CN105871191A - Device and method for suppressing electrification impact current of three-phase voltage source type PWM rectifier - Google Patents
Device and method for suppressing electrification impact current of three-phase voltage source type PWM rectifier Download PDFInfo
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- CN105871191A CN105871191A CN201610367883.9A CN201610367883A CN105871191A CN 105871191 A CN105871191 A CN 105871191A CN 201610367883 A CN201610367883 A CN 201610367883A CN 105871191 A CN105871191 A CN 105871191A
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- circuit
- contactor
- pwm rectifier
- voltage source
- source type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a device and method for suppressing electrification impact current of a three-phase voltage source type PWM rectifier. The device comprises an input three-phase cable connected with a three-phase cable, the input three-phase cable is connected with a switch circuit, the switch circuit is connected with a contactor, and the contactor is connected with the input end of the three-phase voltage source type PWM rectifier. The device further comprises a controllable damping circuit connected with the contactor in parallel. The controllable damping circuit comprises three resistors R connected in parallel, each resistor R is connected with a relay M and then connected with one end of the contactor, and the other end of the contactor is connected with the three resistors. The device further comprises a detection control circuit, the detection input end of the detection control circuit is connected with a direct-current bus of the three-phase voltage source type PWM rectifier, and the two control output ends of the detection control circuit are connected with the contactor and the three relays M respectively.
Description
Technical field
The present invention relates to three phase mains field, particularly relate in a kind of suppression three-phase voltage source type PWM rectifier
The apparatus and method of surge electric current.
Background technology
Due to the intrinsic topology of voltage-source type PWM rectifier, its DC side needs and connects the electricity of a larger capacity
Container, and the load multi-parallel of its DC side has the filter capacitor of certain capacity, and these electric capacity are at work
Play the effect of stable busbar voltage, be the requisite part of system.But in PWM rectifier
During electricity, the existence of these capacitors can produce great dash current, exceedes the rated current of design
Capacity, damages circuit, it is also possible to damages IGBT solid state power devices such as () IPM, causes equipment irrecoverable
Damage.
Due to its parasitic individual diodes of internal meeting of technological factor of the solid state power devices such as IGBT, this can lead
Even if causing to the opening time extremely short for IGBT or completely closing, the three-phase commutation bridge of its body diode composition is also
Can turn on and charge bus capacitor, so the start-up circuit that a road is extra must be increased, and effectively suppression is opened
Streaming current.Until busbar voltage reaches threshold value, PWM rectifier enters back into normal operating conditions.
Summary of the invention
The problem existed according to prior art, the invention discloses a kind of suppression three-phase voltage source type PWM rectification
The device of device power-on impact current, including the input threephase cable being connected with threephase cable, described input three
Phase cable with control integrated circuit break-make, carry out the on-off circuit of circuit protection when crossing stream and be connected, described
On-off circuit is connected with contactor, the input phase of described contactor and three-phase voltage source type PWM rectifier
Connecting, this device also includes the controllable damping circuit being connected in parallel with contactor, described controllable damping circuit bag
Include three resistance R being arranged in parallel, described each resistance R connect respectively after relay M again with the one of contactor
End is connected, and the other end of described contactor and three resistance are connected, and this device also includes that detection controls electricity
Road, the detection input of described detection control circuit and the dc bus phase of three-phase voltage source type PWM rectifier
Connecting, two control output ends of described detection control circuit are connected with contactor and three relay M respectively
Connect.
Described on-off circuit uses air switch.
Described detection control circuit includes attenuator circuit, and the output of described attenuator circuit connects isolation computing
Amplifier, the output of described isolation operational amplifier is connected with analog-digital converter, described analog-digital converter
Being connected with digital signal processor, described digital signal processor is connected with output driving circuit.
A kind of method suppressing three-phase voltage source type PWM rectifier power-on impact current, including in the following manner:
S1；After manual ON on-off circuit, the 24V power work of three-phase voltage source type PWM rectifier, should
Device carries out initializing and decision logic, waits that outside power on signal enables；
S2；Carry out detection after receiving outside enable signal to judge, set detection voltage threshold N,
Wherein a represents: open this device, and b represents: be not turned on this device, and when dc bus side, voltage is higher than
The most do not enable the rush of current restraining device that powers on during threshold value N, otherwise enable electric current restraining device by damping electricity
Road is bus capacitor charging, until dc bus side magnitude of voltage is more than threshold value N, closes antihunt circuit, and this is followed by
Tentaculum adhesive, PWM rectifier enters normal operating conditions.
Owing to have employed technique scheme, a kind of suppression three-phase voltage source type PWM rectification that the present invention provides
The apparatus and method of device power-on impact current, suppress to power in Three-Phase PWM Rectifier start-up course electric current,
Constant charge electric current is in a default scope, and the bus capacitor voltage that measures to be checked reaches to set threshold value, disconnected
Opening controllable damping circuit, connect main circuit afterwards, system enters normal operating conditions.Assembly of the invention is
Fully controllable, whether application enables controllable damping circuit and is based on the dc bus side voltage decision of reality
's.Device uses two independent current channels simultaneously, and controllable damping circuit and operating circuit are at any time
Open and close that all can be independent, different combinations meets special operating mode needs, compared to antihunt circuit without
Method actively can only be by the scheme of contactor short circuit antihunt circuit with isolation of system, it is provided that greater flexibility.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments described in the application, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of this device；
Fig. 2 is the workflow diagram of this device；
Fig. 3 is the circuit theory diagrams detecting control circuit in the present invention.
Detailed description of the invention
For making technical scheme and advantage clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is carried out the most complete description:
A kind of device suppressing three-phase voltage source type PWM rectifier power-on impact current as shown in Figure 1, its
Including the input threephase cable 1 being connected with threephase cable, input threephase cable 1 with control integrated circuit break-make,
The on-off circuit 2 carrying out circuit protection when crossing stream is connected, and on-off circuit 2 is connected with contactor 3,
Contactor 3 is connected with the input of Three-Phase PWM Rectifier 4, and this device also includes in parallel with contactor 3
The controllable damping circuit 5 connected, described controllable damping circuit 5 includes three resistance R being arranged in parallel, described
Each resistance R connect relay M respectively after again one end with contactor 3 be connected, another of contactor 3
End is connected with three resistance, and this device also includes detecting control circuit 6, the inspection of described detection control circuit 6
Survey input to be connected with the dc bus of Three-Phase PWM Rectifier 4, two of described detection control circuit 6
Control output end is connected with contactor 3 and three relay M respectively.The resistance R that three are arranged in parallel exists
Fig. 1 is resistance R1, resistance R2, resistance R3.
On-off circuit 2 uses air switch.
As shown in Figure 3: detection control circuit 6 includes attenuator circuit 61, and the output of attenuator circuit 61 connects
Isolation operational amplifier 62, the output of isolation operational amplifier 62 is had to be connected with analog-digital converter 63,
Described analog-digital converter 63 is connected with digital signal processor 64, and described digital signal processor 64 is with defeated
Go out drive circuit 65 to be connected.
The effect of attenuator circuit 61: PWM rectifier busbar voltage 600V rated, design leaves allowance i.e.
Ceiling voltage 800V, the input voltage range of isolation operational amplifier is positive and negative 0.3V, owing to bus is not born
Voltage, the actually used input voltage range isolating operational amplifier in the design is 0～0.3V, and this is accomplished by
One attenuator circuit make as far as possible on the premise of not damaging isolation operational amplifier measurement commensurate in scope every
In amplifier input full scale, the voltage linear of i.e. 0～800V decays to 0～0.3V.
Isolation operational amplifier 62 isolated DC bus and detection control circuit 6, prevent bus bar side voltage x current
The noise jamming digital signal processor of sudden change generation and other low-voltage circuits, amplify the 0～0.3V of front end simultaneously
Voltage 8, again to 0～2.4V, mates the input range of analog-digital converter 63 as far as possible.
The analog signal that analog-digital converter 63 is used for isolation operational amplifier 62 transmits is converted into numeral
The data signal that signal processor is capable of identify that, and by digital protocol, transformation result is transmitted to data signal
Processor.
Digital signal processor 64 realizes PWM rectifier algorithm, this device control algolithm, and over-voltage and over-current and protects
Other logics such as protect.
The effect of output driving circuit 65: digital signal processor 64 not current driving ability itself,
Needed for control signal needs to can be only achieved contactor 3 or relay M by the output driving circuit 65 of isolation
Driving voltage electric current.
Relay M uses general electromagnetic relay, and resistance uses high-power aluminum casing resistor, owing to starting
In journey, part energy needs with the form consumption of heat on resistance R, so resistance R needs good dissipating
Heat, uses aluminum casing resistor and is fixed on the metal shell of PWM rectifier by resistance and can meet heat radiation need
Ask.After start-up course connects electromagnetic relay M, resistance R and PWM rectifier dc bus lateral capacitance
The equivalent RC circuit constituted can effectively suppress the electric current started, it is ensured that this electric current is a smoothed curve, suppression
Electric current and due to voltage spikes, charging current curve can be changed, according to RC by the resistance that change is different
The characteristic of circuit, resistance is big, and charging current is little, and the charging interval is long, and resistance is little, charging current
Greatly, the charging interval is short, and different resistances emphasize particularly on different fields, can be according to practical service environment flexible configuration.
As in figure 2 it is shown, suppression three-phase voltage source type PWM rectifier power-on impact current method, including with
Under type:
S1；After manual ON on-off circuit 2, the 24V power work of three-phase voltage source type PWM rectifier 4,
This device carries out initializing and decision logic, waits that outside power on signal enables；
S2；Carry out detection after receiving outside enable signal to judge, set detection voltage threshold N,
Wherein a represents: open this device, and b represents: be not turned on this device, and when dc bus side, voltage is higher than
The most do not enable the rush of current restraining device that powers on during threshold value N, otherwise enable electric current restraining device by damping electricity
Charging for bus capacitor in road 5, until dc bus side magnitude of voltage is more than threshold value N, closes antihunt circuit 5, this
The adhesive of rear contactor 3, PWM rectifier enters normal operating conditions.
Embodiment: be 500V by actual voltage threshold N, then
(a: open this device, b: be not turned on this device)
When dc bus side voltage does not enable starting current impact suppression dress higher than 500V (this parameter can be arranged)
Putting, otherwise enabling electric current restraining device is bus capacitor charging, until DC voltage value is more than 500V, this
Rear main contactor adhesive, the closedown of this device, Three-Phase PWM Rectifier enters normal operating conditions.
Due to the characteristic of antihunt circuit 5, first quick and back slow, electric capacity is charged to charge the most afterwards charging curve
Electric current is relatively small, by antihunt circuit 5, bus bar side voltage is brought up to the overlong time that 600V needs, with
If time by test sum up bus bar side voltage higher than 500V time open main current path, dash current also can be protected
Holding at reduced levels, summary considers, uses partition strategy can hold concurrently while suppression power-on impact current
Turn round and look at and reduce the startup time.
Start detection control circuit 6 to be integrated in the digital signal processor firmware of Three-Phase PWM Rectifier, with
Other assemblies of Three-Phase PWM Rectifier are coordinated to control by digital signal processor in the lump, it is to avoid independent control
The issuable instability problem of logic processed..
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (4)
1. the device suppressing three-phase voltage source type PWM rectifier power-on impact current, it is characterised in that:
Including the input threephase cable (1) being connected with threephase cable, described input threephase cable (1) is whole with control
Body connecting and disconnecting of the circuit, carry out the on-off circuit (2) of circuit protection when crossing stream and be connected, described on-off circuit (2)
Being connected with contactor (3), described contactor (3) is defeated with three-phase voltage source type PWM rectifier (4)
Entering end to be connected, this device also includes the controllable damping circuit (5) being connected in parallel with contactor (3), described
Controllable damping circuit (5) includes that three resistance R being arranged in parallel, described each resistance R connect relay respectively
After M, one end with contactor (3) is connected again, and the other end and three resistance of described contactor (3) are connected
Connect, this device also include detect control circuit (6), the detection input of described detection control circuit (6) with
The dc bus of three-phase voltage source type PWM rectifier (4) is connected, described detection control circuit (6)
Two control output ends are connected with contactor (3) and three relay M respectively.
A kind of suppression three-phase voltage source type PWM rectifier power-on impact current the most according to claim 1
Device, be further characterized in that: described on-off circuit (2) use air switch.
The dress of suppression three-phase voltage source type PWM rectifier power-on impact current the most according to claim 1
Put, be further characterized in that: described detection control circuit (6) includes attenuator circuit (61), described decay electricity
The output on road (61) connects isolation operational amplifier (62), described isolation operational amplifier (62)
Output is connected with analog-digital converter (63), described analog-digital converter (63) and digital signal processor
(64) being connected, described digital signal processor (64) is connected with output driving circuit (65).
4. suppress a suppressing method for the device of three-phase voltage source type PWM rectifier power-on impact current, its
It is characterised by: include in the following manner:
S1；After manual ON on-off circuit (2), the 24V electricity of three-phase voltage source type PWM rectifier (4)
Source works, and this device carries out initializing and decision logic, waits that outside power on signal enables；
S2；Carry out detection after receiving outside enable signal to judge, set detection voltage threshold N,
Wherein a represents: open this device, and b represents: be not turned on this device, and when dc bus side, voltage is higher than
The most do not enable the rush of current restraining device that powers on during threshold value N, otherwise enable electric current restraining device by damping electricity
Road (5) is bus capacitor charging, until dc bus side magnitude of voltage is more than threshold value N, closes antihunt circuit (5),
Hereafter contactor (3) adhesive, PWM rectifier enters normal operating conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367883.9A CN105871191A (en) | 2016-05-30 | 2016-05-30 | Device and method for suppressing electrification impact current of three-phase voltage source type PWM rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367883.9A CN105871191A (en) | 2016-05-30 | 2016-05-30 | Device and method for suppressing electrification impact current of three-phase voltage source type PWM rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105871191A true CN105871191A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610367883.9A Pending CN105871191A (en) | 2016-05-30 | 2016-05-30 | Device and method for suppressing electrification impact current of three-phase voltage source type PWM rectifier |
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| Country | Link |
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| CN (1) | CN105871191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459628A (en) * | 2018-09-21 | 2019-03-12 | 科德数控股份有限公司 | Predict the device of servo-driver failure |
| CN114295887A (en) * | 2021-12-22 | 2022-04-08 | 科德数控股份有限公司 | Power failure detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583405U (en) * | 2010-01-27 | 2010-09-15 | 北京信息科技大学 | Fault monitoring predicting system of motive power equipment |
| CN201966812U (en) * | 2011-01-27 | 2011-09-07 | 广州东芝白云菱机电力电子有限公司 | Converter based on novel precharge circuit |
| CN104333207A (en) * | 2014-11-18 | 2015-02-04 | 威海广泰空港设备股份有限公司 | Direct current power source device for photovoltaic inverter |
| CN205265512U (en) * | 2015-12-21 | 2016-05-25 | 北京合康亿盛变频科技股份有限公司 | High -voltage frequency changer |
| CN205811846U (en) * | 2016-05-30 | 2016-12-14 | 科德数控股份有限公司 | The device of suppression three-phase voltage source type PWM rectifier power-on impact current |
-
2016
- 2016-05-30 CN CN201610367883.9A patent/CN105871191A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583405U (en) * | 2010-01-27 | 2010-09-15 | 北京信息科技大学 | Fault monitoring predicting system of motive power equipment |
| CN201966812U (en) * | 2011-01-27 | 2011-09-07 | 广州东芝白云菱机电力电子有限公司 | Converter based on novel precharge circuit |
| CN104333207A (en) * | 2014-11-18 | 2015-02-04 | 威海广泰空港设备股份有限公司 | Direct current power source device for photovoltaic inverter |
| CN205265512U (en) * | 2015-12-21 | 2016-05-25 | 北京合康亿盛变频科技股份有限公司 | High -voltage frequency changer |
| CN205811846U (en) * | 2016-05-30 | 2016-12-14 | 科德数控股份有限公司 | The device of suppression three-phase voltage source type PWM rectifier power-on impact current |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459628A (en) * | 2018-09-21 | 2019-03-12 | 科德数控股份有限公司 | Predict the device of servo-driver failure |
| CN114295887A (en) * | 2021-12-22 | 2022-04-08 | 科德数控股份有限公司 | Power failure detection method |
| CN114295887B (en) * | 2021-12-22 | 2023-07-18 | 科德数控股份有限公司 | Power failure detection method |
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Application publication date: 20160817 |