CN201690400U - Frequency-conversion soft-start hybrid power cabinet - Google Patents
Frequency-conversion soft-start hybrid power cabinet Download PDFInfo
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- CN201690400U CN201690400U CN2010202147614U CN201020214761U CN201690400U CN 201690400 U CN201690400 U CN 201690400U CN 2010202147614 U CN2010202147614 U CN 2010202147614U CN 201020214761 U CN201020214761 U CN 201020214761U CN 201690400 U CN201690400 U CN 201690400U
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- frequency
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- frequency converter
- motor
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Abstract
The utility model discloses a frequency-conversion soft-start hybrid power cabinet, comprising a frequency converter, a soft starter and a plurality of load output terminals, wherein each load output terminal is connected with the input terminal of a three-phase alternate current power supply directly by the frequency converter and the soft starter. The system adopts the technologies of frequency conversion and soft start, the motor has small starting current, and a power grid is less stricken, the hybrid power cabinet is suitable for the running of the motor with large power; three motors are driven simultaneously by one frequency converter and one soft starter, the equipment cost is greatly saved, and the soft starter used as the backup running mode of the frequency converter greatly improves the work reliability and saves time for the running and maintenance of the equipment.
Description
Technical field
The utility model belongs to the power switchgear technical field, especially at the startup of many high-power power-equipments, and a kind of frequency conversion of proposition, the soft hybrid power cabinet that opens.
Background technology
Frequency converter generally is to utilize the on-off action of power semiconductor device power frequency supply to be transformed to the electric energy control device of another frequency, in fact frequency converter is exactly an inverter, it at first is that alternating current is become direct current, with electronic component direct current is carried out switch then. become alternating current, the general bigger frequency converter controllable silicon of power, and establish the device of an adjustable frequency, make frequency adjustable within the specific limits, be used for controlling rotating speed of motor, make rotating speed adjustable in certain scope, frequency converter is widely used in the speed governing of alternating current machine, variable-frequency control technique is the direction of Modern Electrical Drive technology important development, along with the development of power electronic technology, alternating frequency conversion technique moves to maturity from the theory to reality gradually.Frequency converter not only speed governing is level and smooth, and scope is big, the efficient height, and starting current is little, operate steadily, and energy-saving effect is obvious.Therefore, ac variable frequency speed regulation has replaced governing systems such as traditions of the past slip regulating speed, pole changing, DC speed regulation gradually, the fields such as metallurgy, weaving, printing and dyeing, cigarette machine production line and building, water supply that are applied to more and more widely.Generally be divided into several major parts such as rectification circuit, flat wave circuit, control circuit, inverter circuit.
Soft initiator is the soft start of a kind of current collection machine, soft stop, light-load energy saving and the kinds of protect function novel motor control assembly in one, is called Soft Starter abroad.Its main composition is three-phase anti-parallel thyristor and the electronic control circuit thereof that is serially connected with between power supply and the controlled motor.The utilization diverse ways, the angle of flow of control three-phase anti-parallel thyristor makes the input voltage of controlled motor change by different requirements, just can realize different functions.
Soft initiator is the product of two kinds of complete different purposes with frequency converter.Frequency converter is the place that need to be used to speed governing, and its output not only changes voltage but also changes frequency simultaneously; Soft initiator is actually a voltage regulator, and when being used for electric motor starting, output only changes voltage and do not change frequency.Frequency converter possesses all soft starter functions, but its price is much more expensive than soft initiator, and structure is much also complicated.
Summary of the invention
The purpose of this utility model is to make full use of the advantage of above-mentioned two kinds of starters, proposes a kind of startup that is suitable for many high-power power-equipments, with low cost, the frequency conversion of reliable operation, the soft hybrid power cabinet that opens.
The technical solution of the utility model is achieved in that the soft hybrid power cabinet that opens of a kind of frequency conversion, it is characterized in that: it comprises a frequency converter, a soft initiator and a plurality of load output, each load output all passes through three kinds of modes and is connected with the three-phase alternating-current supply incoming end, first kind of connected mode is to be connected with the three-phase alternating-current supply incoming end with frequency converter by A.C. contactor, second kind of connected mode is to be connected with the three-phase alternating-current supply incoming end with soft initiator by A.C. contactor, and the third connected mode is directly to be connected with the three-phase alternating-current supply incoming end by A.C. contactor.
The utility model compared with prior art has following advantage: native system adopts frequency conversion and soft start, and the electric motor starting electric current is little, and is little to the electrical network impact, is suitable for the work operation than high power motor; Secondly, drag three motor simultaneously, saved equipment cost greatly by a frequency converter and soft initiator; The 3rd, soft initiator is as the reserve operation mode of frequency converter, improved the reliability of work greatly, and striven for the time for the operation maintenance of equipment.
Description of drawings
Fig. 1 is the soft hybrid power cabinet block diagram that opens of the utility model frequency conversion.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
As shown in Figure 1, the soft hybrid power cabinet that opens of a kind of frequency conversion, it comprises a frequency converter, a soft initiator and three load outputs, each load output all passes through three kinds of modes and is connected with the three-phase alternating-current supply incoming end, first kind of connected mode is to be connected with the three-phase alternating-current supply incoming end with frequency converter by A.C. contactor, load output 1 is connected with the three-phase alternating-current supply incoming end with frequency converter by A.C. contactor 1, load output 2 is connected with the three-phase alternating-current supply incoming end with frequency converter by A.C. contactor 2, and load output 3 is connected with the three-phase alternating-current supply incoming end with frequency converter by A.C. contactor 3; Second kind of connected mode is to be connected with the three-phase alternating-current supply incoming end with soft initiator by A.C. contactor, load output 1 is connected with the three-phase alternating-current supply incoming end with soft initiator by A.C. contactor 4, load output 2 is connected with the three-phase alternating-current supply incoming end with soft initiator by A.C. contactor 5, and load output 3 is connected with the three-phase alternating-current supply incoming end with soft initiator by A.C. contactor 6; The third connected mode is directly to be connected with the three-phase alternating-current supply incoming end by A.C. contactor, load output 1 directly is connected with the three-phase alternating-current supply incoming end by A.C. contactor 7, load output 2 directly is connected with the three-phase alternating-current supply incoming end by A.C. contactor 8, and load output 4 directly is connected with the three-phase alternating-current supply incoming end by A.C. contactor 9.
The native system operation principle is as follows: three motors are finished the electric machinery operational objective jointly, and load output 1 connects motor 1, and load output 2 connects motor 2, and load output 3 connects motor 3; Under the normal condition, move by 1 frequency control of frequency converter starter motor, when a motor can not satisfy the work operational objective, then motor 1 is switched to directly and be connected with the three-phase alternating-current supply incoming end by commutation circuit, the automatic starter motor 2 frequency controls operation of frequency converter, when motor 1,2 equal full-load runs still can not be finished the work operational objective, by commutation circuit motor 2 is switched to directly again and be connected with the three-phase alternating-current supply incoming end, the automatic starter motor 3 frequency controls operation of frequency converter is up to satisfying the work service requirement.When frequency converter breaks down, then press said procedure starter motor 1, motor 2, motor 3 emergency respectively respectively by soft initiator, satisfy the requirement that electric machinery runs without interruption.
Claims (1)
1. soft hybrid power cabinet that opens of frequency conversion, it is characterized in that: it comprises a frequency converter, a soft initiator and a plurality of load output, each load output all passes through three kinds of modes and is connected with the three-phase alternating-current supply incoming end, first kind of connected mode is to be connected with the three-phase alternating-current supply incoming end with frequency converter by A.C. contactor, second kind of connected mode is to be connected with the three-phase alternating-current supply incoming end with soft initiator by A.C. contactor, and the third connected mode is directly to be connected with the three-phase alternating-current supply incoming end by A.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202147614U CN201690400U (en) | 2010-06-03 | 2010-06-03 | Frequency-conversion soft-start hybrid power cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202147614U CN201690400U (en) | 2010-06-03 | 2010-06-03 | Frequency-conversion soft-start hybrid power cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201690400U true CN201690400U (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202147614U Expired - Fee Related CN201690400U (en) | 2010-06-03 | 2010-06-03 | Frequency-conversion soft-start hybrid power cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN201690400U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420563A (en) * | 2011-12-19 | 2012-04-18 | 广州智光电机有限公司 | Intelligent bypass system for high-voltage frequency converter |
| CN104181856A (en) * | 2014-09-03 | 2014-12-03 | 山西潞安海通工贸有限公司 | Mining power supply switching system |
| CN104638987A (en) * | 2015-02-11 | 2015-05-20 | 陕西科技大学 | Method for controlling soft starting of multiple-driven-by-two redundant motor |
| CN107956458A (en) * | 2016-10-18 | 2018-04-24 | 陕西吉特安全科技有限公司 | A kind of energy saving flood pattern of intelligent control |
-
2010
- 2010-06-03 CN CN2010202147614U patent/CN201690400U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420563A (en) * | 2011-12-19 | 2012-04-18 | 广州智光电机有限公司 | Intelligent bypass system for high-voltage frequency converter |
| CN102420563B (en) * | 2011-12-19 | 2015-03-04 | 广州智光电机有限公司 | Intelligent bypass system for high-voltage frequency converter |
| CN104181856A (en) * | 2014-09-03 | 2014-12-03 | 山西潞安海通工贸有限公司 | Mining power supply switching system |
| CN104638987A (en) * | 2015-02-11 | 2015-05-20 | 陕西科技大学 | Method for controlling soft starting of multiple-driven-by-two redundant motor |
| CN107956458A (en) * | 2016-10-18 | 2018-04-24 | 陕西吉特安全科技有限公司 | A kind of energy saving flood pattern of intelligent control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20180603 |