop control system is constructed with the backstepping control method and the sliding mode variable structure (SMVS). In the active component control structure of this system, reasonable virtual control variables are set to obtain the overall structural control variable which satisfied the stability requirements of Lyapunov stability theory. Thus, the fast-tracking and the global adjustment of the system are realized and the robustness is improved. Since the reactive component control structure is simple and no subsystem has to be constructed, the SMVS is used to stabilize the system power factor. By building a simulation model and experimental platform of the 5 V/300 A rectification module based on the PMSG, it is verified that the power factor of the system can reach about 98.5%. When the load mutation occurs, the DC output achieves stability again within 0.02 s, and the system fluctuation rate does not exceed 2%.

A programmable high current/low voltage power supply

1984 ◽  
Vol 17 (8) ◽  
pp. 647-649 ◽  
Author(s):  
M E Thomas ◽  
A Louw
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
High Current

Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply

2013 ◽  
Vol 339 ◽  
pp. 614-620
Author(s):  
Fei Yu
Keyword(s):  
High Power ◽  
Power Supply ◽  
Control Method ◽  
Current Loop ◽  
Complex Environments ◽  
Loop Control ◽  
Transmitter Power ◽  
Current Sharing ◽  
Current Sharing Control ◽  
Electromagnetic Transmitter

High-power electromagnetic transmitter power supply is an important part of deep geophysical exploration equipment, especially in complex environments, where how to control the high accuracy and stable output of the power supply as well as the redundancy safety of the system become the key issue in its designing. A triple-loop control including inner current loop, outer voltage loop and load current forward feedback and a digitalized voltage/current sharing control method are proposed for the realization of the rapid, stable and highly accurate output of the system. System simulation and field geological exploration experiments demonstrate the effectiveness of the control method which could ensure both the systems excellent stability and the outputs accuracy.

Development of a Power Supply for the Food Processing Device, Using High Pressure due to Evaporation of Aluminum Wire by Discharging High Current

2013 ◽  
Vol 767 ◽  
pp. 244-249 ◽  
Author(s):  
Soichiro Hanashiro ◽  
Katsuya Higa ◽  
Takumi Matsui ◽  
Ryo Matsubara ◽  
Osamu Higa ◽  
...  
Keyword(s):  
Shock Wave ◽  
High Pressure ◽  
Power Supply ◽  
Food Processing ◽  
Low Voltage ◽  
High Current ◽  
Aluminum Wire ◽  
Instantaneous Discharge ◽  
Current Flows ◽  
Processing Device

We have developed the food processing device which uses underwater shock waves generated by gap discharging and electrical sparking. This method is dangerous due to the fact that it requires a very high voltage. Thus, we have focused on evaporation of aluminum wires occurred by the instantaneous high current and low voltage from a charged capacitor. When instantaneous high current flows through the aluminum wire is anchored between electrodes, a shock wave is generated by the evaporation of the aluminum wire. In this research, we have developed a power supply module for the food processing device using high pressure of shock wave due to evaporation of aluminum wire by instantaneous discharge of high current. In the present stage, the evaporation of aluminum wire can generate 70% of pressure compared to the gap discharge, and as for the electric power, it reached 22.5% of the gap discharge. It has been understood that the number of the aluminum wires are important to obtain a high pressure, when the charged capacitor discharged the charge. We found that evaporation of aluminum wire can generate high pressure with low voltage, which is more effective than the gap discharging in terms of safety.

scholarly journals Manufacture of High Current Low Voltage Power Supply with Using the Mot (Microwave Oven Transformer)

2020 ◽  
pp. 301-306
Author(s):  
Arman Hidayat Sirait ◽  
Kerista Tarigan ◽  
Marhaposan Situmorang
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
Electrical Equipment ◽  
Microwave Oven ◽  
High Current ◽  
New Methods ◽  
Iron Smelting ◽  
Parallel Circuit ◽  
Secondary Winding

The manufacture of low voltage high current power supply using the MOT (Microwave Oven transformer) has been done. The purpose of this work is to convert low voltages into high currents by utilizing simple electrical equipment. This work use of varying voltages and different windings which are changed on the secondary winding section with a cable size of 240 mm 2, NYA cable type. The test is carried out with a series circuit, parallel circuit, and single circuit by utilizing a voltage of 30 V, 60 V, 90 V, 120 V and 5 different variations of winding. The results of this test provide knowledge of new methods that can be applied to iron smelting.

Hybrid Integration of a Low-Voltage, High-Current Power Supply Buck Converter With an LTCC Substrate Inductor

2010 ◽  
Vol 25 (9) ◽  
pp. 2287-2298 ◽  
Author(s):  
Michele Hui Fern Lim ◽  
Jacobus Daniel van Wyk ◽  
Fred C. Lee
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
Buck Converter ◽  
High Current ◽  
Hybrid Integration ◽  
Ltcc Substrate

scholarly journals Low Voltage High Current Output Switching Power Supply Using a New Type Transformer.

1995 ◽  
Vol 115 (8) ◽  
pp. 1068-1069
Author(s):  
Hideo Sekimoto ◽  
Yasuhiro Nakashima
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
High Current ◽  
Switching Power Supply ◽  
Current Output ◽  
Switching Power ◽  
New Type
Sign in / Sign up

Export Citation Format

Share Document