CN201690400U - Frequency-conversion soft-start hybrid power cabinet - Google Patents

Frequency-conversion soft-start hybrid power cabinet Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
frequency
soft
frequency converter
motor
load output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202147614U
Other languages
Chinese (zh)
Inventor
杨进军
刘壁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI FATO ENTERPRISE GROUP CO Ltd
Original Assignee
SHANGHAI FATO ENTERPRISE GROUP CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI FATO ENTERPRISE GROUP CO Ltd filed Critical SHANGHAI FATO ENTERPRISE GROUP CO Ltd
Priority to CN2010202147614U priority Critical patent/CN201690400U/en
Application granted granted Critical
Publication of CN201690400U publication Critical patent/CN201690400U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

The soft hybrid power cabinet that opens of frequency conversion
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.
CN2010202147614U 2010-06-03 2010-06-03 Frequency-conversion soft-start hybrid power cabinet Expired - Fee Related CN201690400U (en)

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

Family

ID=43378677

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
CN (1) CN201690400U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN101383590B (en) Dragging device with high starting performance induction motor and frequency transformer cooperatively running
CN106849824A (en) Vidacare corp, electric drive system and electrical equipment
CN201690400U (en) Frequency-conversion soft-start hybrid power cabinet
CN101814873B (en) Soft starter used for continuous frequency conversion and voltage transformation of motor
CN201536344U (en) On-line electric pole-changing speed regulation control circuit for two-speed motor
CN204847730U (en) Colliery is synchronous device that directly drives of permanent magnetism for lifting machine
CN201690395U (en) Soft starter for continuous frequency conversion and voltage transformation of motor
CN103713559A (en) Dragging system for electricity-stealing-prevention energy-saving pumping unit
CN103580584A (en) Redundancy medium voltage alternating current-direct current-alternating current frequency conversion device of duplex winding synchronous motor of mine hoist
CN203911835U (en) Stringing type motor vehicle-used frequency converter
CN203645586U (en) Integration system of oil well heating and intelligent control of clustered-well oil pumping units
CN201312282Y (en) Speed changing system of static frequency converter
CN201947218U (en) Single-phase induction motor speed regulation control system
CN202612060U (en) Air compressor
CN204669268U (en) Three-power motor conversion equipment
CN201910765U (en) Energy-saving starting control circuit of asynchronous motor
CN105024396A (en) Energy feedback frequency converter
CN101162183A (en) Novel energy-saving control system for reversible dc transmission test bench
CN203859654U (en) Voltage-regulating and speed-regulating asynchronous motor
CN201039081Y (en) Frequency conversion speed-adjusting circuit for mine lifter
CN103368206B (en) rectification feedback circuit
CN203481842U (en) Rectified feedback circuit
CN204652276U (en) Asynchronous machine energy-saving controller
CN211127640U (en) Permanent magnet motor dragging reactive feedback integrated device
CN202076986U (en) Special frequency converter for constant voltage water supply machine

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