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In recent years, energy-saving measures in the household electrical appliances is progressing. Further, with the development of power electronics field, digital household electrical appliances that operate at DC power source is beginning to increase. In this paper, basic system action testing of a system was put into effect. An air-conditioning equipment was used for system action testing. As a result,...
A helical-type fusion facility uses a large-scale superconducting DC magnet. To maintain the coil current of this magnet during steady-state operation, a large output current supplied by a very-low-voltage power supply is necessary. For this purpose, a DC power supply using a mechanical contact as a switching device was designed, and a small model of the contact was tested.
The papers presents implementation of a 600 kW DC power converter resistant to electrical network perturbations on an 18 kV electrical network feeding the input of the power converter. The manuscript describes experimental assessment of converter output performance during both nominal electrical network conditions and transient grid voltage dips.
This paper presents a highly configurable DC/DC power supply fed by the popular USB port. It features buck and boost behavior with variable output voltage together with high efficiency by usage of the ZETA-topology. Furthermore smart power supply functions are implemented to control and monitor output values with a graphical user interface.
In this paper, we propose a concept of Field Programmable Power supply Array (FPPA), which is a fully digital controlled power supply, based on power supply on chip technology. The FPPA realize multi input voltage and multi output voltage only rewrite digital code of FPGA or DSP.
A high-precision digital control DC power supply based on singlechip STC89C52, A/D converter AD7705, D/A converter DAC7512 and three terminal adjustable regulator LM317 is designed and realized, which uses MCU as the center, and adopts 12 DAC DA7512 to realize digital control and 16 ADC AD7705 and LCD to the measurement and display of output voltage. The voltage adjustment range of this system is...
FERMI@Elettra is the new “4th-generation” light source, starting its operations at the Elettra Synchrotron Light Laboratory in Trieste, Italy. About 400 magnet power supplies (PS) ranging from 5 A to 750 A are used. All PS are remotely controlled via Ethernet. This paper describes the PS for the “Diagnostic Beam Dump” and the “Main Beam Dump” dipoles and the high performance achieved.
The main advantage of asymmetrical multilevel inverters is the optimization of levels with a minimum number of power supplies. However, this optimized multilevel system still needs a large number of isolated and floating DC supplies, which makes these converters complicated to implement in electric vehicles (EVs), because the system will require many independent battery packs. In this paper, a very...
This paper presents a design method of DC source based on AT89S52, the reference voltage of LM336 is divided into 256 by DAC0832, the regulation of output voltage is achieved by changing the input of DAC0832, and the output voltage is magnified by the amplifying circuitry and LM317. For the stabilization, ADC0809 output is fed back to the AT89S52.
This paper proposes a novel control method for an interface converter that is using an indirect matrix converter (IMC) with a DC power supply. The proposed converter is constructed based on an indirect matrix converter and a converter that combined the function of a boost type converter and a step-down type converter. The proposed converter connects an active snubber to the DC link part of IMC along...
Design of DC power supply using half bridge LCC series-parallel resonant converter is proposed in this paper. The DC power supply input voltage is DC 24 V and output voltage is DC 3.3 V. The voltage regulation using variable frequency control is investigated for 3.3 V under different load condition. The performance of the system is first simulated by IsSpice. A 16-bit digital signal processor (DSP...
Reliability, low cost and low power are key issues in automobile electronics. A Micro Controller Unit (MCU) applied in Tire Pressure Monitoring System (TPMS) is designed and taped out, and it is mainly composed of a special Low Dropout Voltage Linear Buck Regulator (LDO), A/D controller and DW8051. In this paper, the LDO design has been achieved to meet the power supply big variation of automobile,...
This paper presents a DSP based equipment aimed for power electronics and motor control applications that, in opposite with conventional training equipments, provides a great flexibility to design several applications. The equipment is a modular system with a DC power supply, three-phase MOS-bridge, a signal acquisition system, a DSP development kit and several loads, i.e. DC or AC motors and passive...
In this paper, a DC power supply based on dual-bridge matrix converter (DBMC) with reduced number of switches is proposed. Compared to other DC power supplies which using the conventional matrix converter, the proposed topology possesses high quality input current and output voltage, adjustable input power factor, and no large energy storage component. Moreover, it has more advantages than other proposed...
High Power telecommunication power supply systems consist of a three-phase switch mode rectifier followed by a DC/DC converter to supply loads at 48 VDC. These rectifiers draw significant harmonic currents from the utility, resulting in poor input power factor with high total harmonic distortion (THD). In this paper, a DC power supply based on matrix converter with reduced number of switches is proposed...
Design an electrical locomotive 110 V D.C. source with PFC based on the structure of two-stage switching converter. Discuss the design scheme of main circuit and control circuit. Expound the calculation method of the key parameters. The experiments indicate that the device gets good performance on output and reliability. The electric source is appropriate for electrical locomotive and the other similar...
The five-level PWM inverter has many advantages such as ability to operate the AC motors or the power compensator with very large capacity in nearly sinusoidal current waveforms. For these reasons, these applications have just begun to study. However, this circuit must provide four DC power supplies for supplying the active power. In this paper, we propose a novel double power supply method, in which...
In many applications of DC-DC converters, loads cannot be specified in advance, i.e., their amplitudes are suddenly changed from the zero to the maximum rating. Generally, design conditions are changed for each load and then each controller is re-designed. Then, a so-called robust DC-DC converter which can cover such extensive load changes and also input voltage changes with one controller is needed...
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