CN107070310B - Asynchronous machine soft activator and method - Google Patents
Asynchronous machine soft activator and method Download PDFInfo
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- CN107070310B CN107070310B CN201710266267.9A CN201710266267A CN107070310B CN 107070310 B CN107070310 B CN 107070310B CN 201710266267 A CN201710266267 A CN 201710266267A CN 107070310 B CN107070310 B CN 107070310B
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- 239000012190 activator Substances 0.000 title claims abstract description 11
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 101
- 230000010363 phase shift Effects 0.000 claims abstract description 74
- 230000002093 peripheral effect Effects 0.000 claims abstract description 68
- 230000005611 electricity Effects 0.000 claims abstract description 43
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 101150108925 dxs2 gene Proteins 0.000 claims description 32
- 101150039194 dxs1 gene Proteins 0.000 claims description 31
- 239000003990 capacitor Substances 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000011084 recovery Methods 0.000 claims description 11
- 101000607645 Homo sapiens Ubiquilin-4 Proteins 0.000 claims description 7
- 102100039932 Ubiquilin-4 Human genes 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
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Abstract
The present invention provides a kind of asynchronous machine soft activator, it be used to control threephase asynchronous machine starting, it is characterised in that: including zero cross detection circuit module, power-switching circuit module, STM8 and peripheral circuit module, phase-shift pulse generation circuit module and control circuit of bidirectional thyristor module；After STM8 and its peripheral circuit module receive the zero cross signal that zero cross detection circuit module issues and the model selection control instruction that power-switching circuit module issues, generate phase-shift pulse signal, phase-shift pulse generation circuit module receives the phase-shift pulse signal of STM8 and its peripheral circuit module, and generate pulse control signal, the pulse control signal of control circuit of bidirectional thyristor module reception phase-shift pulse generation circuit module, and control threephase asynchronous machine starting, 380V three-phase electricity is transformed into 5V direct current by power-switching circuit module, and 5V direct current is transported to zero cross detection circuit module, in STM8 and peripheral circuit module and phase-shift pulse generation circuit module.
Description
Technical field
The present invention relates to asynchronous machine startings, and in particular to a kind of asynchronous machine soft activator and method.
Background technique
Ac three-phase asynchronous motor is because itself intrinsic some advantage, such as design of electrical motor are relatively simple for structure, same
Constant power lower volume and weight is relatively small, cheap and maintenance cost also relatively low feature, keeps it existing in actual industrial
It is widely used in.But asynchronous machine has the problems such as dash current is big on startup, opening when No Load Start
Streaming current is 4~7 times of rated current, and in bringing onto load, current value can be higher.
Therefore, it is necessary to improve to the prior art.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of asynchronous machine soft activators and method suitable for straight-bar machines.
Asynchronous machine soft activator be used to control threephase asynchronous machine starting, it is characterised in that: including zero passage detection electricity
Road module, power-switching circuit module, STM8 and peripheral circuit module, phase-shift pulse generation circuit module and bidirectional triode thyristor control
Circuit module processed；
The STM8 and its peripheral circuit module receive the zero cross signal that zero cross detection circuit module issues and power supply conversion
After the model selection control instruction that circuit module issues, phase-shift pulse signal is generated；
The phase-shift pulse generation circuit module receives the phase-shift pulse signal of STM8 and its peripheral circuit module, and generates
Pulse control signal；
The control circuit of bidirectional thyristor module receives the pulse control signal of phase-shift pulse generation circuit module, and controls
Threephase asynchronous machine starting processed；
380V three-phase electricity is transformed into 5V direct current by the power-switching circuit module, and 5V direct current is transported to zero passage
In detection circuit module, STM8 and peripheral circuit module and phase-shift pulse generation circuit module.
As the improvement to asynchronous machine soft activator of the invention:
The zero cross detection circuit module includes optocoupler U1, U4 and U6, fast recovery diode D1, D2 and D3 and resistance
R1, R2, R5, R6, R9 and R15；
The power-switching circuit module include power rectifier chip U12, power conversion chip U14, external transformer T1,
5 needle interface P2, polarity free capacitor C4 and polar capacitor C6, C7；
The STM8 and peripheral circuit module include STM8 chip U2,4 needle interface P3, LED light L1, resistance R4, R7, R20
With R34 and polarity free capacitor C1, C2 and C5；
The phase-shift pulse generation circuit module includes optocoupler U3, U5, U7, U9, U11 and U13, triode Q1, Q2 and Q3
And resistance R3, R11, R12, R16, R24, R25, R27, R32 and R33；
The control circuit of bidirectional thyristor module includes bidirectional triode thyristor Q4, Q5 and Q6, varistor CY1, CY2 and
CY3 and PCB weld tabs UAIN, UBIN, UCIN, UAOUT, UBOUT and UCOUT；
The connection structure of the zero cross detection circuit module is as follows:
After 1 port of 1 port of the optocoupler U1,1 port of optocoupler U4 and optocoupler U6 is separately connected resistance R1, R5 and R6
Labeled as the port DXS1, DXS2 and DXS3, the port DXS1, DXS2 and DXS3 respectively connects three-phase electricity all the way；2 ports of optocoupler U1 point
It is not connected with 2 ports of 2 ports of optocoupler U4 and optocoupler U6；
The fast recovery diode D1 anode is connected with 2 ports of optocoupler U1, and negative terminal is connected with resistance R1；Fast quick-recovery
Diode D2 anode is connected with 2 ports of optocoupler U4, and negative terminal is connected with resistance R5；Fast recovery diode D3 anode and optocoupler U6
2 ports be connected, negative terminal is connected with resistance R6；
3 ports of 3 ports of the optocoupler U1,3 ports of optocoupler U4 and optocoupler U6 are grounded respectively；4 ports of optocoupler U1,
4 ports of optocoupler U4 and 4 ports of optocoupler U6 are respectively labeled as the port UZero, VZero and WZero；UZero, VZero and
The port WZero passes through resistance R2, R9 and R15 respectively and connects+5V output port, then respectively with STM8 chip U2 11,12 and 13
Port is connected；
The connection structure of the power-switching circuit module is as follows:
The port A2_A of the 4 ports connection external transformer T1 of the power rectifier chip U12, power rectifier chip U12
3 ports connect 5 needle interface P2 2 ports, power rectifier chip U12 2 ports ground connection；The port B1_A of external transformer T1
It is connect with the port B1_B, the port B2_A is connect with the port B2_B；The port A1_A of external transformer T1 is connect with the port A1_B,
The port A2_A is connect with the port A2_B；The port B1_A of external transformer T1 is electrically connected with the port B1_B and three-phase；
The port A1_A of the 1 port connection external transformer T1 of the 5 needle interface P2,3 ports of 5 needle interface P2 meet+5V
Output port, 19 ports of the 4 ports connection STM8 chip U2 of 5 needle interface P2, the 5 ports ground connection of 5 needle interface P2；
2,4 ports of the power conversion chip U14 are grounded；3 ports of power conversion chip U14 and power rectifier chip
1 port of U12 connects；Polar capacitor C6 is just terminating 3 ports of power conversion chip U14, negativing ending grounding；Power conversion chip
The 1 port conduct+5V output port of U14；Polarity free capacitor C4 and polar capacitor C7 anode connect power conversion chip U14's respectively
1 port, negativing ending grounding；
The connection structure of the STM8 and peripheral circuit module is as follows:
9 ports of the STM8 chip U2 connect+5V output port；The both ends polarity free capacitor C5 connect STM8 chip U2's respectively
9 ports and ground connection；7 ports of STM8 chip U2 are grounded；4,18 ports of STM8 chip U2 connect 1,3 ends of 4 needle interface P3 respectively
Mouthful；2 ports of 4 needle interface P3 are grounded；4 ports of 4 needle interface P3 connect+5V output port；4 ports of STM8 chip U2 pass through electricity
Resistance R7 connects+5V output port；The both ends polarity free capacitor C1 connect 4 ports and the ground connection of STM8 chip U2 respectively；The 2 of STM8 chip U2
Port connects the negative terminal of LED light L1；LED light L1 anode connects+5V output port by resistance R4；8 ports of STM8 chip U2 connect nothing
Polar capacitor C2, polarity free capacitor C2 other end ground connection；11,12 and 13 ports of STM8 chip U2 be respectively labeled as UZero,
The port VZero and WZero, and it is separately connected 4 ports of 4 ports of optocoupler U1,4 ports of optocoupler U4 and optocoupler U6；STM8 core
14,15 and 16 ports of piece U2 are respectively labeled as the port UTrigger, VTrigger and WTrigger, and respectively with resistance R12,
R25 is connected with R33；19 and 20 ports of STM8 chip U2 are grounded after passing through resistance R20 and R34 respectively；The 19 of STM8 chip U2
Port label is the port AdjustIn, and connects 4 ports of 5 needle interface P2；
The connection structure of the phase-shift pulse generation circuit module is as follows:
1 port of the optocoupler U3 connects+5V output port by resistance R27；2 ports of optocoupler U3 and 1 end of optocoupler U5
Mouth is connected；2 ports of optocoupler U5 are connected with 3 ports of triode Q3；2 ports of triode Q3 are grounded；1 port of triode Q3
Connecting resistance R33；The resistance R33 other end is labeled as the port WTrigger, and is connected with 16 ports of STM8 chip U2；Optocoupler U5's
4 port labels are the port DXS3+, and are connected with 3 ports of bidirectional triode thyristor Q6；6 ports of optocoupler U5 connect 4 ends of optocoupler U3
Mouthful；The 6 port connecting resistance R32 of optocoupler U3；The resistance R32 other end is labeled as the port DXS3, and is electrically connected with three-phase all the way；
1 port of the optocoupler U7 connects+5V output port by resistance R16；2 ports of optocoupler U7 and 1 end of optocoupler U9
Mouth is connected；2 ports of optocoupler U9 are connected with 3 ports of triode Q2；2 ports of triode Q2 are grounded；1 port of triode Q2
Connecting resistance R25；The resistance R25 other end is labeled as the port VTrigger, and is connected with 15 ports of STM8 chip U2；Optocoupler U9's
4 port labels are the port DXS2+, and are connected with 3 ports of bidirectional triode thyristor Q5；6 ports of optocoupler U9 connect 4 ends of optocoupler U7
Mouthful；The 6 port connecting resistance R24 of optocoupler U7；The resistance R24 other end is labeled as the port DXS2, and is electrically connected with three-phase all the way；
1 port of the optocoupler U11 is by connecing+5V output port on resistance R3；2 ports of optocoupler U11 are with optocoupler U13's
1 port is connected；2 ports of optocoupler U13 are connected with 3 ports of triode Q1；2 ports of triode Q1 are grounded, and the 1 of triode Q1
Port connecting resistance R12, the resistance R12 other end is labeled as the port UTrigger, and is connected with 14 ports of STM8 chip U2；Optocoupler
4 port labels of U13 are the port DXS1+, and are connected with 3 ports of bidirectional triode thyristor Q4；6 ports of optocoupler U13 meet optocoupler U11
4 ports；The 6 port connecting resistance R11 of optocoupler U11；The resistance R11 other end be labeled as the port DXS1, and with three-phase electricity phase all the way
Even；
The connection structure of the control circuit of bidirectional thyristor module is as follows:
2 port labels of the bidirectional triode thyristor Q4 are the port DXS1, connection three-phase electricity all the way, and with external transformer T1
B1_A with PCB weld tabs UAIN be connected；1 port of bidirectional triode thyristor Q4 meets PCB weld tabs UAOUT；The both ends of varistor CY1 point
It is not connected with 1 and 2 ports of bidirectional triode thyristor Q4；3 port labels of bidirectional triode thyristor Q4 be the port DXS1+, and with phase shift arteries and veins
The resistance R11 rushed in generation circuit module is connected；
2 port labels of the bidirectional triode thyristor Q5 are the port DXS2, connection three-phase electricity all the way, and with external transformer T1
B2_A with PCB weld tabs UBIN be connected；1 port of bidirectional triode thyristor Q5 meets PCB weld tabs UBOUT；The both ends of varistor CY2 point
It is not connected with 1 and 2 ports of bidirectional triode thyristor Q5；3 port labels of bidirectional triode thyristor Q5 be the port DXS2+, and with phase shift arteries and veins
The resistance R24 rushed in generation circuit module is connected；
2 port labels of the bidirectional triode thyristor Q6 are the port DXS3, connection three-phase electricity all the way, and with PCB weld tabs UCIN
It is connected；1 port of bidirectional triode thyristor Q6 meets PCB weld tabs UCOUT；The both ends of varistor CY3 are respectively with bidirectional triode thyristor Q6's
1,2 ports are connected；3 port labels of bidirectional triode thyristor Q6 be the port DXS3+, and with the electricity in phase-shift pulse generation circuit module
R32 is hindered to be connected.
The present invention goes back while providing the method for asynchronous machine soft start, comprising the following steps:
1), STM8 and peripheral circuit module initialization refresh LED light L1 and show that state is to be always on state, pass through upper system
It unites and the minimum trigger angle, maximum Trigger Angle and touching of bidirectional triode thyristor Q4, Q5 and Q6 is manually set to STM8 and peripheral circuit module
Angle decreasing value is sent out, step 2) is then executed；
2) control instruction, power supply conversion electricity, are selected to the artificial input pattern of power-switching circuit module by Upper system
Output mode selects control instruction to STM8 and peripheral circuit module to road module again；STM8 and peripheral circuit module are selected according to mode
It selects control instruction and judges whether threephase asynchronous machine is self-starting mode；If model selection control instruction is less than 1V, to open certainly
Dynamic model formula executes step 3)；It is not self-starting mode if model selection control instruction is more than or equal to 1V, then is outside control
Mode executes step 8)；
3) it is fast blink state that, STM8 and peripheral circuit module, which refresh LED light L1 state, and Trigger Angle is given as setting
Maximum Trigger Angle executes step 4)；
4), STM8 and peripheral circuit module judge whether Trigger Angle is less than or equal to the minimum trigger angle of setting；Work as Trigger Angle
Less than or equal to setting minimum trigger angle when, execute step 7)；When Trigger Angle is greater than the minimum trigger angle of setting, step is executed
5)；
5), STM8 and peripheral circuit module reduce the numerical value of Trigger Angle according to the Trigger Angle decreasing value of setting, execute step
6)；
6), zero cross detection circuit module detection 380V three-phase is electrically generated zero cross signal and is transferred to STM8 and peripheral circuit mould
Block, STM8 and peripheral circuit module generate corresponding phase-shift pulse signal according to zero cross signal and Trigger Angle and are transferred to phase-shift pulse
Generation circuit module executes step 4) again；
7) current Trigger Angle, is kept, it is to be always on state, phase shift arteries and veins that STM8 and peripheral circuit module, which refresh LED light L1 state,
It rushes generation circuit module and exports pulse control signal and give control circuit of bidirectional thyristor module, control circuit of bidirectional thyristor module
Threephase asynchronous machine start completion is controlled, is terminated；
8) it is to flash state at a slow speed that, STM8 and peripheral circuit module, which refresh LED light L1 state, again detection pattern selection control
System instruction executes step 9) if model selection control instruction is less than or equal to 1V；If model selection control instruction is greater than
1V executes step 10)；
9), Trigger Angle is given as the minimum trigger angle of setting by STM8 and peripheral circuit module, executes step 11)；
10), STM8 and peripheral circuit module execute step according to the given Trigger Angle of the size of model selection control instruction
11)；
11), zero cross detection circuit module detection 380V three-phase is electrically generated zero cross signal and is transferred to STM8 and peripheral circuit mould
Block, STM8 and peripheral circuit module generate phase-shift pulse signal according to zero cross signal and Trigger Angle and are transferred to phase-shift pulse generation electricity
Road module, phase-shift pulse generation circuit module exports pulse control signal and gives control circuit of bidirectional thyristor module, two-way controllable
Silicon control circuit module controls threephase asynchronous machine work, executes step 8) again.
The invention has the advantages that the problem big for ac three-phase asynchronous motor starting current, devises a kind of suitable use
In the asynchronous machine soft start on straight-bar machines, have the characteristics that high pressure low current, low cost, high reliablity, is suitble to frequent starting different
Walk the occasions such as motor.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 is the overall structure block diagram of asynchronous machine soft activator of the present invention；
Fig. 2 is the circuit diagram of zero cross detection circuit module 1 in Fig. 1；
Fig. 3 is the circuit diagram of power-switching circuit module 2 in Fig. 1；
Fig. 4 is STM8 and its circuit diagram of peripheral circuit module 3 in Fig. 1；
Fig. 5 is the circuit diagram of phase-shift pulse generation circuit module 4 in Fig. 1；
Fig. 6 is the circuit diagram of control circuit of bidirectional thyristor module 5 in Fig. 1；
Fig. 7 is the implementation flow chart of the method for asynchronous machine soft start of the present invention.
Specific embodiment
The present invention is described further combined with specific embodiments below, but protection scope of the present invention is not limited in
This.
Embodiment 1, asynchronous machine soft activator be used to control the starting of threephase asynchronous machine 6 as shown in figs. 1-7, including
Zero cross detection circuit module 1, power-switching circuit module 2, STM8 and its peripheral circuit module 3, phase-shift pulse generation circuit mould
Block 4 and control circuit of bidirectional thyristor module 5.
Zero cross detection circuit module 1 detects 380V three-phase electricity and generates zero cross signal, and export zero cross signal to STM8 and its
Peripheral circuit module 3；
Control instruction, power-switching circuit module 2 are selected to 2 input pattern of power-switching circuit module by Upper system
Model selection control instruction is output to STM8 and its peripheral circuit module 3；
STM8 and its peripheral circuit module 3 generate phase-shift pulse signal according to zero cross signal and model selection control instruction,
And phase-shift pulse signal is exported to phase-shift pulse generation circuit module 4；
Phase-shift pulse generation circuit module 4 generates pulse control signal according to phase-shift pulse signal, and exports pulse control
To control circuit of bidirectional thyristor module 5, control circuit of bidirectional thyristor module 5 controls threephase asynchronous machine 6 and starts signal.
380V three-phase electricity is transformed into 5V direct current by power-switching circuit module 2, and by 5V direct current be transported to STM8 and
It powers in peripheral circuit module 3, zero cross detection circuit module 1 and phase-shift pulse generation circuit module 4.
380V three-phase electricity is delivered to phase-shift pulse generation circuit module 4 and control circuit of bidirectional thyristor module 5 is powered, and moves
Phase pulse-generating circuit module 4 is powered simultaneously by 5V powered by direct current and 380V three-phase electricity.
380V three-phase electricity is changed into pulse control signal by phase-shift pulse generation circuit module 4.
The present invention is discussed in detail below with reference to the circuit diagram of modules:
As shown in Fig. 2, zero cross detection circuit module 1 is by optocoupler U1, U4 and U6, diode D1, D2 and D3 and resistance R1,
R2, R5, R6, R9 and R15 composition.
1 port of 1 port of optocoupler U1,1 port of optocoupler U4 and optocoupler U6 marks after being separately connected resistance R1, R5 and R6
For the port DXS1, DXS2 and DXS3, the port DXS1, DXS2 and DXS3 respectively connects three-phase electricity all the way；2 ports of optocoupler U1 respectively with
2 ports of optocoupler U4 are connected with 2 ports of optocoupler U6；
Fast recovery diode D1 anode is connected with 2 ports of optocoupler U1, and negative terminal is connected with resistance R1；Fast two pole of quick-recovery
Pipe D2 anode is connected with 2 ports of optocoupler U4, and negative terminal is connected with resistance R5；The 2 of fast recovery diode D3 anode and optocoupler U6
Port is connected, and negative terminal is connected with resistance R6；
3 ports of 3 ports of optocoupler U1,3 ports of optocoupler U4 and optocoupler U6 are grounded respectively；4 ports of optocoupler U1, optocoupler
4 ports of U4 and 4 ports of optocoupler U6 are respectively labeled as the port UZero, VZero and WZero, the end UZero, VZero and WZero
Mouthful+5V output port is connect by resistance R2, R9 and R15 respectively, then respectively with 11, the 12 and 13 port phases of STM8 chip U2
Even；
Resistance R1, R5 and R6 are plug-in unit chromatic circle resistance.
The course of work of the zero cross detection circuit module 1 is as follows:
When DXS1 voltage is positive, optocoupler U1 conducting, the zero cross signal UZero of output is high level；When DXS1 electricity
When pressure is negative, optocoupler U1 is closed, and the zero cross signal UZero of output is low level；The port UZero exports zero cross signal
11 ports of UZero to STM8 chip U2；
When DXS2 voltage is positive, optocoupler U4 conducting, the zero cross signal VZero of output is high level；When DXS2 electricity
When pressure is negative, optocoupler U4 is closed, and the zero cross signal VZero of output is low level；The port VZero exports zero cross signal
12 ports of VZero to STM8 chip U2；
When DXS3 voltage is positive, optocoupler U6 conducting, the zero cross signal WZero of output is high level；When DXS2 electricity
When pressure is negative, optocoupler U6 is closed, and the zero cross signal WZero of output is low level.The port WZero exports zero cross signal
13 ports of WZero to STM8 chip U2；
Zero cross signal includes UZero, VZero and WZero, and when 380V three-phase electricity is timing, zero cross signal is high level, when
When 380V three-phase electricity is negative, zero cross signal is low level.
As shown in figure 3, power-switching circuit module 2 is by power rectifier chip U12, power conversion chip U14, external transformation
Device T1,5 needle interface P2, polarity free capacitor C4 and polar capacitor C6 and C7 composition.
The port A2_A of the 4 ports connection external transformer T1 of power rectifier chip U12,3 ends of power rectifier chip U12
2 ports of 5 needle interface P2 of mouth connection, the 2 ports ground connection of power rectifier chip U12；
The port A1_A of the 1 port connection external transformer T1 of 5 needle interface P2,3 ports of 5 needle interface P2 connect+5V output
4 ports ports of port, 5 needle interface P2 are labeled as the port AdjustIn, and connect 19 ports of STM8 chip U2,5 needle interfaces
5 ports of P2 are grounded；The port B1_A of external transformer T1 is connect with the port B1_B, and the port B2_A is connect with the port B2_B；Outside
The port A1_A for meeting transformer T1 is connect with the port A1_B, and the port A2_A is connect with the port A2_B, the B1_A of external transformer T1
Port is electrically connected with the port B1_B and three-phase.
2,4 ports of power conversion chip U14 are grounded；3 ports of power conversion chip U14 and power rectifier chip U12
1 port connection；Polar capacitor C6 is just terminating 3 ports of power conversion chip U14, negativing ending grounding；Power conversion chip U14's
1 port conduct+5V output port；Polarity free capacitor C4 and polar capacitor C7 anode connect 1 end of power conversion chip U14 respectively
Mouthful, negativing ending grounding；
The course of work of power-switching circuit module 2 is as follows:
Control instruction is selected to the 4 port input patterns of 5 needle interface P2 by Upper system, then is transferred to STM8 chip U2
19 ports；Model selection control instruction is external given voltage, by not having processed, model selection control when 5 needle interface P2
System instruction is 0-5V.
380V three-phase electricity is converted to the alternating current of 8.3V by external transformer T1, is input to power rectifier chip U12's
3,4 port, direct current (1, the 2 of power rectifier chip U12 that the AC rectification of 8.3V is 11.8V by power rectifier chip U12
Port output), 3,2 (4) ports of power conversion chip U14 are input to, power conversion chip U14 converts the rectification of 11.8V
It is changed to the direct current of+5V (1 port of power conversion chip U14 exports).
As shown in figure 4, STM8 and peripheral circuit module 3 be by STM8 chip U2,4 needle interface P3, LED light L1, resistance R4,
R7, R20 and R34 and polarity free capacitor C1, C2 and C5 composition；STM8 chip U2 can use STM8S103F3P6 chip, but
It is without being limited thereto；
9 ports of STM8 chip U2 connect+5V output port；The both ends polarity free capacitor C5 connect 9 ends of STM8 chip U2 respectively
Mouth and ground connection；7 ports of STM8 chip U2 are grounded；4,18 ports of STM8 chip U2 connect 1,3 ports of 4 needle interface P3 respectively；4
2 ports of needle interface P3 are grounded；4 ports of 4 needle interface P3 connect+5V output port；1 port of 4 needle interface P3 passes through resistance R7
Connect+5V output port；The both ends polarity free capacitor C1 connect 4 ports and the ground connection of STM8 chip U2 respectively；2 ports of STM8 chip U2
Connect the negative terminal of LED light L1；LED light L1 anode connects+5V output port by resistance R4；8 ports of STM8 chip U2 connect nonpolarity
Capacitor C2, polarity free capacitor C2 other end ground connection；11,12 and 13 ports of STM8 chip U2 are respectively labeled as UZero, VZero
With the port WZero, and it is separately connected 4 ports of 4 ports of optocoupler U1,4 ports of optocoupler U4 and optocoupler U6；STM8 chip U2's
14,15 and 16 ports are respectively labeled as the port UTrigger, VTrigger and WTrigger, and respectively with resistance R12, R25 and
R33 is connected；19 and 20 ports of STM8 chip U2 are grounded after passing through resistance R20 and R34 respectively；It marks 19 ports of STM8 chip U2
It is denoted as the port AdjustIn, and connects 4 ports of 5 needle interface P2；1,3,5,6,10 and 17 ports of STM8 chip U2 are hanging；
The course of work of STM8 and peripheral circuit module 3 is as follows:
4 ports of 5 needle interface P2 select control instruction, model selection control to the 19 port input patterns of STM8 chip U2
Instruction is external given voltage, and STM8 chip U2 judges the model selection control instruction inputted from 19 ports of STM8 chip U2,
When model selection control instruction is lower than 1V, threephase asynchronous machine 6 is self-starting mode, when model selection control instruction is higher than 1V
When threephase asynchronous machine 6 be external control model；
STM8 chip U2 calculates corresponding Trigger Angle for using the rising edge of zero cross signal and failing edge as time reference zero point
The time delay length of (Trigger Angle that Trigger Angle refers to bidirectional triode thyristor Q4, Q5 and Q6)；UTrigger, VTrigger and
WTrigger is initially 0 using corresponding zero cross signal as reference zero for phase-shift pulse signal, through delay after a period of time
It is positive after (delay time is determined by the size of Trigger Angle), until next zero crossing (become 0 after next zero point,
It then is again time-delay)；
The delay time of phase-shift pulse signal and Trigger Angle are linear, are calculated by STM8 chip U2, Trigger Angle
Bigger delay time is longer；
LED light L1 booting is always on, and self-starting mode fast blink state, self-starting completion are always on and external control model is slow
Speed flash sparkles state.
Zero cross detection circuit module 1 exports zero cross signal (UZero, VZero and WZero), by the 11 of STM8 chip U2,
12 and 13 ports are input to STM8 chip U2；
STM8 chip U2 generates corresponding phase-shift pulse signal according to zero cross signal and model selection control instruction
(UTrigger, VTrigger and WTrigger)；
14 ports of STM8 chip U2 export phase-shift pulse signal UTrigger, are input to through resistance R12 and triode Q1
2 ports of optocoupler U13；
15 ports of STM8 chip U2 export phase-shift pulse signal VTrigger, are input to through resistance R25 and triode Q2
2 ports of optocoupler U9；
16 ports of STM8 chip U2 export phase-shift pulse signal WTrigger, are input to through resistance R27 and triode Q3
2 ports of optocoupler U5.
Above-described 4 needle interface P3 is used to download program, the rising edge and failing edge of zero cross signal to STM8 chip U2
It is the reference zero of computing relay time.
As shown in figure 5, phase-shift pulse generation circuit module 4 is by optocoupler U3, U5, U7, U9, U11 and U13, triode Q1, Q2
It is formed with Q3 and resistance R3, R11, R12, R16, R24, R25, R27, R32 and R33.
1 port of optocoupler U3 connects+5V output port by resistance R27；1 port phase of 2 ports of optocoupler U3 and optocoupler U5
Even；2 ports of optocoupler U5 are connected with 3 ports of triode Q3；2 ports of triode Q3 are grounded；1 port of triode Q3 connects electricity
Hinder R33；The resistance R33 other end is labeled as the port WTrigger, and is connected with 16 ports of STM8 chip U2；4 ends of optocoupler U5
Mouth is labeled as the port DXS3+, and is connected with 3 ports of bidirectional triode thyristor Q6；6 ports of optocoupler U5 connect 4 ports of optocoupler U3；Light
The 6 port connecting resistance R32 of coupling U3；The resistance R32 other end is labeled as the port DXS3, and is electrically connected with three-phase all the way；
1 port of optocoupler U7 connects+5V output port by resistance R16；1 port phase of 2 ports of optocoupler U7 and optocoupler U9
Even；2 ports of optocoupler U9 are connected with 3 ports of triode Q2；2 ports of triode Q2 are grounded；1 port of triode Q2 connects electricity
Hinder R25；The resistance R25 other end is labeled as the port VTrigger, and is connected with 15 ports of STM8 chip U2；4 ends of optocoupler U9
Mouth is labeled as the port DXS2+, and is connected with 3 ports of bidirectional triode thyristor Q5；6 ports of optocoupler U9 connect 4 ports of optocoupler U7；Light
The 6 port connecting resistance R24 of coupling U7；The resistance R24 other end is labeled as the port DXS2, and is electrically connected with three-phase all the way；
1 port of optocoupler U11 is by connecing+5V output port on resistance R3；2 ports of optocoupler U11 and 1 end of optocoupler U13
Mouth is connected；2 ports of optocoupler U13 are connected with 3 ports of triode Q1；2 ports of triode Q1 are grounded；1 end of triode Q1
Mouth connecting resistance R12；The resistance R12 other end is labeled as the port UTrigger, and is connected with 14 ports of STM8 chip U2；Optocoupler
4 port labels of U13 are the port DXS1+, and are connected with 3 ports of bidirectional triode thyristor Q4；6 ports of optocoupler U13 meet optocoupler U11
4 ports；The 6 port connecting resistance R11 of optocoupler U11；The resistance R11 other end be labeled as the port DXS1, and with three-phase electricity phase all the way
Even；
Triode Q1, Q2 and Q3 are NPN triode.
Phase-shift pulse generation circuit 4 courses of work of module are as follows:
Pulse control signal includes DXS1+, DXS2+ and DXS3+；
When WTrigger is timing, optocoupler U5 and U3 conducting, the amplitude phase of pulse control signal DXS3+ and three-phase electricity DXS3
Together；When WTrigger is zero, optocoupler U5 and U3 are closed, and pulse control signal DXS3+ is zero；The port DXS3+ exports pulse control
3 ports of signal DXS3+ processed to bidirectional triode thyristor Q6；
Whether phase-shift pulse signal WTrigger control triode Q3 is connected, to control whether optocoupler U5 and U3 are connected.
When VTrigger is timing, optocoupler U9 and U7 conducting, the amplitude phase of pulse control signal DXS2+ and three-phase electricity DXS2
Together；When VTrigger is zero, optocoupler U9 and U7 are closed, and pulse control signal DXS2+ is zero；The port DXS2+ exports pulse control
3 ports of signal DXS2+ processed to bidirectional triode thyristor Q5；
Whether phase-shift pulse signal VTrigger control triode Q2 is connected, to control whether optocoupler U9 and U7 are connected.
When UTrigger is timing, optocoupler U13 and U11 conducting, the amplitude of pulse control signal DXS1+ and three-phase electricity DXS1
It is identical；When UTrigger is zero, optocoupler U13 and U11 are closed, and pulse control signal DXS1+ is zero；The port DXS1+ exports arteries and veins
3 ports of punching control signal DXS1+ to bidirectional triode thyristor Q4；
Whether phase-shift pulse signal UTrigger control triode Q1 is connected, to control whether optocoupler U13 and U11 lead
It is logical.
Three-phase electricity becomes pulse control signal, phase-shift pulse generation circuit module 4 by phase-shift pulse generation circuit module 4
It is electrically connected with three-phase, generates the phase-shift pulse signal of a high voltage amplitude to control control circuit of bidirectional thyristor module 5
Switch.
As shown in fig. 6, control circuit of bidirectional thyristor module 5 is by bidirectional triode thyristor Q4, Q5 and Q6, varistor CY1,
CY2 and CY3 and PCB weld tabs UAIN, UBIN, UCIN, UAOUT, UBOUT and UCOUT composition.
2 port labels of bidirectional triode thyristor Q4 are the port DXS1, and the B1_A and PCB weld tabs UAIN with external transformer T1
It is connected；1 port of bidirectional triode thyristor Q4 meets PCB weld tabs UAOUT；The both ends of varistor CY1 respectively with bidirectional triode thyristor Q4 1
It is connected with 2 ports；3 port labels of bidirectional triode thyristor Q4 be the port DXS1+, and in phase-shift pulse generation circuit module 4
Resistance R11 is connected；
2 port labels of bidirectional triode thyristor Q5 are the port DXS2, and the B2_A and PCB weld tabs UBIN with external transformer T1
It is connected；1 port of bidirectional triode thyristor Q5 meets PCB weld tabs UBOUT；The both ends of varistor CY2 respectively with bidirectional triode thyristor Q5 1
It is connected with 2 ports；3 port labels of bidirectional triode thyristor Q5 be DXS2+, and with the resistance in phase-shift pulse generation circuit module 4
R24 is connected；
2 port labels of bidirectional triode thyristor Q6 are the port DXS3, and are connected with PCB weld tabs UCIN；The 1 of bidirectional triode thyristor Q6
Port meets PCB weld tabs UCOUT；The both ends of varistor CY3 are connected with 1,2 ports of bidirectional triode thyristor Q6 respectively；It is two-way controllable
3 port labels of silicon Q6 are the port DXS3+, and are connected with the resistance R32 in phase-shift pulse generation circuit module 4；
PCB weld tabs UAOUT, PCB weld tabs UBOUT and PCB weld tabs UCOUT respectively with U, V and W phase of threephase asynchronous machine 6
Even；
The port UTrigger, VTrigger and WTrigger is signal input part (phase-shift pulse signal)；DXS1, DXS2 and
The port DXS3 is signal input part (380V voltage signal)；The port DXS1+, DXS2+ and DXS3+ is signal output end (pulse control
Signal processed).
The working principle of control circuit of bidirectional thyristor module 5 is as follows:
Bidirectional triode thyristor Q4 is controlled by pulse control signal DXS1+, double when pulse control signal DXS1+ is high level
It is connected to silicon-controlled Q4；When pulse control signal DXS1+ is low level, bidirectional triode thyristor Q4 is closed；As bidirectional triode thyristor Q4
When conducting, the voltage of PCB weld tabs UAOUT is equal to the voltage of PCB weld tabs UAIN, when bidirectional triode thyristor Q4 is closed, PCB weld tabs
The voltage of UAOUT is zero；
Bidirectional triode thyristor Q5 is controlled by pulse control signal DXS2+, double when pulse control signal DXS2+ is high level
It is connected to silicon-controlled Q5；When pulse control signal DXS2+ is low level, bidirectional triode thyristor Q5 is closed；As bidirectional triode thyristor Q5
When conducting, the voltage of PCB weld tabs UBOUT is equal to the voltage of PCB weld tabs UBIN, when bidirectional triode thyristor Q5 is closed, PCB weld tabs
The voltage of UBOUT is zero；
Bidirectional triode thyristor Q6 is controlled by pulse control signal DXS3+, double when pulse control signal DXS3+ is high level
It is connected to silicon-controlled Q6；When pulse control signal DXS3+ is low level, bidirectional triode thyristor Q6 is closed；As bidirectional triode thyristor Q6
When conducting, the voltage of PCB weld tabs UCOUT is equal to the voltage of PCB weld tabs UCIN, when bidirectional triode thyristor Q6 is closed, PCB weld tabs
The voltage of UCOUT is zero；
What the size for changing the Trigger Angle of bidirectional triode thyristor Q4, Q5 and Q6 can change silicon-controlled Q4, Q5 and Q6 opens journey
Degree, so that just the output voltage of changeable control circuit of bidirectional thyristor module 5, Trigger Angle pass through artificial settings.Artificially setting
Timing can set the angular range of Trigger Angle, that is, set maximum Trigger Angle and minimum trigger angle.
Control circuit of bidirectional thyristor module 5 is equivalent to switch, and control threephase asynchronous machine 6 is logical with 380V three-phase electricity
It is disconnected.Whether there is or not 380V three-phase electricities to flow into threephase asynchronous machine 6 for the control of control circuit of bidirectional thyristor module 5, so that control three is different
Walk the starting of motor 6.
As shown in fig. 7, actual step of the invention is as follows:
System initialization after 1), being switched on, STM8 and the initialization of peripheral circuit module 3 (the GPIO initialization of STM8 chip U2,
ADC initialization, timer initialization and parameter initialization), refresh LED light L1 and show that state is to be always on state, passes through upper system
It unites and angular range (the i.e. minimum touching of the Trigger Angle of bidirectional triode thyristor Q4, Q5 and Q6 is manually set to STM8 and peripheral circuit module 3
Send out angle and maximum Trigger Angle) and Trigger Angle decreasing value, then execute step 2)；
It 2) is, that input pattern selects control instruction (the given electricity in outside to 2 people of power-switching circuit module by Upper system
Pressure), output mode selects control instruction to STM8 and peripheral circuit module 3 to power-switching circuit module 2 again；STM8 and periphery electricity
Road module 3 judges whether threephase asynchronous machine 6 is self-starting mode according to model selection control instruction；If model selection controls
Instruction is less than 1V, is self-starting mode, executes step 3)；It is not self-starting if model selection control instruction is more than or equal to 1V
Mode is then external control model, executes step 8)；
3) it is fast blink state that, STM8 and peripheral circuit module 3, which refresh LED light L1 state, and Trigger Angle is given as setting
Maximum Trigger Angle, execute step 4)；
4), STM8 and peripheral circuit module 3 judge whether Trigger Angle is less than or equal to the minimum trigger angle of setting；Work as Trigger Angle
Less than or equal to setting minimum trigger angle when, execute step 7)；When Trigger Angle is greater than the minimum trigger angle of setting, step is executed
5)；
5), the numerical value that STM8 and peripheral circuit module 3 reduce Trigger Angle according to the Trigger Angle decreasing value of setting (reduces every time
1.2 degree, can artificially change), execute step 6)；
6), the detection of zero cross detection circuit module 1 380V three-phase is electrically generated zero cross signal and is transferred to STM8 and peripheral circuit mould
Block 3, STM8 and peripheral circuit module 3 generate corresponding phase-shift pulse signal according to zero cross signal and Trigger Angle and are transferred to phase shift arteries and veins
Rush generation circuit module 4 (by change bidirectional triode thyristor Q4, Q5 and Q6 Trigger Angle size come change bidirectional triode thyristor Q4,
Q5's and Q6 opens degree to which the output voltage of control circuit of bidirectional thyristor module 5 just be adjusted), step is executed again
4)；
7), STM8 and peripheral circuit module 3 keep current Trigger Angle, and refreshing LED light L1 state is to be always on state, phase shift arteries and veins
It rushes generation circuit module 4 and exports pulse control signal to control circuit of bidirectional thyristor module 5, control circuit of bidirectional thyristor mould
Block 5 controls 6 start completion of threephase asynchronous machine, terminates；
8) it is to flash state at a slow speed that, STM8 and peripheral circuit module 3, which refresh LED light L1 state, and detection pattern selects again
Control instruction executes step 9) if model selection control instruction is less than or equal to 1V；If model selection control instruction is greater than
1V executes step 10)；
9), Trigger Angle is given as the minimum trigger angle of setting by STM8 and peripheral circuit module 3, executes step 11)；
10), STM8 and peripheral circuit module 3 according to the size of model selection control instruction give Trigger Angle (Trigger Angle with
Model selection control instruction linear change, model selection control instruction is bigger, and Trigger Angle is bigger, and model selection control instruction is 5V
When, Trigger Angle is given as the maximum Trigger Angle of setting), execute step 11)；
11), the detection of zero cross detection circuit module 1 380V three-phase is electrically generated zero cross signal and is transferred to STM8 and peripheral circuit mould
Block 3, STM8 and peripheral circuit module 3 generate phase-shift pulse signal according to zero cross signal and Trigger Angle and are transferred to phase-shift pulse generation
Circuit module 4, phase-shift pulse generation circuit module 4 export pulse control signal to control circuit of bidirectional thyristor module 5, two-way
Silicon controlled control circuit module 5 controls threephase asynchronous machine 6 and works, and executes step 8) again；
Trigger Angle be in self-starting mode it is given by man, determined under external control model by model selection control instruction
It is fixed.Under external control model, the starting of threephase asynchronous machine 6 is controlled by model selection control instruction given by man completely,
Model selection control instruction can be started by changing Trigger Angle by threephase asynchronous machine 6, and threephase asynchronous machine 6 can also be allowed to exist
It works under non-total pressure, this belongs to routine techniques.
Finally, it should be noted that the above various embodiments is only used to illustrate the technical scheme of the present invention, rather than its limitations；To the greatest extent
Invention is explained in detail referring to each embodiment is signed for pipe, those skilled in the art should understand that: its according to
Can so modify to technical solution documented by each embodiment in preceding place, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, each example scheme of invention that it does not separate the essence of the corresponding technical solution
Range.
Claims (2)
1. asynchronous machine soft activator be used to control threephase asynchronous machine (6) starting, it is characterised in that: including zero passage detection
Circuit module (1), power-switching circuit module (2), STM8 and peripheral circuit module (3), phase-shift pulse generation circuit module (4)
With control circuit of bidirectional thyristor module (5)；
The STM8 and peripheral circuit module (3) receive the zero cross signal that zero cross detection circuit module (1) issues and power supply conversion
After the model selection control instruction that circuit module (2) issues, phase-shift pulse signal is generated；
The phase-shift pulse generation circuit module (4) receives the phase-shift pulse signal of STM8 and peripheral circuit module (3), and generates
Pulse control signal；
The control circuit of bidirectional thyristor module (5) receives the pulse control signal of phase-shift pulse generation circuit module (4), and
Control threephase asynchronous machine (6) starting；
380V three-phase electricity is transformed into 5V direct current by the power-switching circuit module (2), and 5V direct current is transported to zero passage
In detection circuit module (1), STM8 and peripheral circuit module (3) and phase-shift pulse generation circuit module (4)；
The zero cross detection circuit module (1) includes optocoupler U1, U4 and U6, fast recovery diode D1, D2 and D3 and resistance
R1, R2, R5, R6, R9 and R15；
The power-switching circuit module (2) includes power rectifier chip U12, power conversion chip U14, external transformer T1,5
Needle interface P2, polarity free capacitor C4 and polar capacitor C6, C7；
The STM8 and peripheral circuit module (3) include STM8 chip U2,4 needle interface P3, LED light L1, resistance R4, R7, R20 and
R34 and polarity free capacitor C1, C2 and C5；
The phase-shift pulse generation circuit module (4) includes optocoupler U3, U5, U7, U9, U11 and U13, triode Q1, Q2 and Q3 with
And resistance R3, R11, R12, R16, R24, R25, R27, R32 and R33；
The control circuit of bidirectional thyristor module (5) includes bidirectional triode thyristor Q4, Q5 and Q6, varistor CY1, CY2 and CY3
And PCB weld tabs UAIN, UBIN, UCIN, UAOUT, UBOUT and UCOUT；
The connection structure of the zero cross detection circuit module (1) is as follows:
1 port of 1 port of the optocoupler U1,1 port of optocoupler U4 and optocoupler U6 marks after being separately connected resistance R1, R5 and R6
For the port DXS1, DXS2 and DXS3, the port DXS1, DXS2 and DXS3 respectively connects three-phase electricity all the way；2 ports of optocoupler U1 respectively with
2 ports of optocoupler U4 are connected with 2 ports of optocoupler U6；
The fast recovery diode D1 anode is connected with 2 ports of optocoupler U1, and negative terminal is connected with resistance R1；Fast two pole of quick-recovery
Pipe D2 anode is connected with 2 ports of optocoupler U4, and negative terminal is connected with resistance R5；The 2 of fast recovery diode D3 anode and optocoupler U6
Port is connected, and negative terminal is connected with resistance R6；
3 ports of 3 ports of the optocoupler U1,3 ports of optocoupler U4 and optocoupler U6 are grounded respectively；4 ports of optocoupler U1, optocoupler
4 ports of U4 and 4 ports of optocoupler U6 are respectively labeled as the port UZero, VZero and WZero；The end UZero, VZero and WZero
Mouthful+5V output port is connect by resistance R2, R9 and R15 respectively, then respectively with 11, the 12 and 13 port phases of STM8 chip U2
Even；
The connection structure of the power-switching circuit module (2) is as follows:
The port A2_A of the 4 ports connection external transformer T1 of the power rectifier chip U12,3 ends of power rectifier chip U12
2 ports of 5 needle interface P2 of mouth connection, the 2 ports ground connection of power rectifier chip U12；The port B1_A of external transformer T1 and B1_
The connection of the port B, the port B2_A is connect with the port B2_B；The port A1_A of external transformer T1 is connect with the port A1_B, the end A2_A
Mouth is connect with the port A2_B；The port B1_A of external transformer T1 is electrically connected with the port B1_B and three-phase；
The port A1_A of the 1 port connection external transformer T1 of the 5 needle interface P2,3 ports of 5 needle interface P2 connect+5V output
Port, 19 ports of the 4 ports connection STM8 chip U2 of 5 needle interface P2, the 5 ports ground connection of 5 needle interface P2；
2,4 ports of the power conversion chip U14 are grounded；3 ports of power conversion chip U14 and power rectifier chip U12
1 port connection；Polar capacitor C6 is just terminating 3 ports of power conversion chip U14, negativing ending grounding；Power conversion chip U14's
1 port conduct+5V output port；Polarity free capacitor C4 and polar capacitor C7 anode connect 1 end of power conversion chip U14 respectively
Mouthful, negativing ending grounding；
The connection structure of the STM8 and peripheral circuit module (3) is as follows:
9 ports of the STM8 chip U2 connect+5V output port；The both ends polarity free capacitor C5 connect 9 ends of STM8 chip U2 respectively
Mouth and ground connection；7 ports of STM8 chip U2 are grounded；4,18 ports of STM8 chip U2 connect 1,3 ports of 4 needle interface P3 respectively；4
2 ports of needle interface P3 are grounded；4 ports of 4 needle interface P3 connect+5V output port；4 ports of STM8 chip U2 pass through resistance R7
Connect+5V output port；The both ends polarity free capacitor C1 connect 4 ports and the ground connection of STM8 chip U2 respectively；2 ports of STM8 chip U2
Connect the negative terminal of LED light L1；LED light L1 anode connects+5V output port by resistance R4；8 ports of STM8 chip U2 connect nonpolarity
Capacitor C2, polarity free capacitor C2 other end ground connection；11,12 and 13 ports of STM8 chip U2 are respectively labeled as UZero, VZero
With the port WZero, and it is separately connected 4 ports of 4 ports of optocoupler U1,4 ports of optocoupler U4 and optocoupler U6；STM8 chip U2's
14,15 and 16 ports are respectively labeled as the port UTrigger, VTrigger and WTrigger, and respectively with resistance R12, R25 and
R33 is connected；19 and 20 ports of STM8 chip U2 are grounded after passing through resistance R20 and R34 respectively；It marks 19 ports of STM8 chip U2
It is denoted as the port AdjustIn, and connects 4 ports of 5 needle interface P2；
The connection structure of the phase-shift pulse generation circuit module (4) is as follows:
1 port of the optocoupler U3 connects+5V output port by resistance R27；1 port phase of 2 ports of optocoupler U3 and optocoupler U5
Even；2 ports of optocoupler U5 are connected with 3 ports of triode Q3；2 ports of triode Q3 are grounded；1 port of triode Q3 connects electricity
Hinder R33；The resistance R33 other end is labeled as the port WTrigger, and is connected with 16 ports of STM8 chip U2；4 ends of optocoupler U5
Mouth is labeled as the port DXS3+, and is connected with 3 ports of bidirectional triode thyristor Q6；6 ports of optocoupler U5 connect 4 ports of optocoupler U3；Light
The 6 port connecting resistance R32 of coupling U3；The resistance R32 other end is labeled as the port DXS3, and is electrically connected with three-phase all the way；
1 port of the optocoupler U7 connects+5V output port by resistance R16；1 port phase of 2 ports of optocoupler U7 and optocoupler U9
Even；2 ports of optocoupler U9 are connected with 3 ports of triode Q2；2 ports of triode Q2 are grounded；1 port of triode Q2 connects electricity
Hinder R25；The resistance R25 other end is labeled as the port VTrigger, and is connected with 15 ports of STM8 chip U2；4 ends of optocoupler U9
Mouth is labeled as the port DXS2+, and is connected with 3 ports of bidirectional triode thyristor Q5；6 ports of optocoupler U9 connect 4 ports of optocoupler U7；Light
The 6 port connecting resistance R24 of coupling U7；The resistance R24 other end is labeled as the port DXS2, and is electrically connected with three-phase all the way；
1 port of the optocoupler U11 is by connecing+5V output port on resistance R3；2 ports of optocoupler U11 and 1 end of optocoupler U13
Mouth is connected；2 ports of optocoupler U13 are connected with 3 ports of triode Q1；2 ports of triode Q1 are grounded, 1 end of triode Q1
Mouth connecting resistance R12, the resistance R12 other end is labeled as the port UTrigger, and is connected with 14 ports of STM8 chip U2；Optocoupler
4 port labels of U13 are the port DXS1+, and are connected with 3 ports of bidirectional triode thyristor Q4；6 ports of optocoupler U13 meet optocoupler U11
4 ports；The 6 port connecting resistance R11 of optocoupler U11；The resistance R11 other end be labeled as the port DXS1, and with three-phase electricity phase all the way
Even；
The connection structure of the control circuit of bidirectional thyristor module (5) is as follows:
2 port labels of the bidirectional triode thyristor Q4 are the port DXS1, connect three-phase electricity all the way, and with external transformer T1's
B1_A with PCB weld tabs UAIN is connected；1 port of bidirectional triode thyristor Q4 meets PCB weld tabs UAOUT；Distinguish at the both ends of varistor CY1
It is connected with 1 and 2 ports of bidirectional triode thyristor Q4；3 port labels of bidirectional triode thyristor Q4 are the port DXS1+, and and phase-shift pulse
Resistance R11 in generation circuit module (4) is connected；
2 port labels of the bidirectional triode thyristor Q5 are the port DXS2, connect three-phase electricity all the way, and with external transformer T1's
B2_A with PCB weld tabs UBIN is connected；1 port of bidirectional triode thyristor Q5 meets PCB weld tabs UBOUT；Distinguish at the both ends of varistor CY2
It is connected with 1 and 2 ports of bidirectional triode thyristor Q5；3 port labels of bidirectional triode thyristor Q5 are the port DXS2+, and and phase-shift pulse
Resistance R24 in generation circuit module (4) is connected；
2 port labels of the bidirectional triode thyristor Q6 are the port DXS3, connect three-phase electricity all the way, and be connected with PCB weld tabs UCIN；
1 port of bidirectional triode thyristor Q6 meets PCB weld tabs UCOUT；The both ends of varistor CY3 respectively with 1,2 ends of bidirectional triode thyristor Q6
Mouth is connected；3 port labels of bidirectional triode thyristor Q6 be the port DXS3+, and with the resistance in phase-shift pulse generation circuit module (4)
R32 is connected.
2. the method for carrying out asynchronous machine soft start using asynchronous machine soft activator as described in claim 1, it is characterised in that:
The following steps are included:
1), STM8 and peripheral circuit module (3) initialization refresh LED light L1 and show that state is to be always on state, pass through Upper system
The minimum trigger angle, maximum Trigger Angle and touching of bidirectional triode thyristor Q4, Q5 and Q6 are manually set to STM8 and peripheral circuit module (3)
Angle decreasing value is sent out, step 2) is then executed；
2) control instruction, power-switching circuit, are selected to the artificial input pattern of power-switching circuit module (2) by Upper system
Output mode selects control instruction to STM8 and peripheral circuit module (3) to module (2) again；STM8 and peripheral circuit module (3) root
Judge whether threephase asynchronous machine (6) is self-starting mode according to model selection control instruction；If model selection control instruction is small
In 1V, it is self-starting mode, executes step 3)；It is not self-starting mode, then if model selection control instruction is more than or equal to 1V
For external control model, step 8) is executed；
3) it is fast blink state that, STM8 and peripheral circuit module (3), which refresh LED light L1 state, and Trigger Angle is given as setting
Maximum Trigger Angle executes step 4)；
4), STM8 and peripheral circuit module (3) judge whether Trigger Angle is less than or equal to the minimum trigger angle of setting；When Trigger Angle is small
When being equal to the minimum trigger angle of setting, step 7) is executed；When Trigger Angle is greater than the minimum trigger angle of setting, step is executed
5)；
5), STM8 and peripheral circuit module (3) reduce the numerical value of Trigger Angle according to the Trigger Angle decreasing value of setting, execute step
6)；
6), zero cross detection circuit module (1) detection 380V three-phase is electrically generated zero cross signal and is transferred to STM8 and peripheral circuit module
(3), STM8 and peripheral circuit module (3) generate corresponding phase-shift pulse signal according to zero cross signal and Trigger Angle and are transferred to phase shift
Pulse-generating circuit module (4) executes step 4) again；
7) current Trigger Angle, is kept, it is to be always on state, phase-shift pulse that STM8 and peripheral circuit module (3), which refresh LED light L1 state,
Generation circuit module (4) exports pulse control signal and gives control circuit of bidirectional thyristor module (5), control circuit of bidirectional thyristor
Module (5) controls threephase asynchronous machine (6) start completion, terminates；
8) it is to flash state at a slow speed that, STM8 and peripheral circuit module (3), which refresh LED light L1 state, again detection pattern selection control
System instruction executes step 9) if model selection control instruction is less than or equal to 1V；If model selection control instruction is greater than
1V executes step 10)；
9), Trigger Angle is given as the minimum trigger angle of setting by STM8 and peripheral circuit module (3), executes step 11)；
10), STM8 and peripheral circuit module (3) execute step according to the given Trigger Angle of the size of model selection control instruction
11)；
11), zero cross detection circuit module (1) detection 380V three-phase is electrically generated zero cross signal and is transferred to STM8 and peripheral circuit module
(3), STM8 and peripheral circuit module (3) generate phase-shift pulse signal according to zero cross signal and Trigger Angle and are transferred to phase-shift pulse production
Raw circuit module (4), phase-shift pulse generation circuit module (4) export pulse control signal and give control circuit of bidirectional thyristor module
(5), control circuit of bidirectional thyristor module (5) control threephase asynchronous machine (6) work executes step 8) again.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000023979A (en) * | 1999-12-30 | 2000-05-06 | 나병영 | Circuit for starting of induction motor |
| CN101598749A (en) * | 2009-06-26 | 2009-12-09 | 中兴通讯股份有限公司 | Three-phase does not have the center line alternating current zero crossing detection device |
| CN102368672A (en) * | 2011-07-19 | 2012-03-07 | 株洲变流技术国家工程研究中心有限公司 | Simulation device and simulation method for soft start of motor |
-
2017
- 2017-04-21 CN CN201710266267.9A patent/CN107070310B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000023979A (en) * | 1999-12-30 | 2000-05-06 | 나병영 | Circuit for starting of induction motor |
| CN101598749A (en) * | 2009-06-26 | 2009-12-09 | 中兴通讯股份有限公司 | Three-phase does not have the center line alternating current zero crossing detection device |
| CN102368672A (en) * | 2011-07-19 | 2012-03-07 | 株洲变流技术国家工程研究中心有限公司 | Simulation device and simulation method for soft start of motor |
Non-Patent Citations (2)
| Title |
|---|
| "低谐波软启动器的研究";李常青等;《现代电子技术》;20140401;第37卷(第7期);第107-109页 * |
| "基于嵌入式的异步电机智能软起动器的研究";周京波;《中国优秀硕士学位论文全文数据库》;20130315;第38-40页 * |
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