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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...
In this paper, a topology of three-phase buck rectifier which is suitable for the low output voltage application and its control principle are proposed to reduce the cost and simplify the control. The proposed topology uses the phase voltage instead of the line voltage to supply power. Thus, it can decrease the rating voltage of switching devices, and save the cost. Moreover, the proposed control...
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...
In this paper, a DC power supply for wide input-voltage range and multi output, which is applied to both 200-V and 400-V power sources, is proposed. This power supply consists of a flying-capacitor three-level PFC and a LLC resonant three-level DC/DC converter. In the PFC, the circuit topology enables to use 600-V devices, minimize the detection circuit and the gate drive circuit, and reduce the size...
The modular multilevel converters (MMCs) are composed of many sub-modules(SMs) connected in series. Module control unit is key components of the SMs, and a auxiliary power supply is needed to energize the module control unit. However, Many MMCs projects require the voltage of IGBT to be higher than 3300V, which means the input voltage of auxiliary power supply used in MMCs should be higher than 2500V...
The article addresses a design procedure of low-power variable gain amplifier employing so-called bulk-driven transistors in 130 nm CMOS technology, working with the power supply voltage of only 600 mV. Mentioned approach represents rather unconventional and still quite uncharted design technique. Therefore, the research potential is tremendous. The paper describes the proposed amplifier along with...
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.
Inductive Power Transfer power supplies for electric vehicles (EV) charging in dynamic applications need to tolerate large variations in coupling and tuning with varying loads. This paper investigates the use of a buck converter to regulate the input voltage to a fixed frequency unidirectional switch push-pull converter to meet the requirements of dynamic charging. The presented circuit is optimised...
A Double integrated buck converter finds application in fields of solid state lighting. buck Converter is widely used for step down dc-dc conversion when there is no isolation requirement. The narrow duty cycle of the buck converter limits its application for high step down applications. The double integrated buck converter overcomes its limitaion. This converter also provides high power factor and...
This paper presents a study of Operational Transconductance Amplifiers (OTAs) for voltage to current conversion circuits. The paper includes a comparative analysis of three OTA architectures implemented in 0.35µm CMOS AMS Technology under ± 1.65V power supply voltage. The impact of the OTA topology has been investigated by simulation. The designed OTAs managed to deliver large current values of 10mA...
In this work, we propose to analyze and implement a two-stage switched-capacitor dc-dc converter design. The proposed converter topology comprises a half-step-down converter, modeled by average state-space approach and associated with the traditional Buck converter to obtain a large-voltage-gain, eliminating the high-frequency transformer, hence reducing its dimensions, making it compact and lightweight...
A modular multi-level converter (MMC) is composed of many sub-modules (SMs). Each SM needs a power supply to drive insulated-gate bipolar transistor (IGBT) and control power. The MMC system has a power of 100MW, a dc link voltage of 250kV, and a total of 125 SMs. This means that each SM has a rated input voltage of 2kV. This high input voltage should be converted to low load voltage by the power supply...
The questions of new generation electrical equipment design for future power supply systems, which may be required on the board of unmanned aerial vehicles, helicopters, training aircraft are discusses in this paper. The topology of DC power supply channel with specialized alternators are proposed. The ways to reduce weight and improve the reliability of the rectifying devices are discusses. The scheme...
In an isolated and rural locations where the energy is derived from renewable sources, the load will suffer from large fluctuations due to the unpredictable nature of the underlying phenomena (wind or solar). This paper presents the implementation of practical control for standalone renewable energy source able to feed an isolated load with regulated voltage and satisfactory energy quality in remote...
In this paper, a high voltage power supply based on an asymmetric multilevel cascaded bridge converter is presented. The required power supply shall be able to reach output voltages up to 30kV with rising and falling times shorter than 10 microseconds. Each module of the converter is supplied by an insulated dual bridge DC/DC converter allowing an independent DC-link voltage control with bidirectional...
This paper will show the specific requirements of high voltage power supplies and their control technology related to small size electrostatic precipitators as they will be used in applications of biomass fired furnaces in the near future. Unlike large ESPs, which are installed in heavy industrial plants (e.g. coal fired power stations or steelworks), the small electrostatic precipitators will mainly...
AC/DC switching power supply is widely used in various types of electronic equipment. In order to reduce the production cost and integrates multi-protection, a design based on off line flyback converter and 0.5µm CMOS process used in this paper. The chip works on constant current state achieved by pulse frequency modulation and constant voltage mode achieved by a unique off-time modulation method...
This paper describes a new resonant converter topology, using a solid-state asymmetric bridge to increase the energy efficiency of the solid-state switching circuit being designed to replace the actual pulse transformer and thyratron based resonant modulator that supplies the 60 kV target potential for the ion acceleration of the On-Line Isotope Mass Separator ISOLDE accelerator. The preliminary results...
A voltage regulator is introduced that exhibits large signal (25 dBm) power supply rejection (PSR) up to 1GHz to comply with current electromagnetic compatibility (EMC) standards [1]. Negative peak cut-off using a rectifying diode is demonstrated so that line disturbances of several volts can be tolerated while still maintaining positive drop-out voltage. In order to avoid electromagnetic interference...
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