CN202364129U - High-voltage variable-frequency power supply device - Google Patents
High-voltage variable-frequency power supply device Download PDFInfo
- Publication number
- CN202364129U CN202364129U CN2011204878661U CN201120487866U CN202364129U CN 202364129 U CN202364129 U CN 202364129U CN 2011204878661 U CN2011204878661 U CN 2011204878661U CN 201120487866 U CN201120487866 U CN 201120487866U CN 202364129 U CN202364129 U CN 202364129U
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- Prior art keywords
- frequency
- frequency converter
- transformer
- voltage cable
- voltage
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Abstract
The utility model discloses a high-voltage variable-frequency power supply device, which is characterized by comprising a high-voltage cable incoming cabinet and a transformer, wherein a high-voltage cable is connected into the high-voltage cable incoming cabinet and is externally connected to the transformer, the high-voltage cable incoming cabinet is provided with a plurality of steps of current-limiting resistors, the transformer is connected with a frequency converter through the high-voltage cable, the frequency converter is formed by connecting a plurality of PWM (Pulse Width Modulation) power units in series and parallel and is connected with a sine filter through the high-voltage cable, and the sine filter is connected with a high-voltage cable outgoing cabinet through the high-voltage cable. The high-voltage variable-frequency power supply device is further provided with a PLC (Program Logic Controller), which is connected with the frequency converter through a signal line. The high-voltage variable-frequency power supply device disclosed by the utility model is more reasonable in structure, good in stability and convenient to use and control, and can be used for realizing high-voltage variable-frequency output effectively.
Description
Technical field
The utility model relates to a kind of frequency converter, particularly a kind of high-pressure frequency-conversion supply unit.
Background technology
Bank electricity frequency changing power device of the prior art is the low-voltage variable frequency supply unit, and its defective is power supply is had relatively high expectations; Power factor (PF) is lower; Frequency stability precision is low; Output cable length is had strict restriction, and electric current major break down rate is higher, and the big output waveform of harmonic constant is poor, and safe handling has certain influence to shipborne equipment.
Summary of the invention
The utility model technical problem to be solved is the deficiency to prior art, provides that a kind of structure is more reasonable, good stability, uses and control high-pressure frequency-conversion supply unit easily.
The utility model technical problem to be solved is to realize through following technical scheme.The utility model is a kind of high-pressure frequency-conversion supply unit; Be characterized in: it comprises high pressure incoming line cabinet and transformer; High-tension cable inserts the high pressure incoming line cabinet and picks out to transformer; Described high pressure incoming line cabinet is provided with some grades of current-limiting resistances, and described transformer is connected with frequency converter through high-tension cable, and described frequency converter is made up of through the mode of series connection and parallel connection several pwm power unit; Frequency converter is connected with sinusoidal filter through high-tension cable, and sinusoidal filter is connected with the high-voltage terminal cabinet through high-tension cable; It also is provided with the PLC Programmable Logic Controller, and described PLC Programmable Logic Controller is connected with frequency converter through holding wire.
The utility model technical problem to be solved can also further realize through following technical scheme.Above-described high-pressure frequency-conversion supply unit is characterized in: it also is provided with photoelectric conversion module, and described photoelectric conversion module is connected with the PLC Programmable Logic Controller, and through the multimode optical cable transmission signals.
When the utility model used, power station high voltage bus feed three-phase high-voltage was given frequency converter to the utility model after the transformer step-down; Single-phase output realizes that through handing over orthogonal PWM inversion the high pressure of variable voltage variable frequency is directly exported, and high pressure output back is handled through the shaping to waveform by filter; Output voltage is the sine wave with electric standard that meets of low harmonic wave, and through output unit output, the comprehensive factor of converter unit input can reach more than 0.95; Pass through simultaneously input, output current, voltage; The sampling of waveform etc., and deliver to the control of PLC analyzing and processing, thus realize many rings close-loop feedback control of whole frequency changing power device.Adopt band analog quantity PLC to carry out data acquisition and computing management communication, control is more convenient, and external man-machine interface is monitored data and equipment is controlled, and makes operation easier.
The key technical indexes of the utility model high-pressure frequency-conversion power supply sees the following form:
Simultaneously, can adopt photoelectric conversion module, be connected with internet or other adjacent or upper equipment through multimode optical cable, thereby make other equipment carry out Long-distance Control and monitoring with this equipment.
Description of drawings
Fig. 1 is a kind of structural principle schematic block diagram of the utility model.
Embodiment
Following with reference to accompanying drawing, further describe the concrete technical scheme of the utility model, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1; With reference to Fig. 1, a kind of high-pressure frequency-conversion supply unit, it comprises high pressure incoming line cabinet and transformer; High-tension cable inserts the high pressure incoming line cabinet and picks out to transformer; Described high pressure incoming line cabinet is provided with some grades of current-limiting resistances, and described transformer is connected with frequency converter through high-tension cable, and described frequency converter is made up of through the mode of series connection and parallel connection several pwm power unit; Frequency converter is connected with sinusoidal filter through high-tension cable, and sinusoidal filter is connected with the high-voltage terminal cabinet through high-tension cable; It also is provided with the PLC Programmable Logic Controller, and described PLC Programmable Logic Controller is connected with frequency converter through holding wire.
Embodiment 2, and in the embodiment 1 described high-pressure frequency-conversion supply unit: it also is provided with photoelectric conversion module, and described photoelectric conversion module is connected with the PLC Programmable Logic Controller, and through the multimode optical cable transmission signals.
Claims (2)
1. high-pressure frequency-conversion supply unit; It is characterized in that: it comprises high pressure incoming line cabinet and transformer; High-tension cable inserts the high pressure incoming line cabinet and picks out to transformer; Described high pressure incoming line cabinet is provided with some grades of current-limiting resistances, and described transformer is connected with frequency converter through high-tension cable, and described frequency converter is made up of through the mode of series connection and parallel connection several pwm power unit; Frequency converter is connected with sinusoidal filter through high-tension cable, and sinusoidal filter is connected with the high-voltage terminal cabinet through high-tension cable; It also is provided with the PLC Programmable Logic Controller, and described PLC Programmable Logic Controller is connected with frequency converter through holding wire.
2. high-pressure frequency-conversion supply unit according to claim 1 is characterized in that: it also is provided with photoelectric conversion module, and described photoelectric conversion module is connected with the PLC Programmable Logic Controller, and through the multimode optical cable transmission signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204878661U CN202364129U (en) | 2011-11-30 | 2011-11-30 | High-voltage variable-frequency power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204878661U CN202364129U (en) | 2011-11-30 | 2011-11-30 | High-voltage variable-frequency power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364129U true CN202364129U (en) | 2012-08-01 |
Family
ID=46575284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204878661U Ceased CN202364129U (en) | 2011-11-30 | 2011-11-30 | High-voltage variable-frequency power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202364129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497112A (en) * | 2011-11-30 | 2012-06-13 | 连云港星火岸电工程有限公司 | High voltage frequency conversion power supply device |
-
2011
- 2011-11-30 CN CN2011204878661U patent/CN202364129U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497112A (en) * | 2011-11-30 | 2012-06-13 | 连云港星火岸电工程有限公司 | High voltage frequency conversion power supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 222000, Jiangsu, Lianyungang economic and Technological Development Zone, Lingang industrial area, Gu Wei Road East (Shang Ming, LED company, North), Lianyungang Patentee after: Jiangsu Xinhang Electrical Co., Ltd. Address before: 222000, Jiangsu, Lianyungang economic and Technological Development Zone, Lingang industrial area, Gu Wei Road East (Shang Ming, LED company, North), Lianyungang Patentee before: Lianyungang Xinghuoan Electrical Engineering Co., Ltd. |
|
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20180104 Decision number of declaring invalidation: 34440 Granted publication date: 20120801 |