Patent
High voltage variable frequency control system
Ding Senhao,Wang Xile,Li Ye,Xu Yongyue,Dai Di,Wang Runbei +5 more
- 26 Dec 2012
2
TL;DR: In this paper, the utility model relates to a high voltage variable frequency control system, which comprises a phase-shifting transformer, wherein a primary side of the phase shifting transformer is used to connect with a power grid, a secondary side of a phase shift transformer comprises at lest two groups of secondary coils, each group of secondary coil comprises an A phase secondary coil, a B phase secondary coils and a C phase primary coil, the connection methods of the three secondary coils in each group are the same, and each secondary coil is connected with a non-controlled rectifier-controlled
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Abstract: The utility model relates to a high voltage variable frequency control system, which comprises a phase-shifting transformer, wherein a primary side of the phase-shifting transformer is used to connect with a power grid, a secondary side of the phase-shifting transformer comprises at lest two groups of secondary coils, each group of secondary coils comprise an A phase secondary coil, a B phase secondary coil and a C phase secondary coil, the connection methods of the three secondary coils in each group are the same, and each secondary coil is connected with a non-controlled rectifier-controlled inverter power unit Each phase of voltage is produced through a plurality of power voltage which is connected in series by adopting a multilevel phase-shifting rectifier mode The high voltage variable frequency control system enables withstood voltage of power pipes of each power unit to be reduced in multiples, greatly reduces cost, and increases whole reliability
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Citations
Patent
High voltage frequency converter input current detection method and novel high voltage frequency converter
Hou Yuzhu
- 02 Dec 2015
TL;DR: In this article, a high voltage frequency converter input current detection method and a novel HVF converter which is realized through the method is described, which can accurately and effectively detect the input current of the high-voltage frequency converter, satisfies the reinforcement insulation requirement between the low voltage current inductors and the cables, greatly saves the length of the cable for enhancing the insulation, and reduces the product cost for the HVFC.
Patent
Mine 10 KV anti-explosion frequency converter and method for controlling motor through same
Pu Shaoning,Gao Qiang,Chen Yang,Chen Xiaoyan +3 more
- 13 Jun 2017
TL;DR: In this article, a mine 10 KV anti-explosion frequency converter and a method for controlling a motor through the same operation was proposed, which is suitable for 10 kV highvoltage input, and the output voltage waveform of the frequency converter is very close to a sine wave.
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Hao Zhang
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Patent
Multiple-level serially connected high-voltage inverter
Liu Kebin,Wang Weiqin,Liu Jun +2 more
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TL;DR: In this paper, the main controller is connected to the power inverter via optical cable and adopts fully no-CPU control and each of the power converter units has one bypass control and drive circuit to ensure the normal working of the whole system in case of some fault.
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Patent
Energy feedback type power unit cascaded high voltage frequency converter
Yongpan Li
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TL;DR: In this article, an energy feedback type power unit cascaded high voltage frequency converter, which comprises a main transformer, reactors, power units, a master controller and the like, was presented.
8
Patent
Integrated control system based on high-voltage motor control and reactive power compensation
Kaifa Sun,Xianchang Xu,Cui Pengkun,Fanqing Rong +3 more
- 25 Apr 2012
TL;DR: In this paper, an integrated control system based on high-voltage motor control and reactive power compensation is presented, which includes a three-phase transformer, power units, a voltage transformer, an isolation transformator, a current transformer, and a master controller, wherein each power unit comprises a power unit controller.
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