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Active AC snubber for direct AC/AC power converters
2011 IEEE Energy Conversion Congress and Exposition, 2011While direct AC/AC converters like matrix converters have been around for a while, their applications are generally limited to low voltages due to complexity and issues in scaling to high voltages, including inadequate fault tolerance, complex switching patterns where errors can lead to device failures, and complex gate drive requirements for voltage ...
Anish Prasai, Deepak Divan
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Observer based power feedforward control for AC/AC converters
Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242), 2002In this paper a disturbance observer based power feedforward is proposed as a new alternative control solution of the input AC/DC stage of a quasi direct AC/AC converter. The observer identifies the DC link current drawn by the output inverter section. The observed load current is then used to constitute the DC link power based feedforward signal added
PROFUMO, Francesco, UHRIN R., ZBORAY L.
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1976 IEEE Power Electronics Specialists Conference, 1976
The advent of readily available high power static switching devices has resulted in an almost infinite number of techniques for the control, inversion, and conditioning of A C power. The six papers presented in this session represent a good cross section of the power electronic technologies utilized for the A C power conditioning in a wide range of ...
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The advent of readily available high power static switching devices has resulted in an almost infinite number of techniques for the control, inversion, and conditioning of A C power. The six papers presented in this session represent a good cross section of the power electronic technologies utilized for the A C power conditioning in a wide range of ...
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A Single-Stage Capacitive AC-Link AC–AC Power Converter
IEEE Transactions on Power Electronics, 2019A single-stage three-phase ac–ac converter benefiting from a high-frequency alternating link voltage is proposed in this paper. In this converter, a very small film capacitor can transfer the energy from the input to the output, owing to the high-frequency alternating voltage of the link.
Ehsan Afshari +2 more
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2018
AC generator, transformer and other related high-voltage devices are required to generate, transmit and distribute alternating voltage and current. These pieces of equipment are rated in terms of mega watt (MW) and mega voltage-ampere (MVA). Electrical appliances, such as DVD player, television, microwave oven, light bulb, refrigerator, ceiling fan and
Md. Abdus Salam, Quazi Mehbubar Rahman
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AC generator, transformer and other related high-voltage devices are required to generate, transmit and distribute alternating voltage and current. These pieces of equipment are rated in terms of mega watt (MW) and mega voltage-ampere (MVA). Electrical appliances, such as DVD player, television, microwave oven, light bulb, refrigerator, ceiling fan and
Md. Abdus Salam, Quazi Mehbubar Rahman
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2016
For our purposes, an AC network is simply a network, in which all voltage and current sources are sinusoidal with a common frequency.
Harry G. Kwatny, Karen Miu-Miller
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For our purposes, an AC network is simply a network, in which all voltage and current sources are sinusoidal with a common frequency.
Harry G. Kwatny, Karen Miu-Miller
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IEEE Transactions on Plasma Science, 2006
Electric pulse field methods are wildly used in biotechnology and industrial applications. A pulse generator (PG) is the device that provides the desired electric pulse field. In this paper, a novel ac-powered PG (ACPG) that is directly powered by normal ac power (i.e., utility power) is proposed.
null Liang-Rui Chen, null Neng-Yi Chu
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Electric pulse field methods are wildly used in biotechnology and industrial applications. A pulse generator (PG) is the device that provides the desired electric pulse field. In this paper, a novel ac-powered PG (ACPG) that is directly powered by normal ac power (i.e., utility power) is proposed.
null Liang-Rui Chen, null Neng-Yi Chu
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SNS AC Power Distribution and Reliability of AC Power Supply
Proceedings of the 2005 Particle Accelerator Conference, 2006When designing any power system under the new Construction Design and Maintenance (CDM) regulations (OSHA, NEC) and safety will be an important factor. It is worth acknowledging that safety and reliability can conflict. This can happen when safety considerations require the introduction of additional complexity, such as the provision of safety ...
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1977
In Chapter 2, we considered various methods for triggering SCRs. Of these, the most efficient method for power modulation with thyristors uses gate control. In AC circuits, the SCR can be turned on by the gate at any angle α with respect to the applied voltage. This angle α is the firing angle. Power control is obtained by varying the firing angle, and
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In Chapter 2, we considered various methods for triggering SCRs. Of these, the most efficient method for power modulation with thyristors uses gate control. In AC circuits, the SCR can be turned on by the gate at any angle α with respect to the applied voltage. This angle α is the firing angle. Power control is obtained by varying the firing angle, and
openaire +1 more source