Service Entrance Multiple-Function Power Converter for Quality Power Supply to Critical and Sensitive Loads

2006 ◽  
Author(s):  
Frank Chen ◽  
Lin Wang ◽  
Richard Cheung ◽  
Farhad Nabhani
Keyword(s):  
Power Supply ◽  
Power Converter ◽  
Multiple Function

Fault Tolerant Systems

2016 ◽  
pp. 408-434
Keyword(s):  
Fault Tolerance ◽  
Power Supply ◽  
Fault Tolerant ◽  
Power Converter ◽  
Functional Requirements ◽  
Functional Capabilities ◽  
Fault Tolerant Systems ◽  
Free Environment ◽  
Supply Systems ◽  
Redundant Systems

Another alternative derating, which was described in the previous chapter, is application of fault tolerant structures for the power converter. Fault tolerance is the property that enables a system to continue operating properly in the event of a failure of (or one or more faults within) some of its components. Fault tolerant systems are systems that can be operating after fault occurrence with no degraded performance in their basic functional requirements. This is the main difference between fault tolerant systems and derated systems. In this chapter, some methods for fault tolerance in electric power converters are presented. Fault tolerance is almost the only method for achieving a desired reliability in a converter that operates with non-zero fault possibility. There are two main approaches for this aim: re-configuration of the faulty system and using redundant systems. Redundancy is the provision of functional capabilities that would be unnecessary in a fault-free environment. Various types of redundant systems as passive and active redundancy are described and their application in power supply systems is presented. A new approach for a reliable and fault tolerant power supply is proposed and justified with experimental results. The concept of fault tolerance in electrical machines is presented.

The Study of Isolated Multi-Input Converter for Green Energy Application

2013 ◽  
Vol 805-806 ◽  
pp. 1515-1518
Author(s):  
Yu Lin Juan ◽  
Yi Lin He ◽  
Chun Ming Chen ◽  
Tsair Rong Chen
Keyword(s):  
Power Supply ◽  
Operation Mode ◽  
Energy Generation ◽  
Power Converter ◽  
Green Energy ◽  
Generation System ◽  
Energy Supplement ◽  
Operational Principle ◽  
Energy Application ◽  
Dc Bus

To increase the development and popularization of the Green Energy Generation System (GEGS), this paper aims to develop a multi-input isolated power converter, which could be coordinated on a green-energy-based DC bus. The proposed converter is integrated with commercial grid and batteries, to achieve the grid energy supplement and battery-based emergency backup power supply, respectively. The operational principle of proposed converter is presented, there are three operation mode and its simulation result are illustrated as well.

Research of Digital Measurement and Control Technology for the Inverter of Power Supply

2011 ◽  
Vol 271-273 ◽  
pp. 797-801
Author(s):  
Huan Qi Tao ◽  
Yu Chuan Wu
Keyword(s):  
Power Supply ◽  
Power Converter ◽  
Present Condition ◽  
Practical Significance ◽  
Digital Measurement ◽  
Engineering Discipline ◽  
Inverter Power Supply ◽  
And Control ◽  
Measurement And Control ◽  
Basic Content

In this paper, basic content and development of power presented; and the present condition of inverter power supply is discussed; then practical significance and developmental prospect to the technology based on digitalization about power converter are described in detail; and new direction of study is explored for the development about electrical engineering discipline and application of the technology about solar energy.

Development of High Voltage High Frequency Resonant Inverter Power Supply for Atmospheric Surface Glow Barrier Discharges

2005 ◽  
Vol 107 ◽  
pp. 81-86 ◽  
Author(s):  
M. Nisoa ◽  
D. Srinoum ◽  
P. Kerdthongmee
Keyword(s):  
High Voltage ◽  
Power Supply ◽  
High Frequency ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Power Converter ◽  
Maximum Output ◽  
Resonant Inverter ◽  
Resonant Inductor ◽  
Barrier Discharges

High-voltage high-frequency power supply using voltage-fed load resonant inverter with a series-compensated resonant inductor has been developed for efficient atmospheric surface glow barrier discharges(ASGBD). It produces a controllable frequency and sinusoidal alternating voltage output. The maximum output voltage is about 6 kV peak to peak. Resonant power converter can be tune easily to the resonant frequency of the load. Operating frequency varies according to the load and voltage level typically in the range of 10 kHz and 1 MHz range. The output voltage is controlled by using pulse width modulation technique. The power supply developed in this paper is applied successfully for ozoniser that can produce high concentrate ozone by using ASGBD for agricultural industry applications.

Design of Dimmable LED Lighting for DC Storage Power Supply

2013 ◽  
Vol 311 ◽  
pp. 238-242
Author(s):  
Yong Nong Chang ◽  
Hung Liang Cheng ◽  
Chih Ming Kuo
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Power Converter ◽  
Operating Efficiency ◽  
Resonant Converter ◽  
Led Lighting ◽  
Zero Current Switching ◽  
Zero Current ◽  
Circuit Structure ◽  
Driving Circuit

In this paper, a dimmable LED lighting driving circuit with high efficiency for DC storage power supply is proposed. In this research, Class-E resonant converter is principal circuit structure and possesses superior efficiency in the power converter. LED lighting set accompanied with multiple transformers in cascade are employed, which can improve current uniform problem and increase operating reliability. Furthermore, integral cycle switching technique will be utilized to implement the dimmer design, integral cycle switching control dimmer possesses the advantage of zero-current-switching (ZCS) and can effectively promote the operating efficiency

The Research on Switch-Linear Hybrid of Precise Current Source

2013 ◽  
Vol 416-417 ◽  
pp. 559-564
Author(s):  
Li Yi Li ◽  
Qi Ming Chen ◽  
Jia Xi Liu ◽  
He Zhu ◽  
Guang Jun Tan
Keyword(s):  
Power Amplifier ◽  
Power Supply ◽  
High Efficiency ◽  
Current Source ◽  
Power Converter ◽  
Current Control ◽  
Current Loop ◽  
Special Power ◽  
Switch Power ◽  
Linear Power Amplifier

In this paper, a novel current control strategy of precise current source is presented, which combines switch power conversion mode with linear amplification mode. The linear power amplifier is used as the power converter in the current loop. The current controller is a double cascaded PI (DCPI) controller which is put up by the way of analog circuit, it can suppress the high frequency disturbance signal effectively. The switch-filter circuit can generate a special power supply for linear power amplifier, the voltage of this special power supply changes as the load voltage does. The topology of four-level H-Bridge works as the power converter of the switch power amplifier, the LC filter circuit can eliminate the current ripple caused by the PWM chopper.The simulation and experimental results verify that the Switch-Linear Hybrid (SLH) scheme is of high efficiency and output quality. The bandwidth of the precise current source is 5.4 kHz and the phase margin is 42 degree.

scholarly journals Dynamic loading of electric machines during testing

2018 ◽  
Vol 7 (2.23) ◽  
pp. 184 ◽  
Author(s):  
Sergey I. Malafeev ◽  
Sergey S. Malafeev
Keyword(s):  
Power Supply ◽  
Energy Efficient ◽  
Electric Energy ◽  
Electrical Energy ◽  
Power Converter ◽  
Electric Machines ◽  
Electric Machine ◽  
Dynamic Mode ◽  
Electrical Machine ◽  
Simple Method

An energy-efficient and simple method of testing electric motors in a dynamic mode is considered. When testing an electrical machine, the rotor is driven into a reciprocating rotary motion. The source of power of the power converter, which controls the electric machine, is a supercapacitor. When the electric machine is accelerated, electric energy is consumed from the supercapacitor, when the machine brakes the kinetic energy of the moving masses is converted into electrical energy, which accumulates in the supercapacitor. The energy loss during the operation of the electromechanical system in the dynamic mode is compensated by recharging the supercapacitor using a controlled rectifier connected to the power supply network.

Power Converter Design for Electric Vehicle Applications

2013 ◽  
Vol 67 (3) ◽  
Author(s):  
Aree Wangsupphaphol ◽  
N. R. N. Idris ◽  
A. Jusoh ◽  
N. D. Muhamad
Keyword(s):  
Electric Vehicle ◽  
Power Supply ◽  
Power Supply System ◽  
Controller Design ◽  
Fast Response ◽  
Power Converter ◽  
Supply System ◽  
Matlab Simulation ◽  
Converter Topology ◽  
Bus Voltage

This paper presents the design of a power converter for electric vehicle (EV) applications energized by Li-ion battery (LiB) and supercapacitor (SC). The combination of these energy sources is a good solution for better performances of the EV. A single non-isolated bi-directional converter is proposed in order to get the lowest loss, weight and cost of total electric vehicle applications perspective. The battery voltage represents bus voltage of the power supply system connecting to the load. To control the dynamic of converter, state space averaging technique and power equation linearization are employed to get the transfer function for designing the PI controllers. In order to get the fast response of SC power energizing, the cascade controller is implemented to control current and SC voltage. MATLAB simulation is successfully verified the proposed power converter topology, configuration and controller design for EV. The result shows the capability to settling supply a significant amount of power for step load change within few milliseconds. Sudden load power demand can be drawn from SC. This can reduce the stress of battery as in case of the pure battery power supply system. 

Sign in / Sign up

Export Citation Format

Share Document