摘要:
The present invention allows individual control of an output voltage of a main transformer and an output voltage of a teaser transformer while utilizing output characteristics of the respective transformer when a Scott connected transformer has control equipment arranged on the input side thereof, including first control equipment 5 arranged in one of two phases of the main transformer 2M on the input side in order to control a voltage or a current and second control equipment 6 arranged in one end of a primary coil 2c of the teaser transformer 2T on the input side in order to control a voltage or a current, the control equipment 5 and 6 controlling an output voltage of the main transformer 2M and an output voltage of the teaser transformer 2T individually.
摘要:
The present invention allows individual control of an output voltage of a main transformer and an output voltage of a teaser transformer while utilizing output characteristics of the respective transformer when a Scott connected transformer has control equipment arranged on the input side thereof, including first control equipment 5 arranged in one of two phases of the main transformer 2M on the input side in order to control a voltage or a current and second control equipment 6 arranged in one end of a primary coil 2c of the teaser transformer 2T on the input side in order to control a voltage or a current, the control equipment 5 and 6 controlling an output voltage of the main transformer 2M and an output voltage of the teaser transformer 2T individually.
摘要:
The present invention allows individual control of an output voltage of a main transformer and an output voltage of a teaser transformer while utilizing output characteristics of the respective transformer when a Scott connected transformer has control equipment arranged on the input side thereof, including first control equipment 5 arranged in one of two phases of the main transformer 2M on the input side in order to control a voltage or a current and second control equipment 6 arranged in one end of a primary coil 2c of the teaser transformer 2T on the input side in order to control a voltage or a current, the control equipment 5 and 6 controlling an output voltage of the main transformer 2M and an output voltage of the teaser transformer 2T individually.
摘要:
There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes first switching devices 311, 313, 315 and second switching devices 312, 314, 316 connected, respectively, with the phases R, S, T of the polyphase ac power, and configured to enable electrical switching operation in both directions. There are provided input lines R, S, T connected with input terminals of the switching devices and output lines P, N connected with output terminals of the switching devices. The output terminals of the first switching devices and the output terminals of the second switching devices are, respectively, arranged in a row. The first switching devices and second switching devices are arranged side by side with respect to a direction of the rows. The output lines are disposed below the input lines in an up and down direction.
摘要:
An apparatus and system for power conversion. In one embodiment, the apparatus comprises a transformer having a primary winding and a plurality of secondary windings; and a cyclo-converter comprising a plurality of switch pairs for converting an alternating current to an AC current, wherein each switch pair in the plurality of switch pairs (i) is coupled between two lines of an AC output and (ii) has a different secondary winding of the plurality of secondary windings coupled between its switches.
摘要:
A multiphase transformer rectifier unit for converting a three-phase alternating current supplied from a power distribution system to direct current supplied to at least one load. The multiphase transformer rectifier unit includes a magnetic core having a primary winding set and secondary winding set, and a rectifier circuit. The secondary winding set is arranged to generate N substantially equally distributed output phases, wherein N is an odd number multiple of 3, and N>3, and the primary winding set (17) is arranged to provide a positive or negative phase shift equal substantially to 360 ( 8 × N ) degrees of said output phases. Also an arrangement of two inventive multiphase transformer rectifier units for reducing current distortion in the power distribution system.
摘要:
Three coils, each having several serial windings (A1-A4 or 5; B1-B4 or 5; C1-C4 or 5), have selected windings connected in a delta (A2-A4 or 5; B2-B4 or 5; C2-CR or 5). Input AC power is applied through outrigger windings (A1, B1, C1)at the delta apices (A, B, C). At least two strategically located, direct tap, natural output points (01-06; or 01, 02, 04, 05, 07, 08) are provided at each side of the delta. For 6-phase output, only the six natural output points (01-06) are required. For 9-phase output, an additional central output terminal (09, 06, 03) connects to each side of the delta through a stub winding (A6, B6, C6). The 6-phase or 9-phase output is passed to a rectifier circuit (R).
摘要:
The invention relates to a prism-type electrical converter for the generation, transmission, distribution and supply of electric current, which essentially comprises two systems, namely a magnetic system and an electrical system, plus an additional thermal control or cooling system. As a result, the converter has three-phase side. The three-phase magnetic circuit forms the base of the magnetic circuit. The two-phase side is formed on the three constituent magnetic circuits thereof. More specifically, the inventive converter comprises a magnetic silicon steel core which can take the form of broken or continuous spiral columns, having a circular, elliptical, cross-shaped section, etc., an Evans-type converter which is a broken spiral-type converter or a Wescord-type converter or coiled with junction. The operation of the inventive converter is based on the most commonly used system, comprising the vectorial sum of the two existing phases, such as to produce the third phase, but can be extended from two to six phases. Prism connections ETO-120-2/3 and ETO-240-2/3 are used as a reference, which indicate that the missing phase is formed from two supply phases, i.e. phase a by sections a1 and a2, phase b by sections b1 and b2, phase c by sections c1 and c2, in which any phase can be generated depending on the supply phases. Therefore, if phases a and b are present, the missing phase is c, if phases b and c are present, the missing phase is a, and if phases a and c are present, the missing phase is b, such as to produce the phase that does not already exist. In this way, a three-phase output system with any voltage level supplies the three-phase voltage which, by means of another output system with any voltage level, supplies the three-phase voltage that can be used for any electrical system that is used to generate, transmit, distribute and supply electrical power. In addition, the prism conversion system can be used to obtain a balanced three-phases system with neutral that can connect any three-phase, two-phase or single-phase load from a two-phase supply with two wires, there by rendering the invention remarkable in relation to existing electrical converters which have no general application. Moreover, said prism-type connection or system has unlimited applications. Furthermore, the electrical converter is produced in a novel manner comprising the following steps consisting in: producing the magnetic core, stacking to form a three-phase assembly, forming packets, pressing same to form the power or distribution power, forming the definitive magnetic core and, finally, annealing said magnetic core, thereby defining a novel method of producing the inventive prism-type converter.