CN201717816U - Electromotor pressure reduction electricity-saving controller - Google Patents
Electromotor pressure reduction electricity-saving controller Download PDFInfo
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- CN201717816U CN201717816U CN2009202661215U CN200920266121U CN201717816U CN 201717816 U CN201717816 U CN 201717816U CN 2009202661215 U CN2009202661215 U CN 2009202661215U CN 200920266121 U CN200920266121 U CN 200920266121U CN 201717816 U CN201717816 U CN 201717816U
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Abstract
The utility model relates to an electromotor pressure reduction electricity-saving controller comprising a power circuit, a microprocessor circuit and a power factor angle collection circuit. The microprocessor circuit is respectively connected to the power circuit, a current collection circuit, a synchronous information collection circuit, a controllable silicon driving circuit, a controllable silicon circuit, and a control signal input circuit. The controllable silicon circuit comprises a first, second, third controllable silicon group, each of which comprises two unidirectional controllable silicon in the reverse direction parallel connection. One end of each of the three controllable silicon group can be used for the controller input end, the other end is the controller output end. The controllable silicon driving circuit comprises a first, second, third circuit, which are respectively connected to the triggering end of the first, second, third controllable silicon group. The utility model has advantages of good real-time performance, high accuracy and universality.
Description
Technical field
The utility model belongs to the energy saving motor technical field, is specifically related to a kind of voltage-reducing and electricity-saving controller of motor.
Background technology
Along with making rapid progress of modern science and technology, asynchronous motor has obtained using widely in current industrial production and daily life as most important power set, is the main consumer of electric energy.Single with regard to China, asynchronous motor is widely used in all kinds of electric drive systems, consume the 60%-70% that electric energy accounts for national power consumption total amount, and 60% motor is arranged usually all is to move under 60% or 60% following load condition, the situation of low load with strong power or underrun is quite general, causes the operational efficiency of motor and power factor lower.In the case, considerable part is with the waste of forms such as heating, iron loss, noise and vibrations in the electric energy of electrical consumption, causes very big waste of energy.
The problem that the controller of present most motor all just solves soft start also is the problem of reduced voltage starting, the circuit of existing electricity-saving controller, utilize the sample circuit sampling, thereby judge the running of motor, but sampling waveform often, also need to change with information processing after feedback again, can not realize that real-time detection power factor angle and control silicon controlled trigger, its accuracy is not high, and power bracket is narrow, does not possess versatility.
Summary of the invention
It is good that the purpose of this utility model provides a kind of real-time, accuracy height and the voltage-reducing and electricity-saving controller of motor with versatility.
In order to achieve the above object, the technical solution of the utility model is: a kind of voltage-reducing and electricity-saving controller of motor, comprise power circuit, microcontroller circuit and power-factor angle Acquisition Circuit, power circuit, the power-factor angle Acquisition Circuit all is connected with microcontroller circuit, its improvement is: also comprise the current acquisition circuit, the synchronizing information Acquisition Circuit, controllable silicon drive circuit, ghyristor circuit and control signal input circuit, the current acquisition circuit, the synchronizing information Acquisition Circuit, controllable silicon drive circuit is connected with microcontroller circuit respectively with the control signal input circuit, described ghyristor circuit comprises first Group of Silicon Controlled Rectifier, second Group of Silicon Controlled Rectifier and the 3rd Group of Silicon Controlled Rectifier, first Group of Silicon Controlled Rectifier, every group of 2 unidirectional controllable silicon S CR that comprise reverse parallel connection of second Group of Silicon Controlled Rectifier and the 3rd Group of Silicon Controlled Rectifier, one end of described first Group of Silicon Controlled Rectifier is controller incoming end A, the other end is controller output end A ', one end of second Group of Silicon Controlled Rectifier is controller incoming end B, the other end is controller output end B ', one end of the 3rd Group of Silicon Controlled Rectifier is controller incoming end C, the other end is controller output end C ', controllable silicon drive circuit comprises first controllable silicon drive circuit, second controllable silicon drive circuit and the 3rd controllable silicon drive circuit, first controllable silicon drive circuit comprises first drive circuit, second controllable silicon drive circuit comprises second drive circuit, the 3rd controllable silicon drive circuit comprises the 3rd drive circuit, two trigger end G2 of first drive circuit and first Group of Silicon Controlled Rectifier, G5 connects, two trigger end G6 of second drive circuit and second Group of Silicon Controlled Rectifier, G3 connects, two trigger end G4 of the 3rd drive circuit and the 3rd Group of Silicon Controlled Rectifier, G1 connects.
Described current acquisition circuit comprises the first current acquisition circuit a5, the second current acquisition circuit b5 and the 3rd current acquisition circuit c5; The first current acquisition circuit a5 comprises that first bridge rectifier, first electric current that connect successively change the potential circuit and first filter circuit, and first filter circuit is connected with microcontroller circuit; The second current acquisition circuit b5 comprises that second bridge rectifier, second electric current that connect successively change the potential circuit and second filter circuit, and second filter circuit is connected with microcontroller circuit; The 3rd current acquisition circuit c5 comprises that the 3rd bridge rectifier, the 3rd electric current that connect successively change potential circuit and the 3rd filter circuit, and the 3rd filter circuit is connected with microcontroller circuit.
Described current acquisition circuit also comprises the first current transformer a5-4, the second current transformer b5-4 and the 3rd current transformer c5-4; Three current transformer a5-4, b5-4, c5-4 all adopt punching; The secondary winding end of the first current transformer a5-4 is connected with the input of first bridge rectifier of the first current acquisition circuit a5; The secondary winding end of the second current transformer b5-4 is connected with the input of second bridge rectifier of the second current acquisition circuit b5; The secondary winding end of the 3rd current transformer c5-4 is connected with the input of the 3rd bridge rectifier of the 3rd current acquisition circuit c5.
Described power-factor angle Acquisition Circuit comprises the first power-factor angle Acquisition Circuit a6, the second power-factor angle Acquisition Circuit b6 and the 3rd power-factor angle Acquisition Circuit c6; The first power-factor angle Acquisition Circuit a6 comprises first shaping circuit that is connected with first bridge rectifier filter circuit, and first shaping circuit is connected with microcontroller circuit; The second power-factor angle Acquisition Circuit b6 comprises second shaping circuit that is connected with second bridge rectifier filter circuit, and second shaping circuit is connected with microcontroller circuit; The 3rd power-factor angle Acquisition Circuit c6 comprises the 3rd shaping circuit that is connected with the 3rd bridge rectifier filter circuit, and the 3rd shaping circuit is connected with microcontroller circuit.
Described power-factor angle Acquisition Circuit also comprises the first protective circuit a6-3, the second protective circuit b6-3 and the 3rd protective circuit c6-3; The first protective circuit a6-3 is connected with first bridge rectifier filter circuit of the first power-factor angle Acquisition Circuit a6; The second protective circuit b6-3 is connected with second bridge rectifier filter circuit of the second power-factor angle Acquisition Circuit b6; The 3rd protective circuit c6-3 is connected with the 3rd bridge rectifier filter circuit of the 3rd power-factor angle Acquisition Circuit c6.
Described synchronizing information Acquisition Circuit comprises the first synchronizing information Acquisition Circuit a7 and the second synchronizing information Acquisition Circuit b7; The first synchronizing information Acquisition Circuit a7 comprises the 4th shaping circuit that is connected with first voltage stabilizing circuit, and the 4th shaping circuit is connected with microcontroller circuit; The second synchronizing information Acquisition Circuit b7 comprises the 5th shaping circuit that is connected with second voltage stabilizing circuit, and the 5th shaping circuit is connected with microcontroller circuit.
The first controllable silicon drive circuit a8 of described controllable silicon drive circuit also comprises first switching circuit that is connected with first drive circuit, and first switching circuit is connected with microcontroller circuit; The second controllable silicon drive circuit b8 also comprises the second switch circuit that is connected with second drive circuit, and the second switch circuit is connected with microcontroller circuit; The 3rd controllable silicon drive circuit c8 also comprises the 3rd switching circuit that is connected with the 3rd drive circuit, and the 3rd switching circuit is connected with microcontroller circuit.
Described control signal input circuit comprises the first optical coupling isolation circuit a10, the second optical coupling isolation circuit b10 and the 3rd optical coupling isolation circuit c10, and three groups of optical coupling isolation circuit a10, b10, c10 are connected with microcontroller circuit respectively.
Voltage-reducing and electricity-saving controller of motor also can comprise display circuit and keyboard circuit, and display circuit is connected with microcontroller circuit respectively with keyboard circuit, and the microprocessor in the described microcontroller circuit adopts 51 series monolithics or AVR series monolithic.
The good effect that the utility model had is: can adopt the reduced voltage starting mode to bigger motor in actual engineering, to reduce starting current and starting torque, after inserting the utility model voltage-reducing and electricity-saving controller of motor between live wire and the motor, owing to adopt the current acquisition circuit, can change from the electric current of motion tracking load, adopt microcontroller circuit that the data that collect are gathered computing and in time make feedback, improved accuracy, real-time is good; Adopt the power-factor angle Acquisition Circuit,, obtain the silicon controlled angle of flow and trigger angle, thereby calculate power-factor angle indirectly, so the accuracy height by gathering magnitude of voltage; Adopt the synchronizing information Acquisition Circuit, guaranteed that the benchmark of calculating trigger angle is consistent, realized the controllability of the angle of flow, guaranteed its accuracy; Adopt controllable silicon drive circuit, Group of Silicon Controlled Rectifier, Group of Silicon Controlled Rectifier comprises 6 unidirectional controllable silicon S CR, per 2 unidirectional controllable silicon S CR reverse parallel connections constitute 1 Group of Silicon Controlled Rectifier, form 3 Group of Silicon Controlled Rectifier altogether, thereby the drawback that can avoid bidirectional triode thyristor three quadrant conductings to exist, so reliability height and power bracket are big, thereby can make and the utlity model has versatility.
Description of drawings
Fig. 1 is the structural representation of a kind of voltage-reducing and electricity-saving controller of motor of the present utility model;
Fig. 2 is the schematic diagram that the controllable silicon of embodiment is connected with motor;
Fig. 3 is waveform and the angle corresponding relation figure of embodiment;
Fig. 4 is the current acquisition circuit theory diagrams of embodiment;
Fig. 5 is the power-factor angle Acquisition Circuit schematic diagram of embodiment;
Fig. 6 is the synchronizing information Acquisition Circuit schematic diagram of embodiment;
Fig. 7 is the controllable silicon drive circuit schematic diagram of embodiment;
Fig. 8 is the control signal input circuit schematic diagram of embodiment.
Embodiment
Below in conjunction with the embodiment that accompanying drawing provides, the utility model is described in further detail.
As Fig. 1,2,4,5,6,7, shown in 8, a kind of voltage-reducing and electricity-saving controller of motor, comprise power circuit 1, microcontroller circuit 3 and power-factor angle Acquisition Circuit 6, power circuit 1, power-factor angle Acquisition Circuit 6 all is connected with microcontroller circuit 3, also comprise current acquisition circuit 5, synchronizing information Acquisition Circuit 7, controllable silicon drive circuit 8, ghyristor circuit 9 and control signal input circuit 10, current acquisition circuit 5, synchronizing information Acquisition Circuit 7, controllable silicon drive circuit 8 is connected with microcontroller circuit 3 respectively with control signal input circuit 10, described ghyristor circuit 9 comprises the first Group of Silicon Controlled Rectifier 9-1, the second Group of Silicon Controlled Rectifier 9-2 and the 3rd Group of Silicon Controlled Rectifier 9-3, the first Group of Silicon Controlled Rectifier 9-1, every group of 2 unidirectional controllable silicon S CR that comprise reverse parallel connection of the second Group of Silicon Controlled Rectifier 9-2 and the 3rd Group of Silicon Controlled Rectifier 9-3, the end of the described first Group of Silicon Controlled Rectifier 9-1 is controller incoming end A, the other end is controller output end A ', the end of the second Group of Silicon Controlled Rectifier 9-2 is controller incoming end B, the other end is controller output end B ', the end of the 3rd Group of Silicon Controlled Rectifier 9-3 is controller incoming end C, the other end is controller output end C ', controllable silicon drive circuit 8 comprises the first controllable silicon drive circuit a8, the second controllable silicon drive circuit b8 and the 3rd controllable silicon drive circuit c8, the first controllable silicon drive circuit a8 comprises the first drive circuit a8-2, the second controllable silicon drive circuit b8 comprises the second drive circuit b8-2, the 3rd controllable silicon drive circuit c8 comprises the 3rd drive circuit c8-2, two trigger end G2 of the first drive circuit a8-2 and the first Group of Silicon Controlled Rectifier 9-1, G5 connects, two trigger end G6 of the second drive circuit b8-2 and the second Group of Silicon Controlled Rectifier 9-2, G3 connects, two trigger end G4 of the 3rd drive circuit c8-2 and the 3rd Group of Silicon Controlled Rectifier 9-3, G1 connects.Microprocessor in the microcontroller circuit 3 adopts 51 series monolithics or AVR series monolithic.At the preferred ATMEGA128 of embodiment.Keyboard circuit 4 is finished the parameter setting, and display circuit 2 is used to show the parameter value of current value and setting, can change by real-time tracking.As shown in Figure 2, in order to guarantee when voltage-reducing and electricity-saving controller of motor is out of order, do not influence the operate as normal of motor, the two ends of 3 Group of Silicon Controlled Rectifier switch respectively in parallel, when promptly guaranteeing the voltage-reducing and electricity-saving controller of motor operate as normal, switch disconnects, when being out of order, switch closure, one end A of 3 Group of Silicon Controlled Rectifier, B, the C line of starting to exchange fire, other end A ', B ', C ' is serially connected in respectively on the three-phase coil of Δ connection, and this connection mode harmonic ratio is less, pressure regulating performance is the most superior, owing to there is not center line, therefore motor current circulation when work will have two groups of controllable silicons to constitute the loop at least, and wherein one is the conducting of positive controllable silicon mutually, and another is anti-phase controllable silicon conducting mutually.In order to guarantee to make the conductings simultaneously of two controllable silicons when the initial work of circuit, requirement can produce the circuits for triggering greater than 60 ° broad pulse or two burst pulses, turn-off voluntarily in the motor current zero passage by controllable silicon, this circuit is simple, little, the use and easy to maintenance of regulator volume.
In the present embodiment, the annexation of each several part circuit is to utilize the label that picks out the end interpolation of each several part circuit to be connected with each pin of microprocessor respectively in the accompanying drawing.
Shown in the accompanying drawing 4,5,8, JP1～JP3, JP5, JP6 are the header chip, play the effect of connecting interface., it picks out the corresponding connection of label of label with the incoming end of each circuit of end.
As shown in Figure 4, current acquisition circuit 5 comprises the first current acquisition circuit a5, the second current acquisition circuit b5, the 3rd current acquisition circuit c5; The first current acquisition circuit a5 comprises that the first bridge rectifier a5-1, first electric current that connect successively change the potential circuit a5-2 and the first filter circuit a5-3, and the first filter circuit a5-3 is connected with microcontroller circuit 3; The second current acquisition circuit b5 comprises that the second bridge rectifier b5-1, second electric current that connect successively change the potential circuit b5-2 and the second filter circuit b5-3, and the second filter circuit b5-3 is connected with microcontroller circuit 3; The 3rd current acquisition circuit c5 comprises that the 3rd bridge rectifier c5-1, the 3rd electric current that connect successively change potential circuit c5-2 and the 3rd filter circuit c5-3, and the 3rd filter circuit c5-3 is connected with microcontroller circuit 3.In order to measure electric current, current acquisition circuit 5 also comprises the first current transformer a5-4, the second current transformer b5-4, the 3rd current transformer c5-4; Three current transformer a5-4, b5-4, c5-4 all adopt punching; The secondary winding end of the first electric current mutual inductance a5-4 is connected with the input of the first bridge rectifier a5-1 of the first current acquisition circuit a5; The secondary winding end of the second current transformer b5-4 is connected with the input of the second bridge rectifier b5-1 of the second current acquisition circuit b5; The secondary winding end of the 3rd current transformer c5-4 is connected with the input of the 3rd bridge rectifier c5-1 of the 3rd current acquisition circuit c5.The secondary winding end of the first current transformer a5-4 is connected with input A1, the A2 of the first bridge rectifier a5-1 of the first current acquisition circuit a5, and the output terminals A DCA of the first filter circuit a5-3 is connected with input 61 pin of microprocessor ATMEGA128 in the microcontroller circuit 3; The secondary winding end of the second current transformer b5-4 is connected with input B1, the B2 of the second bridge rectifier b5-1 of the second current acquisition circuit b5, and the output terminals A DCB of the second filter circuit b5-3 is connected with input 60 pin of microprocessor ATMEGA128 in the microcontroller circuit 3; The secondary winding end of the 3rd current transformer c5-4 is connected with input C1, the C2 of the 3rd bridge rectifier c5-1 of the 3rd current acquisition circuit c5, and the output terminals A DCC of the 3rd filter circuit c5-3 is connected with input 59 pin of microprocessor ATMEGA128 in the microcontroller circuit 3; The electric current output of current transformer is than being 150A: 0.1A, 200A: 0.1A or other ratio.Adopt current transformer, can improve its accuracy, select the low Schottky diode of tube voltage drop in the bridge rectifier for use, guaranteed acquisition precision.
As shown in Figure 5, power-factor angle Acquisition Circuit 6 comprises the first power-factor angle Acquisition Circuit a6, the second power-factor angle Acquisition Circuit b6, the 3rd power-factor angle Acquisition Circuit c6; The first power-factor angle Acquisition Circuit a6 comprises the first shaping circuit a6-2 that is connected with the first bridge rectifier filter circuit a6-1, and the first shaping circuit a6-2 is connected with microcontroller circuit 3; The second power-factor angle Acquisition Circuit b6 comprises the second shaping circuit b6-2 that is connected with the second bridge rectifier filter circuit b6-1, and the second shaping circuit b6-2 is connected with microcontroller circuit 3; The 3rd power-factor angle Acquisition Circuit c6 comprises the 3rd shaping circuit c6-2 that is connected with the 3rd bridge rectifier filter circuit c6-1, and the 3rd shaping circuit c6-2 is connected with microcontroller circuit 3.For the stability of power-factor angle Acquisition Circuit 6 work, power-factor angle Acquisition Circuit 6 also comprises the first protective circuit a6-3, the second protective circuit b6-3, the 3rd protective circuit c6-3; The first protective circuit a6-3 is connected with the first bridge rectifier filter circuit a6-1 of the first power-factor angle Acquisition Circuit a6; The second protective circuit b6-3 is connected with the second bridge rectifier filter circuit b6-1 of the second power-factor angle Acquisition Circuit b6; The 3rd protective circuit c6-3 is connected with the 3rd bridge rectifier filter circuit c6-1 of the 3rd power-factor angle Acquisition Circuit c6.The output INT2 of the first shaping circuit a6-2 in the power-factor angle Acquisition Circuit 6 is connected with input 27 pin of microprocessor ATMEGA128 in the microcontroller circuit 3, the output INT3 of the second shaping circuit b6-2 is connected with input 28 pin of microprocessor ATMEGA128 in the microcontroller circuit 3, and the output INT2 of the 3rd shaping circuit c6-2 is connected with input 6 pin of microprocessor ATMEGA128 in the microcontroller circuit 3.The model that photoelectrical coupler among the first shaping circuit a6-2, the second shaping circuit b6-2, the 3rd shaping circuit c6-2 adopts is 6N139.By gathering magnitude of voltage, promptly measure the width (angle of flow) of square wave, send microprocessor again back to and calculate, thereby obtain power-factor angle.
As shown in Figure 7, the first controllable silicon drive circuit a8 of controllable silicon drive circuit 8 also comprises the first switching circuit a8-1 that is connected with the first drive circuit a8-2, and the first switching circuit a8-1 is connected with microcontroller circuit 3; The second controllable silicon drive circuit b8 also comprises the second switch circuit b8-1 that is connected with the second drive circuit b8-2, and second switch circuit b8-1 is connected with microcontroller circuit 3; The 3rd controllable silicon drive circuit c8 also comprises the 3rd switching circuit c8-1 that is connected with the 3rd drive circuit c8-2, and the 3rd switching circuit c8-1 is connected with microcontroller circuit 3.A silicon controlled trigger end G2 among the input G2 termination first Group of Silicon Controlled Rectifier 9-1 of the first drive circuit a8-2, the input G5 of the first drive circuit a8-2 meets reverse another silicon controlled trigger end G5 among the first Group of Silicon Controlled Rectifier 9-1, a silicon controlled trigger end G6 among the input G6 termination second Group of Silicon Controlled Rectifier 9-2 of the second drive circuit b8-2, reverse another silicon controlled trigger end G3 among the input G3 termination second Group of Silicon Controlled Rectifier 9-2 of the second drive circuit b8-2, a silicon controlled trigger end G4 among input G4 termination the 3rd Group of Silicon Controlled Rectifier 9-3 of the 3rd drive circuit c8-2, the input G1 of the 3rd drive circuit c8-2 meets reverse another silicon controlled trigger end G1 among the 3rd Group of Silicon Controlled Rectifier 9-3, the first drive circuit a8-2 of controllable silicon drive circuit 8, the second drive circuit b8-2, the model that photoelectrical coupler UM1 among the 3rd drive circuit c8-2～UM6 adopts is MOC3052, the input PC.2 of the first switching circuit a8-1 is connected with output 37 pin of microprocessor ATMEGA128 in the microcontroller circuit 3, the input PC.3 of second switch circuit b8-1 is connected with output 38 pin of microprocessor ATMEGA128 in the microcontroller circuit 3, and the input PC.4 of the 3rd switching circuit c8-1 is connected with output 39 pin of microprocessor ATMEGA128 in the microcontroller circuit 3.
As shown in Figure 8, for to Signal Spacing, avoid interference, control signal input circuit 10 comprises the first optical coupling isolation circuit a10, the second optical coupling isolation circuit b10, the 3rd optical coupling isolation circuit c10, and three groups of optical coupling isolation circuit a10, b10, c10 are connected with microcontroller circuit 3 respectively.The model that photoelectrical coupler U1 in the control signal input circuit 10～U3 adopts is TLP521, the output PG0 of the first optical coupling isolation circuit a10 is connected with input 33 pin of microprocessor ATMEGA128 in the microprocessor 3, the output PG.1 of the second optical coupling isolation circuit b10 is connected with input 34 pin of microprocessor ATMEGA128 in the microprocessor 3, and the output PG.2 of the 3rd optical coupling isolation circuit c10 is connected with input 43 pin of microprocessor ATMEGA128 in the microprocessor 3.
Shown in Fig. 3,6, controllable silicon adopts phased mode to carry out pressure regulation in the utility model, must adopt broad pulse or two burst pulse to trigger, the scope of phase shift α is limited in greater than the power factor (PF) Φ of the load that is connected on motor terminal and less than 180 °, in order to guarantee correct phase relation, the control of realization synchronous triggering, the reference signal of necessary introducing and line voltage strict synchronism, i.e. synchronizing signal in circuits for triggering.Thereby comprised that in circuit synchronizing information Acquisition Circuit 7, synchronizing information Acquisition Circuit 7 comprise the first synchronizing information Acquisition Circuit a7, the second synchronizing information Acquisition Circuit b7; The first synchronizing information Acquisition Circuit a7 comprises the 4th shaping circuit a7-2 that is connected with the first voltage stabilizing circuit a7-1, and the 4th shaping circuit a7-2 is connected with microcontroller circuit 3; The second synchronizing information Acquisition Circuit b7 comprises the 5th shaping circuit b7-2 that is connected with the second voltage stabilizing circuit b7-1, and the 5th shaping circuit b7-2 is connected with microcontroller circuit 3.The output INT0 of the 4th shaping circuit a7-2 is connected with input 25 pin of microprocessor ATMEGA128 in the microcontroller circuit 3, the output INT1 of the 5th shaping circuit b7-2 is connected with input 26 pin of microprocessor ATMEGA128 in the microcontroller circuit 3, when capturing the rising edge of synchronizing signal, with this is benchmark constantly, after move angle [alpha] be trigger pulse triggers constantly.Like this, having guaranteed all has identical phase relation in each cycle, realized the controlled of the angle of flow, can accurately capture zero crossing.
The utility model power circuit 1 gives microcontroller circuit 3 power supplies, feed back to microcontroller circuit 3 again by current acquisition circuit 5, power-factor angle Acquisition Circuit 6 and synchronizing information Acquisition Circuit 7 image data, the voltage of control controllable silicon drive circuit 8 and Group of Silicon Controlled Rectifier 9, thereby the magnitude of voltage of judgement motor.
Claims (9)
1. voltage-reducing and electricity-saving controller of motor, comprise power circuit (1), microcontroller circuit (3) and power-factor angle Acquisition Circuit (6), power circuit (1), power-factor angle Acquisition Circuit (6) all is connected with microcontroller circuit (3), it is characterized in that: also comprise current acquisition circuit (5), synchronizing information Acquisition Circuit (7), controllable silicon drive circuit (8), ghyristor circuit (9) and control signal input circuit (10), current acquisition circuit (5), synchronizing information Acquisition Circuit (7), controllable silicon drive circuit (8) is connected with microcontroller circuit (3) respectively with control signal input circuit (10), described ghyristor circuit (9) comprises first Group of Silicon Controlled Rectifier (9-1), second Group of Silicon Controlled Rectifier (9-2) and the 3rd Group of Silicon Controlled Rectifier (9-3), first Group of Silicon Controlled Rectifier (9-1), every group of 2 unidirectional controllable silicon S CR that comprise reverse parallel connection of second Group of Silicon Controlled Rectifier (9-2) and the 3rd Group of Silicon Controlled Rectifier (9-3), one end of described first Group of Silicon Controlled Rectifier (9-1) is controller incoming end A, the other end is controller output end A ', one end of second Group of Silicon Controlled Rectifier (9-2) is controller incoming end B, the other end is controller output end B ', one end of the 3rd Group of Silicon Controlled Rectifier (9-3) is controller incoming end C, the other end is controller output end C ', controllable silicon drive circuit (8) comprises first controllable silicon drive circuit (a8), second controllable silicon drive circuit (b8) and the 3rd controllable silicon drive circuit (c8), first controllable silicon drive circuit (a8) comprises first drive circuit (a8-2), second controllable silicon drive circuit (b8) comprises second drive circuit (b8-2), the 3rd controllable silicon drive circuit (c8) comprises the 3rd drive circuit (c8-2), two trigger end G2 of first drive circuit (a8-2) and first Group of Silicon Controlled Rectifier (9-1), G5 connects, two trigger end G6 of second drive circuit (b8-2) and second Group of Silicon Controlled Rectifier (9-2), G3 connects, two trigger end G4 of the 3rd drive circuit (c8-2) and the 3rd Group of Silicon Controlled Rectifier (9-3), G1 connects.
2. voltage-reducing and electricity-saving controller of motor according to claim 1 is characterized in that: described current acquisition circuit (5) comprises the first current acquisition circuit a5, the second current acquisition circuit b5 and the 3rd current acquisition circuit c5; The first current acquisition circuit a5 comprises that first bridge rectifier (a5-1), first electric current that connect successively change potential circuit (a5-2) and first filter circuit (a5-3), and first filter circuit (a5-3) is connected with microcontroller circuit (3); The second current acquisition circuit b5 comprises that second bridge rectifier (b5-1), second electric current that connect successively change potential circuit (b5-2) and second filter circuit (b5-3), and second filter circuit (b5-3) is connected with microcontroller circuit (3); The 3rd current acquisition circuit c5 comprises that the 3rd bridge rectifier (c5-1), the 3rd electric current that connect successively change potential circuit (c5-2) and the 3rd filter circuit (c5-3), and the 3rd filter circuit (c5-3) is connected with microcontroller circuit (3).
3. voltage-reducing and electricity-saving controller of motor according to claim 2 is characterized in that: described current acquisition circuit (5) also comprises first current transformer (a5-4), second current transformer (b5-4) and the 3rd current transformer (c5-4); Three current transformers (a5-4, b5-4, c5-4) all adopt punching; The secondary winding end of first current transformer (a5-4) is connected with the input of first bridge rectifier (a5-1) of the first current acquisition circuit a5; The secondary winding end of second current transformer (b5-4) is connected with the input of second bridge rectifier (b5-1) of the second current acquisition circuit b5; The secondary winding end of the 3rd current transformer (c5-4) is connected with the input of the 3rd bridge rectifier (c5-1) of the 3rd current acquisition circuit c5.
4. voltage-reducing and electricity-saving controller of motor according to claim 1 is characterized in that: described power-factor angle Acquisition Circuit (6) comprises the first power-factor angle Acquisition Circuit a6, the second power-factor angle Acquisition Circuit b6 and the 3rd power-factor angle Acquisition Circuit c6; The first power-factor angle Acquisition Circuit a6 comprises first shaping circuit (a6-2) that is connected with first bridge rectifier filter circuit (a6-1), and first shaping circuit (a6-2) is connected with microcontroller circuit (3); The second power-factor angle Acquisition Circuit b6 comprises second shaping circuit (b6-2) that is connected with second bridge rectifier filter circuit (b6-1), and second shaping circuit (b6-2) is connected with microcontroller circuit (3); The 3rd power-factor angle Acquisition Circuit c6 comprises the 3rd shaping circuit (c6-2) that is connected with the 3rd bridge rectifier filter circuit (c6-1), and the 3rd shaping circuit (c6-2) is connected with microcontroller circuit (3).
5. voltage-reducing and electricity-saving controller of motor according to claim 4 is characterized in that: described power-factor angle Acquisition Circuit (6) also comprises first protective circuit (a6-3), second protective circuit (b6-3) and the 3rd protective circuit (c6-3); First protective circuit (a6-3) is connected with first bridge rectifier filter circuit (a6-1) of the first power-factor angle Acquisition Circuit a6; Second protective circuit (b6-3) is connected with second bridge rectifier filter circuit (b6-1) of the second power-factor angle Acquisition Circuit b6; The 3rd protective circuit (c6-3) is connected with the 3rd bridge rectifier filter circuit (c6-1) of the 3rd power-factor angle Acquisition Circuit c6.
6. voltage-reducing and electricity-saving controller of motor according to claim 1 is characterized in that: described synchronizing information Acquisition Circuit (7) comprises the first synchronizing information Acquisition Circuit a7 and the second synchronizing information Acquisition Circuit b7; The first synchronizing information Acquisition Circuit a7 comprises the 4th shaping circuit (a7-2) that is connected with first voltage stabilizing circuit (a7-1), and the 4th shaping circuit (a7-2) is connected with microcontroller circuit (3); The second synchronizing information Acquisition Circuit b7 comprises the 5th shaping circuit (b7-2) that is connected with second voltage stabilizing circuit (b7-1), and the 5th shaping circuit (b7-2) is connected with microcontroller circuit (3).
7. voltage-reducing and electricity-saving controller of motor according to claim 1, it is characterized in that: the first controllable silicon drive circuit a8 of described controllable silicon drive circuit (8) also comprises first switching circuit (a8-1) that is connected with first drive circuit (a8-2), and first switching circuit (a8-1) is connected with microcontroller circuit (3); The second controllable silicon drive circuit b8 also comprises the second switch circuit (b8-1) that is connected with second drive circuit (b8-2), and second switch circuit (b8-1) is connected with microcontroller circuit (3); The 3rd controllable silicon drive circuit c8 also comprises the 3rd switching circuit (c8-1) that is connected with the 3rd drive circuit (c8-2), and the 3rd switching circuit (c8-1) is connected with microcontroller circuit (3).
8. voltage-reducing and electricity-saving controller of motor according to claim 1, it is characterized in that: described control signal input circuit (10) comprises the first optical coupling isolation circuit a10, the second optical coupling isolation circuit b10 and the 3rd optical coupling isolation circuit c10, and three groups of optical coupling isolation circuit a10, b10, c10 are connected with microcontroller circuit (3) respectively.
9. voltage-reducing and electricity-saving controller of motor according to claim 1, it is characterized in that: also comprise display circuit (2) and keyboard circuit (4), display circuit (2) is connected with microcontroller circuit (3) respectively with keyboard circuit (4), and the microprocessor in the described microcontroller circuit (3) adopts 51 series monolithics or AVR series monolithic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202661215U CN201717816U (en) | 2009-10-30 | 2009-10-30 | Electromotor pressure reduction electricity-saving controller |
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| CN2009202661215U CN201717816U (en) | 2009-10-30 | 2009-10-30 | Electromotor pressure reduction electricity-saving controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324854A (en) * | 2011-09-22 | 2012-01-18 | 河海大学常州校区 | Voltage regulation circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324854A (en) * | 2011-09-22 | 2012-01-18 | 河海大学常州校区 | Voltage regulation circuit |
| CN102324854B (en) * | 2011-09-22 | 2013-10-02 | 河海大学常州校区 | Voltage regulation circuit |
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