Journal ArticleDOI
Optimum Snubbers for Power Semiconductors
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TLDR
In this paper, it is shown that there is an optimum damping resistance which minimizes the peak voltage, but a lower resistance is required to minimize the average dv/dt to the peak.Abstract:
It is generally necessary to connect an RC snubber across a power rectifier or thyristor to absorb the energy associated with the recovery current of the device and limit the resulting voltage spike and rate of rise dv/dt. For a given snubber capacitance, it is shown that there is an optimum damping resistance which minimizes the peak voltage, but a lower resistance is required to minimize the average dv/dt to the peak. Design procedures are derived for selecting the capacitance and optimum resistance to limit the peak voltage or dv/dt to specified values. The device recovery current is trapped in circuit inductance, and its energy must be dissipated, while the snubber produces additional losses as the price of performing its limiting function.read more
Citations
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Journal ArticleDOI
Selection of Snubbers and Clamps to Optimize the Design of Transistor Switching Converters
TL;DR: In this paper, a flyback converter used as a battery charger is analyzed and applied to optimize the design of the snubber and clamp arrangement in a power transistor switching circuit.
Journal ArticleDOI
A Series-Tuned Inductive-Power-Transfer Pickup With a Controllable AC-Voltage Output
TL;DR: In this paper, a series ac-processing pickup is proposed to produce a controllable ac voltage source suitable for driving incandescent lights, which can be cascaded onto a rectifier to produce precisely controlled dc voltage.
Journal ArticleDOI
The Cascade Connection of Switching Regulators
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TL;DR: In this article, a cascade connection of switching regulators is introduced which is useful for lowvoltage power supplies, and a new method is proposed for isolating the supply and the load circuit.
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Proceedings ArticleDOI
An overview of low-loss snubber technology for transistor converters
TL;DR: A review of the state-of-the-art for low-loss snubber technology can be found in this article, where the purpose and philosophy in the use of snubbers and ambiguities of their benefits are discussed.
References
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Journal ArticleDOI
Nonlinear reactors as protective elements for thyristor circuits
TL;DR: It is shown that the use of a nonlinear reactor in series with the thyristor provides advantages in some surge suppression networks, and a design technique is presented for these reactors.
Journal ArticleDOI
Commutation dv/dt Effects in Thyristor Three-Phase Bridge Converters
John B. Rice,Lawrence E. Nickels +1 more
TL;DR: In this article, the authors analyzed a three-phase bridge circuit and showed the following: dv/dt faults due to turn-on transients are a threat only for operation in the inverter mode.
Journal ArticleDOI
Commutation Behavior of Diffused High-Current Rectifier Diodes
TL;DR: In this article, the authors present a practical manner in which the commutation characteristics of a rectifier diode may be presented and give quantitative recovery data for two popular types of diffused 250-ampere rectifier diodes in terms of circuit parameters.
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