CN201260141Y - Soft start type control and protection switch electric appliance - Google Patents
Soft start type control and protection switch electric appliance Download PDFInfo
- Publication number
- CN201260141Y CN201260141Y CNU200820039535XU CN200820039535U CN201260141Y CN 201260141 Y CN201260141 Y CN 201260141Y CN U200820039535X U CNU200820039535X U CN U200820039535XU CN 200820039535 U CN200820039535 U CN 200820039535U CN 201260141 Y CN201260141 Y CN 201260141Y
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- control
- circuit
- protection switch
- thyristor
- soft
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Abstract
The utility model relates to a soft-starting control and protection switch electric appliance, which belongs to the technical field of motor automatic control, and is mainly characterized in that: thyristors that correspond to phases and are connected with radiators are fixedly arranged on an expanded base at one side of the control and protection switch, and an inlet terminal and an outlet terminal of each thyristor are respectively connected with the upper end and the lower end of a corresponding phase main contactor by a link row; an electromagnetic coil device or a permanent magnet driving device in the control and protection switch is connected with an output of a microprocessor in a soft-starting control circuit; a control electrode of each thyristor is connected with a pulse generation and power-factor angle testing circuit in the soft-starting control circuit, the utility model changes the starting and stopping modes by adding a three-phase thyristor module and utilizing an electronic circuit to control the conduction angle dimension of the thyristors, thereby protecting the motor more comprehensively, and the utility model reduces the use cost and increases the cost/performance ratio, therefore, the utility model has broader range of application.
Description
Technical field
The utility model relates to a kind of soft formula control and protection switch electrical equipment, belongs to motor automatic control technology field.
Background technology
In the motor current supply circuit; now adopted advanced relatively control protection switch; its structure mainly comprises base plate; pedestal; loam cake; main contactor on the pedestal; electromagnetic spool device or permanent magnet driving device; release; the performance element control protection switch that the control circuit of transmission mechanism and external power supply constitutes; control circuit is to have the control power circuit; the signal condition treatment circuit; the CPU master chip of control voltage sampling circuit is core and peripheral circuit thereof; and comprise high-speed CPU; the release output circuit; the three-phase current sample circuit, what be connected with high-speed CPU is fixed on the interactive keyboard liquid crystal operation mechanism that covers; the both-way communication interface.This product has protections such as the phase failure, stall, severe three-phase imbalance; Can provide effective control and defencive function for circuit.But its characteristic is the direct-on-line starting mode.And electric current and mechanical shock during the motor direct-on-line starting are excessive, all can produce certain influence the useful life of its a pair of self and driven equipment; It two can not use total head start and stop control, for example elevating mechanism, heat pump etc. at some special occasions; Its three some motor can produce bigger pressure drop of grid when direct-on-line starting also can influence mains supply and other equipment operations.
Soft initiator is also arranged now, by housing, the thyristor of corresponding each phase, radiator and the soft control circuit that opens constitute in the housing, the control circuit of soft initiator comprises the C8051FXXX microprocessor, coil in the output connection control circuit of the pulse generation that microprocessor connects and power factor (PF) angle detection circuit, parameter setting and show state circuit, microprocessor, the external instrument transformer of microprocessor carries out current detecting, and external power supply reaches voltage signal synchronously and detects.The three-phase thyristor module obtains initial voltage, control thyristor angle of flow α, the startup stopped process of regulating output voltage, control motor by designed pattern.
Because of existing soft initiator, control protection switch are independent devices, need in the use soft initiator to be connected with the control protection switch by lead, on-the-spot connecting line is very complicated, and use cost is also high.
Summary of the invention
The purpose of this utility model provides a kind of soft formula control and protection switch electrical equipment; be independent devices at existing soft initiator, control protection switch; need in the use to connect by lead; control connection line complexity; easily produce fault; the high deficiency of use cost; not only can significantly reduce the connecting line that uses the scene by the utility model; reduce use cost; and can reduce the energy consumption of motor; improve the utilance of motor, also further reduce Harmonic Interference the useful life of enhancing motor electrical network.
The purpose of this utility model is achieved through the following technical solutions, a kind of soft formula control and protection switch electrical equipment, mainly comprise base plate, pedestal, loam cake, main contactor on the pedestal, electromagnetic spool device or permanent magnet driving device, release, the control protection switch that the control circuit of transmission mechanism and external power supply constitutes, control circuit is to have the control power circuit, the signal condition treatment circuit, the CPU master chip of control voltage sampling circuit is core and peripheral circuit thereof, and comprise high-speed CPU, the release output circuit, the three-phase current sample circuit, what be connected with high-speed CPU is fixed on the interactive keyboard liquid crystal operation mechanism that covers, the both-way communication interface, it is characterized in that, fixedly install the thyristor that is connected with radiator of corresponding each phase on the pedestal that control protection switch one side enlarges, the advancing of each thyristor, leading-out terminal is respectively through connecting the upper and lower side that row connects corresponding phase main contactor; Electromagnetic spool device or permanent magnet driving device in the control protection switch connect soft output of opening microprocessor in the control circuit; The control utmost point of each thyristor connects soft open pulse generation and power factor (PF) angle detection circuit in the control circuit.
The radiator of each thyristor and connection thereof is Chinese character pin-shaped setting on the pedestal.
The utility model is the improvement on existing control protection switch architecture basics; the device that will have soft initiator in a side of controlling protection switch now unites two into one with it; become original outside and be connected to inner the connection; realization utilizes the size of the electronic circuit control thyristor angle of flow to change the mode that stops that starting by increasing the brilliant lock module of three-phase; thereby reach motor is more fully protected; advantage is to reduce the energy consumption of motor; improve the utilance of motor; also further reduce Harmonic Interference the useful life of enhancing motor to electrical network; the utility model has reduced use cost; improve cost performance, therefore, the utlity model has better suitable and the scope of application.
Description of drawings
Fig. 1 is the utility model perspective view;
Among the figure, 1 pedestal, 2A phase thyristor inlet wire connects row, the public connection row of 3 thyristors, 4A phase thyristor, the outlet of 5A phase thyristor connects row, 6A phase main contactor, 7 radiators.
Embodiment
Further specify the utility model in conjunction with the accompanying drawings and embodiments; as shown in Figure 1; the utility model is provided with the connection radiator of corresponding each phase by existing control protection switch, on the pedestal 1 that control protection switch one side enlarges thyristor constitutes; each thyristor connects corresponding phase main contactor through connecting row respectively; the control utmost point of each thyristor connects soft open pulse generation and power factor (PF) angle detection circuit in the control circuit, and the soft control circuit that opens is arranged on the circuit board of controlling protection switch.Only marked the annexation of A phase among Fig. 1, connect radiator 7 A phase thyristor 4 into and out of line end through A phase thyristor inlet wire connect row 2, the outlet of A phase thyristor connects row and connects A phase main contactor 6 respectively.
When soft formula control started by control with protection switch electrical equipment, the CPSR transmission mechanism was in on-position, and the brilliant lock module of three-phase obtains initial voltage, control thyristor angle of flow α, the start-up course of regulating output voltage, control motor by designed pattern.When starting process becomes direct-on-line starting, at this moment starting process is finished, built-in contact just can be closed, make the main electromagnetic coil or the permanent magnet driving device of bypass get electric work, the pull strap swing arm support that overcomes extension spring moves upward along camber line, connecting rod is dynamic and static double break contact in the connection main contactor that moves upward under the contained spring effect, thereby motor is moved under the XLCPSR Bypass Control; When stop sign sends, transmission mechanism is in open position, built-in contact just can be opened, make the main electromagnetic coil or the permanent magnet driving device dead electricity of bypass, arm support moves downward at the pulling force lower edge of extension spring camber line, connecting rod moves downward the power that overcomes contained spring with arm support, dynamic and static double break contact in the main contactor is disconnected, the three-phase thyristor module obtains initial voltage, control thyristor angle of flow α, stopped process by designed pattern is regulated output voltage, control motor realizes the motor smooth deceleration, stops.
Soft control circuit directly adopts the control circuit of existing soft initiator in the utility model; and be arranged on the circuit board of former control protection switch; the control circuit of soft initiator comprises the C8051FXXX microprocessor; coil in the output connection control circuit of the pulse generation that microprocessor connects and power factor (PF) angle detection circuit, parameter setting and show state circuit, microprocessor; the external instrument transformer of microprocessor carries out current detecting, and external power supply reaches voltage signal synchronously and detects.
Claims (2)
1, a kind of soft formula control and protection switch electrical equipment, mainly comprise base plate, pedestal, loam cake, main contactor on the pedestal, electromagnetic spool device or permanent magnet driving device, release, the control protection switch that the control circuit of transmission mechanism and external power supply constitutes, control circuit is to have the control power circuit, the signal condition treatment circuit, the CPU master chip of control voltage sampling circuit is core and peripheral circuit thereof, and comprise high-speed CPU, the release output circuit, the three-phase current sample circuit, what be connected with high-speed CPU is fixed on the interactive keyboard liquid crystal operation mechanism that covers, the both-way communication interface, it is characterized in that, fixedly install the thyristor that is connected with radiator of corresponding each phase on the pedestal that control protection switch one side enlarges, the advancing of each thyristor, leading-out terminal is respectively through connecting the upper and lower side that row connects corresponding phase main contactor; The electromagnetic spool device or the permanent magnet driving device of control protection switch first connect soft output of opening microprocessor in the control circuit; The control utmost point of each thyristor connects soft pulse generation and the power factor (PF) angle detection circuit that opens in the control circuit.
2, soft formula control according to claim 1 and protection switch electrical equipment is characterized in that the radiator of each thyristor and connection thereof is Chinese character pin-shaped setting on the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820039535XU CN201260141Y (en) | 2008-08-30 | 2008-08-30 | Soft start type control and protection switch electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820039535XU CN201260141Y (en) | 2008-08-30 | 2008-08-30 | Soft start type control and protection switch electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201260141Y true CN201260141Y (en) | 2009-06-17 |
Family
ID=40774378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820039535XU Expired - Lifetime CN201260141Y (en) | 2008-08-30 | 2008-08-30 | Soft start type control and protection switch electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201260141Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10414087B2 (en) | 2012-09-06 | 2019-09-17 | Ev Group E. Thallner Gmbh | Structure stamp, device and method of embossing |
-
2008
- 2008-08-30 CN CNU200820039535XU patent/CN201260141Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10414087B2 (en) | 2012-09-06 | 2019-09-17 | Ev Group E. Thallner Gmbh | Structure stamp, device and method of embossing |
| US10994470B2 (en) | 2012-09-06 | 2021-05-04 | Ev Group E. Thallner Gmbh | Structure stamp, device and method for embossing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090617 |
|
| CX01 | Expiry of patent term |