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The MPSS (multiport power supply system) is consist of fuel cell, super capacitor and two DC/DC converters. The energy management scheme, along with the allocation principle of energy storage unit is analyzed. The paper establishes the mathematical model and proposes a composite control strategy. The strategy fuses subsection PI (Proportional and Integral) control and SMC (Sliding Mode Control) based...
Compared with the conventional high voltage DC power supply, the high voltage pulse power supply can significantly improve the dust removal efficiency of electrostatic precipitator and reduce the energy consumption. This paper presents a new type of high voltage pulse electrostatic precipitator power supply topology, the symmetric cascaded structure of the low voltage side which can significantly...
In this paper, a novel three-phase rectifier based on triple line-voltage cascaded VIENNA converters has been proposed. A comprehensive analysis to the proposed converter is presented. Compared to conventional three-phase cascaded H-bridge converters, in the proposed new multilevel converters, the switch voltage stress is reduced, and fewer switches and dc capacitors are required under the similar...
This paper is focused on the performance and limits of the boost rectifiers with unity power factor, in terms of the total harmonic distortion factor of the current drawn from the power supply. Different values of the prescribed output voltage are taken into consideration. The direct current control based on the output of voltage controller is proposed. The case study of a battery charging station,...
This paper presents a new power supply consisting of an inverter and a power factor correcting stage with an integrated active energy storage for servo drives. The energy storage is realized with a capacitor and a DC-DC-converter. This enables the power supply to reuse the braking energy of servo drives instead of losing it in a braking chopper resistor. The main advantage is the simple integration...
The paper proposes a power supply unit to efficiently supply always-on or duty-cycled IoT loads which consumes in μW-range. This PS achieves the highest 93% and 99% current efficiencies at average output currents of 1μA and 100μA to date, respectively. This unit includes a voltage reference and oscillator to generate autonomously duty-cycled power delivery operation as low as a 30μ8 on-period. The...
In order to simulate the varied kinds of current and meet the acquirement on the different power, this paper proposes a multifunctional DC electronic load. The proposed DC electronic load is composed of many cascaded current simulation units. The number of units is according to the input power rating. Each unit is based on the combination of buck and boost converter, which is able to simulate both...
Supercapacitor-based DC-DC converters can be built with end-to-end efficiencies of more than 80% and have eliminated EMI/RFI issues with operating frequencies ranging from tens of hertz down to a few millihertz. Multistage topologies can improve temporary energy storage capability by buffering against short-term failures of the power supply. This paper presents an analysis of a supercapacitor-based...
This paper presents an output-capacitorless low-dropout (LDO) regulator with with −132dB power supply rejection ratio (PSRR) at 1KHz. By using a Rising-Class-A voltage buffer, the non-dominant parasitic poles can be pushed to higher frequencies and leads to good stability in power supply rejection ratio (PSRR) performance. The proposed circuit is designed with 0.18-µm CMOS process technology. The...
The high voltage constant current charging power supply with high charging efficiency and good stability is developed. The power supply has the advantages of small volume, low cost, etc. Design index is that the charging constant current is 0.34A, the charging voltage is 60kV, the power is 20kW. Simulation analysis of the original system using Pspice simulation software, in the light of the average...
This paper describes design and development of Pulsed Power DC-DC converter called Pulsed Power Supply Unit for Transmit/Receive Integrated Module of L-band SAR. This paper presents topology selection, design challenges and use of bias winding for feedback. Novel feature of this design is that by using bias winding for feedback overall efficiency is improved and excellent regulation of Tx outputs,...
The design of the LLC resonant converter is presented for use in electrical discharge machine (EDM) applications. This converter is designed to operate with a dc input voltage and will output controlled dc voltages during both the striking and arc conditions of the EDM process. The method employed magnitude and frequency control to enable the converter to operate at zero voltage and zero current transitions...
Nowadays distributed generation systems such as photovoltaic power generation systems and wind power generation systems have been on the increase. The increase of distributed generation systems causes the reverse power flow and the voltage rise in power distribution systems. By the way, the leading currents by the installed compensation capacitors cause the voltage rise and increase of the power loss...
Main principle of piezoelectric ceramic actuator is inverse piezoelectric effect. Piezoelectric ceramic actuator has a wide range of applications in precision engineering fields such as the ultra-precision positioning systems, microelectronics technology and space technology. So Piezoelectric ceramic driving circuit has high requirements on efficiency, power, output voltage rating and linearity. But...
A low power flipped voltage follower (FVF) based output capacitor-less low-dropout (LDO) regulator, designed for the low power radio frequency identification (RFID) chips, has been proposed and simulated by using a standard 0.18 µm CMOS process in this paper. Utilizing the FVF structure and dynamic bias current technique, proposed LDO is able to achieve a fast transient response and the power supply...
This paper presents a 0.65-V flipped voltage follower (FVF)-based regulator with an embedded sub-1-V voltage reference. A low-pass filter is employed in the current coupling path to reduce the bias noise and improve the power supply rejection (PSR) at a low-frequency band (<kHz). The chip is fabricated in a 0.18-μm CMOS process and occupies an active area of 0.076 mm2. The proposed FVF regulator...
This paper discusses examples of application of the Dynamic Line/Load (DLL) emulation technique based on the injection of an external signal into the feedback loop of a dc-dc regulator, introduced and discussed in the companion paper Part I. Load transient and line transient tests on linear regulators have been realized by means of the Texas Instruments PMLK-LDO board, which allows an easy implementation...
These days electrolyzers are becoming more and more interesting due to the high demand for energy storage in form of hydrogen for renewable power generation using fuel cells. The design of a power supply for such a system is complex especially when the DC-link capacitance is reduced. By substituting the complex switching model of the power supply with a simplified one, the system dynamics can be better...
The design of a low power low drop out voltage regulator with no off-chip capacitor and fast transient responses is presented in this paper. The LDO regulator uses a combination of a low power operational trans-conductance amplifier and comparators to drive the gate of the PMOS pass element. The amplifier ensures stability and accurate setting of the output voltage in addition to power supply rejection...
Estimation of jitter in early design cycle of an SoC is necessary to avoid jitter budget conflicts in the design. In this paper, an analysis of power supply induced jitter in a commonly used voltage mode driver architecture in serial links is discussed. The circuit used for the analysis is designed in 28nm FD-SOI technology but the analysis is technology independent. Jitter induced by noise in power...
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