Power System Harmonics Causes and Effects of Variable Frequency
... Often, the vendor or supplier of non-linear load equipment, such as variable frequency drives, can evaluate the effects that the equipment may have on the distribution system. This usually involves details related to the distribution system design and impedances, similar to performing a short circui ...
... Often, the vendor or supplier of non-linear load equipment, such as variable frequency drives, can evaluate the effects that the equipment may have on the distribution system. This usually involves details related to the distribution system design and impedances, similar to performing a short circui ...
Comparative analysis of 36, 48, 60 pulse AC-DC
... current, DC voltage ripples and form factor[6]. All the simulations have been carried out for similar ratings of R Load, for all the multi-pulse converters configurations, so as to represent a fair comparison among controlled continuations of multi-pulse converters [9]. The presented simulation resu ...
... current, DC voltage ripples and form factor[6]. All the simulations have been carried out for similar ratings of R Load, for all the multi-pulse converters configurations, so as to represent a fair comparison among controlled continuations of multi-pulse converters [9]. The presented simulation resu ...
IOSR Journal of Electrical and Electronics Engineering PP 09-14 www.iosrjournals.org
... in the heat thereby the temperature of the windings, core, oil and the tank rises. The heat is dissipated from the transformer tank and the radiator in to the atmosphere. Transformer cooling helps in maintaining the temperature rise of various parts within permissible limits. In case of Transformer, ...
... in the heat thereby the temperature of the windings, core, oil and the tank rises. The heat is dissipated from the transformer tank and the radiator in to the atmosphere. Transformer cooling helps in maintaining the temperature rise of various parts within permissible limits. In case of Transformer, ...
Constant-Voltage, Constant-Current Controller With Primary
... operates in discontinuous conduction mode with valley-switching to minimize switching losses. The modulation scheme is a combination of frequency and primary peak current modulation to provide high conversion efficiency across the load range. The control law provides a wide-dynamic operating range o ...
... operates in discontinuous conduction mode with valley-switching to minimize switching losses. The modulation scheme is a combination of frequency and primary peak current modulation to provide high conversion efficiency across the load range. The control law provides a wide-dynamic operating range o ...
liquid-filled, medium-voltage transformers
... 1. High voltage and low voltage bushings shall be furnished with the ratings shown on the Transformer Data Sheet. 2. The bushings shall be sidewall mounted and suitable for high and low voltage terminations as indicated on the Transformer Data Sheet. D. Core 1. The core shall be clamped and braced t ...
... 1. High voltage and low voltage bushings shall be furnished with the ratings shown on the Transformer Data Sheet. 2. The bushings shall be sidewall mounted and suitable for high and low voltage terminations as indicated on the Transformer Data Sheet. D. Core 1. The core shall be clamped and braced t ...
High-Bandwidth High-Temperature (250 °C / 500 °F) Isolated DC
... and 175 ◦ C [9] due to the high intrinsic charge carrier concentration of Si for temperatures exceeding 175 ◦ C [10]. In order to effectively remove the heat dissipated by the power semiconductor switches and maintain a reasonable size of the cooling system and thus reduce the impact of the high amb ...
... and 175 ◦ C [9] due to the high intrinsic charge carrier concentration of Si for temperatures exceeding 175 ◦ C [10]. In order to effectively remove the heat dissipated by the power semiconductor switches and maintain a reasonable size of the cooling system and thus reduce the impact of the high amb ...
AND8273 - Design of a 100 W Active Clamp Forward DC
... dc−dc converter. This IC operates from an input supply up to 150 V, thus covering the input voltages usually found in telecom, datacom and 42 V automotive systems. One can also note that the NCP1562 can be used in mains related applications (e.g. desktop, server, flat TVs) as it can be supplied by a ...
... dc−dc converter. This IC operates from an input supply up to 150 V, thus covering the input voltages usually found in telecom, datacom and 42 V automotive systems. One can also note that the NCP1562 can be used in mains related applications (e.g. desktop, server, flat TVs) as it can be supplied by a ...
Medium Voltage Switchgear
... Conventional inductive resin insulated voltage and current transformers according to IEC/AS 60044-2 and IEC/AS 60044-1 shall be applied and designed according to metering and protection requirements. It is manufacturer’s responsibility to match instrument transformer performance to connected protect ...
... Conventional inductive resin insulated voltage and current transformers according to IEC/AS 60044-2 and IEC/AS 60044-1 shall be applied and designed according to metering and protection requirements. It is manufacturer’s responsibility to match instrument transformer performance to connected protect ...
Low EMI Isolation for Medical Equipment Applications
... Many medical systems incorporate galvanic isolation to protect patients and equipment from hazardous voltages, to level shift signals between ground voltage domains and/or to mitigate ground noise in highly sensitive circuit areas. Medical electronic systems often use transformers and/or optocoupler ...
... Many medical systems incorporate galvanic isolation to protect patients and equipment from hazardous voltages, to level shift signals between ground voltage domains and/or to mitigate ground noise in highly sensitive circuit areas. Medical electronic systems often use transformers and/or optocoupler ...
Two-Way Current-Combining w-Band Power Amplifier in 65
... matching network with a higher impedance transformation ratio. Consequently, such optimization leads to tradeoffs between output power and efficiency. To mitigate this issue, power-combining structures with multiple PA channels are widely adopted [14]–[20]. Three power-combining schemes are normally ...
... matching network with a higher impedance transformation ratio. Consequently, such optimization leads to tradeoffs between output power and efficiency. To mitigate this issue, power-combining structures with multiple PA channels are widely adopted [14]–[20]. Three power-combining schemes are normally ...
Design Optimization of High Frequency Transformer for Dual Active
... (DAB) isolated DC-DC converter [3], [4] shown in Fig. 1(a) is often considered as a preferred candidate for such applications because of its advantages on galvanic isolation, switching loss reduction, electromagnetic interference (EMI) improvement, and efficiency gain. Generally, this topology consi ...
... (DAB) isolated DC-DC converter [3], [4] shown in Fig. 1(a) is often considered as a preferred candidate for such applications because of its advantages on galvanic isolation, switching loss reduction, electromagnetic interference (EMI) improvement, and efficiency gain. Generally, this topology consi ...
Wireless Inductive Charging for Low Power Devices
... the near-field power transfer. Higher frequencies in the range of gigahertz employ longer distances which fall in the Far field transfers. Due to the low charging efficiency and safety issues far field is not employed in low power portable devices. Transmission using microwave works on far field at a ...
... the near-field power transfer. Higher frequencies in the range of gigahertz employ longer distances which fall in the Far field transfers. Due to the low charging efficiency and safety issues far field is not employed in low power portable devices. Transmission using microwave works on far field at a ...
Transformer types
A variety of types of electrical transformer are made for different purposes. Despite their design differences, the various types employ the same basic principle as discovered in 1831 by Michael Faraday, and share several key functional parts.