By Topic

Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,

7-11 March 1993

Filter Results

Displaying Results 1 - 25 of 129
  • Proceedings of IEEE Applied Power Electronics Conference APEC '93

    Publication Year: 1993
    Request permission for commercial reuse | PDF file iconPDF (508 KB)
    Freely Available from IEEE
  • EMI conducted emission in differential mode emanating from a SCR: phenomena and noise level prediction

    Publication Year: 1993, Page(s):815 - 821
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    An electromagnetic compatibility (EMC) analysis of a power converter is presented. In particular, the phenomena and modeling of conducted noises emission caused by a silicon controlled rectifier (SCR) are described. Theoretical results in the time as well as frequency domain are discussed and compared to the measured time signal and its spectrum.<> View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evolution and status of smart power technology

    Publication Year: 1993, Page(s):18 - 21
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    The progress made in power semiconductor technology that has led to the evolution of smart power integrated circuits is reviewed. The displacement of bipolar power transistors with power MOSFETs and insulated gate bipolar transistors (IGBTs) is a crucial element that has a significant impact on power electronic applications. Trends in technological developments and approaches under investigation t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of fuzzy control method applied to DC-DC converter control

    Publication Year: 1993, Page(s):22 - 28
    Cited by:  Papers (18)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The application of fuzzy control to DC-DC converters operating at finite switching frequency is studied. Several control methods used for buck and boost converters are compared to the fuzzy converter control. Simulation results for several control methods are presented. The simulations show that the fuzzy control method has better dynamic performance and less steady state error View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Total quality management process to achieve excellence

    Publication Year: 1993, Page(s):29 - 34
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The authors report on an industrial total quality management system at AT and T Power Systems, which relies on extensive data and information analysis as an essential element of both the planning and improvement of performance. Information alone does not make quality happen, but allows the setting and communication of tangible goals, and the measurement and tracking of progress. It is a basic tool... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Accurate leakage models of gapped magnetic circuits

    Publication Year: 1993, Page(s):596 - 603
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    A general permeance model valid for any gap arrangement is developed. The main advantage is that a single set of measurements performed for an arbitrary gap configuration completely characterizes the core and allows predictions for any other gap arrangement. A method to predict the leakage permeance of a core from its geometry is suggested View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High density power for low voltage pulsed loads

    Publication Year: 1993, Page(s):37 - 43
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    Several circuit topologies have the characteristic that a capacitor at high voltage is directly transformer coupled to the low voltage output giving a capacitor multiplying effect. The use of these converters for supplying low voltage pulsed loads is investigated. The need for ultralow leakage inductance transformers is shown, and the development of these transformers is described. The effect of p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multi-speed control of single-phase induction motors for blower applications

    Publication Year: 1993, Page(s):153 - 158
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    A simple electronic scheme is studied for multispeed operation of a permanent split capacitor single phase induction motor used to run fractional horsepower blowers and pumps. Computer simulations are used to predict efficiency, harmonic distortion, and pulsating torque when the motor is fed at 60 Hz, 40 Hz or 30 Hz by means of a four-triac bridge circuit. Results of simulations and laboratory tes... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new control strategy for static VAr compensators for minimum harmonic injection

    Publication Year: 1993, Page(s):656 - 661
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A firing strategy for the force-commutated, static volt-ampere reactive (VAr) compensator is proposed. Minimization of harmonic currents injected into the AC system is achieved through numerical optimization of the firing angles. Two control methods are discussed and compared. The method is flexible and useful for fairly low switching frequency (about 15 pulses per half cycle). The resulting AC cu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling and design of transformers and coupled inductors

    Publication Year: 1993, Page(s):589 - 595
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    The modeling and design of transformers and coupled inductors are discussed. After a brief review of Maxwell's laws and magnetic circuit models, the magnetic and electric models of transformers and coupled inductors are developed, including both magnetizing and leakage effects. An integrated structure with both transformer and coupled inductor on the same core is discussed, together with the speci... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single-cycle resonant bidirectional DC/DC power conversion

    Publication Year: 1993, Page(s):44 - 50
    Cited by:  Papers (19)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Two new families of bidirectional DC/DC converters suitable for high frequency high efficiency operation are proposed, based on single-cycle resonant (SCyR) topology. The ZCS/ZVS and ZVS/ZCS-SCyR bidirectional converter families are capable of resonant operation from no-load to full-load, and they have load independent PWM-like characteristics. Experimental results supporting the proposed concept ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Input filter design for PWM current-source rectifiers

    Publication Year: 1993, Page(s):824 - 830
    Cited by:  Papers (14)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Pulse width modulated (PWM) rectifiers allow the elimination of low order harmonics. Filtering requirements for PWM current-source rectifiers are usually satisfied through the use of low-pass LC input filters. The design of LC filters involves the positioning of the resonant frequency to meet the harmonic attenuation requirements (THD), and the introduction of damping at the reso... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic properties of a step-down sinusoidal current AC/DC converter under state-feedback control

    Publication Year: 1993, Page(s):161 - 167
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    A control system is presented for a switching AC/DC converter which complies with electromagnetic compatibility (EMC) standards on conducted emissions and is suitable for applications presently using line-commutated controlled-rectifiers. The properties of the buck converter (which steps-down from 0.866 Vline(peak)) are compared to those of the established boost converter (which steps-u... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The influence of shunt capacitor compensation on the performance of PWM inverter fed induction motor drives

    Publication Year: 1993, Page(s):649 - 655
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    A motor drive system comprising a pulse-width modulation (PWM) voltage source inverter feeding a shunt capacitor compensated induction motor is analyzed to ascertain how shunt capacitor compensation improves motor waveform quality and steady-state characteristics. The motor performances under balanced and two fault conditions (motor phase `a' open and capacitor phase `a' open) are modeled and comp... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Robust control of current-mode controlled converters

    Publication Year: 1993, Page(s):745 - 751
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    A robust controller for multimodule current-mode push-pull power converters is presented. First, the small-signal equivalent circuit and transfer function model of the converter system are found. Then the slope compensation is selected and model reduction is performed using the concept of dominant energy mode. Based on the reduced converter models, a PI (proportional-integral) controller is quanti... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Making your next catalog sparkle: getting the most from a catalog database service

    Publication Year: 1993, Page(s):106 - 110
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    To take advantage of electronic publishing, it is necessary to understand its capabilities and limitations. The flexibility, accuracy and cost of traditional layout and paste-up methods are compared to the newer computerized layout methods, based on actual experience. Techniques of getting the best results are presented, and the author discusses how much personal effort is required. The appropriat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Finite element analysis of power electronic circuits containing nonlinear magnetic components

    Publication Year: 1993, Page(s):584 - 588
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A new finite element technique that allows nonlinear time domain analysis of power electronic circuits containing magnetic components is presented. The new technique is shown to compute the same voltage waveform in a nonlinear RLC circuit as previously published circuit techniques. The new technique is demonstrated for a circuit containing an inductor with a nonlinear B-H View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Eliminating traditional inspection from the electronics manufacturing process

    Publication Year: 1993, Page(s):244 - 248
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    The author describes the transition from traditional, after the fact, workmanship inspection by quality assurance department inspectors to preventive inspection by the operators who assemble the electronics hardware, utilizing a self-directed work team that has been trained and empowered not only to build quality into the product but to inspect, verify, and accept it, utilizing the `buddy system' ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A half bridge, self-oscillating, multi-resonant converter circuit

    Publication Year: 1993, Page(s):77 - 84
    Cited by:  Papers (2)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    A self-oscillating power converter circuit utilizing three reactive elements is described. This converter operates above the resonant frequency to produce zero voltage switching. The reactive elements in the circuit accommodate the parasitics of the transformer to minimize the design constraints on it. Circuitry is included to minimize the frequency variations and improve the regulation without co... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Capacitive-loaded push-pull parallel-resonant converter

    Publication Year: 1993, Page(s):51 - 57
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The results of a theoretical and experimental investigation of a capacitive-loaded push-pull parallel-resonant DC-DC converter (CL-PPRC) are presented and discussed. The converter is driven by a lower than resonance frequency, and the secondary voltage is rectified and smoothed by a capacitive filter. The CL-PPRC is shown to operate in the zero voltage switching (ZVS) mode with a boostlike DC tran... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pulsed EMI protection in electronic power supplies

    Publication Year: 1993, Page(s):898 - 905
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    The author studies the nature of various pulsed electromagnetic interference (EMI) sources, their effects on electronic power supplies, and different types of protection circuitries, as well as the design constraints on these circuitries. The different pulsed EMI sources are described, with special emphasis on lightning. The power failure mechanisms caused by a lightning transient are identified, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Power-factor correction with interleaved boost converters in continuous-inductor-current mode

    Publication Year: 1993, Page(s):168 - 174
    Cited by:  Papers (115)  |  Patents (104)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The operation and design trade-offs of the interleaved boost converter in continuous inductor-current mode in a high-power-factor preregulator circuit are investigated. By using interleaved converters, an overall reduction of boost inductor and electromagnetic interference (EMI) filter volume can be achieved, together with reduced switching losses. The problem of unequal load sharing between the i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new approach to programmed PWM implementation

    Publication Year: 1993, Page(s):793 - 798
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    A new approach is presented that can help in designing a pulse width modulator circuit to implement the precalculated angles technique for application in voltage source inverters (VSIs). With this approach, a circuit is constructed using semicustom erasable/programmable logic devices (EPLDs) and the selected harmonic elimination pulse width modulation (SHE-PWM) technique is implemented. A VSI is f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A novel simulation technique for the analysis of digital asynchronous pulse width modulation

    Publication Year: 1993, Page(s):504 - 509
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    A digital simulation technique based on single Fourier series is used to predict the spectra, including the nonintegral harmonics, generated by digital asynchronous pulse width modulation invertors. The results, with an accuracy of 70 dB, are superior to the results obtained with fast Fourier transform techniques, and offer an alternative to the complex methods based on double Fourier integration ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Small-signal analysis of an energy-recovery buck-derived converter

    Publication Year: 1993, Page(s):639 - 645
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The small-signal analysis of an energy-recovery buck-derived power converter is presented. This converter derives its input voltage from an energy storage reservoir capacitor and returns the stored energy to the respective DC bus. A prototype built to recover energy from a full scale 150 kVA PWM gate-turnoff (GTO) inverter is used to prove the proposed analytical model View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.