CN202565217U - Control device without position sensor for medium-high voltage motor without commutator - Google Patents
Control device without position sensor for medium-high voltage motor without commutator Download PDFInfo
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- CN202565217U CN202565217U CN2012202506796U CN201220250679U CN202565217U CN 202565217 U CN202565217 U CN 202565217U CN 2012202506796 U CN2012202506796 U CN 2012202506796U CN 201220250679 U CN201220250679 U CN 201220250679U CN 202565217 U CN202565217 U CN 202565217U
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Abstract
A control device without position sensor for medium-high voltage motor without commutator relates to power and electronic technical field, and is put forward for reasonably giving trigger pulse to avoid violent impact current. Three detection terminals of an AC bus current detector detect three phases of currents of an AC bus, respectively; an output terminal of the AC bus current detector is connected with an AC bus current input terminal of a rectification controller in a controller; an output terminal of a voltage amplitude value detector is connected with an AC bus voltage input terminal of the rectification controller in the controller; three output terminals of a voltage detection secondary voltage division board are connected with three input terminals of a motor terminal voltage acquirer; an output terminal of the motor terminal voltage acquirer is connected with a motor terminal voltage input terminal of an inverter controller in the controller; and a detection terminal of an exciting current detector detects exciting current, and an output terminal of the exciting current detector is connected with an exciting current input terminal of an excitation controller in the controller. The control device realizes soft start of a motor without commutator.
Description
Technical field
The utility model belongs to electric and electronic technical field, is specifically related to a kind of mesohigh (position-sensorless control device of 1～35KV) commutatorless machine.
Background technology
Commutatorless machine is called self-controlled synchronous motor again, is widely used in the speed governing and the starting field of high-power synchronous motor.Rotor-position is the critical information of commutatorless machine system operate as normal.In practical application, the own characteristic of high power motor and environment for use make that all the mechanical type rotor position transducer is difficult to install and reliably working.Therefore, the commutatorless machine starting technique of development position-sensor-free has very big realistic meaning.
Automatic control frequency conversion type commutatorless machine mainly is made up of AC-DC-AC current mode thyristor frequency converter a, synchronous motor b, rotor position detector PS and control system c, and is as shown in Figure 1.
The operation of load commutatorless machine; The main rotor position detector PS that relies on detects the conducting that rotor-position is controlled inverter bridge 3 respective thyristor among the AC-DC-AC current mode thyristor frequency converter a; Along with the rotation of rotor-position, can periodically trigger thyristor in certain sequence.Inverter bridge 3 is operated in the horizontal commutation states of 120 ° of commutations, and its load is the commutatorless machine that stator can produce the induction back electromotive force.
The key of the automatic control frequency conversion speed-adjusting system operation of commutatorless machine is the detection of rotor-position.Contain abundant high order harmonic in the commutatorless machine terminal voltage, in low cruise, the motor terminal voltage amplitude is little especially, and humorous wave amplitude is bigger, effectively detects very difficulty of motor terminal voltage zero crossing.Commutatorless machine terminal voltage harmonic wave mainly contains:
1) the 300Hz harmonic wave that causes because of rectification
The power input of commutatorless machine derives from the output of mains side rectifier bridge 2, in the output of rectifier bridge 2, exists the flutter component of 6 times of supply frequencies (300Hz), and this will make inverter bridge 3 input voltages, motor terminal voltage have corresponding component.When rectifier bridge 2 trigger angle were big, flutter component was bigger, so during the motor low cruise, with the zero passage detection that has a strong impact on terminal voltage.
2) change of current pressure drop
During commutatorless machine inverter bridge 3 thyristor converters, change of current pressure drop directly influences motor terminal voltage, and motor two is formed change of current pressure drop by the short circuit of the thyristor of two conductings institute, and motor terminal voltage produces pit.
Contain abundant high order harmonic in the commutatorless machine terminal voltage, in low cruise, the motor terminal voltage amplitude is little especially, and humorous wave amplitude is bigger, effectively detects very difficulty of motor terminal voltage zero crossing.For reason given above, this paper adopts the start mode of self-supporting pulse in low speed, motor is slowly moved to is adopted the electric rotor position detection after 6% rated speed, and in the processing that these two switching points have carried out, realized reliable operation.
Motor is in the process of self-supporting pulse; The accelerator of self-supporting pulse is enough slow, and motor can effectively reach 3～4Hz, and is shown in Figure 2; Is example with motor rotor position at the A point; In any position of self-supporting pulse in 1～2 interval, device can both guarantee to give the torque of positive direction, and keeps the convergence of trigger impulse and motor speed relative position.Like the position of trigger impulse at zone 1 B, and electric machine frequency is during greater than the frequency of given trigger impulse, and the pulse meeting is mobile to A point, and along with diminishing of torque, motor speed can reduce, and finally makes trigger impulse move to the direction of C.If trigger impulse is in the position of zone 1 B, and electric machine frequency is during less than the frequency of given trigger impulse, and the pulse meeting is mobile to C point, and along with the change of torque is big, motor speed can increase, and finally makes trigger impulse move to the direction of A.In like manner, also can lead to the same conclusion in zone 2.Thereby can know when self-supporting pulse mode runs to 3Hz with motor stabilizing that trigger impulse is in 1,2 zone, so give next trigger impulse as long as open accordingly this moment.
Hence one can see that, and trigger impulse and motor speed have certain convergence relation, and reasonable given trigger impulse can make motor take certain rotating speed to.
The utility model content
The utility model is for reasonable given trigger impulse, thereby avoided violent impulse current, and a kind of position-sensorless control device of mesohigh commutatorless machine is provided.
The position-sensorless control device of a kind of mesohigh commutatorless machine of the utility model comprises controller, ac bus current detector, dc bus current detector, motor side current detector, voltage detecting second divided voltage plate, motor terminal voltage grabber, voltage transformer, voltage magnitude detector and exciting current detector; Controller comprises commutation controller, inverter controller and excitation controller; Three test sides of ac bus current detector are detected the three-phase current of ac bus respectively; The output of ac bus current detector connects the ac bus current input terminal of the commutation controller in the controller; Three test sides of voltage transformer are detected the three-phase voltage of ac bus respectively; Three outputs of voltage transformer connect three inputs of voltage magnitude detector respectively; The output of voltage magnitude detector connects the ac bus voltage input end of the commutation controller in the controller; The electric current of dc bus is detected in the test side of dc bus current detector; The output of dc bus current detector connects the dc bus current input of the commutation controller in the controller; Three test sides of voltage detecting second divided voltage plate are detected the three-phase voltage of motor side respectively; Three outputs of voltage detecting second divided voltage plate connect three inputs of motor terminal voltage grabber respectively; The output of motor terminal voltage grabber connects the motor terminal voltage input of the inverter controller in the controller; Three test sides of motor side current detector are detected the three-phase current of motor side respectively, and the output of motor side current detector connects the motor side current input terminal of the inverter controller in the controller, and exciting current is detected in the test side of exciting current detector; The output of exciting current detector connects the exciting current input of controller excitation controller, and the controlled rectification bridge signal output of the rectifier bridge signal output part of the commutation controller in the controller, the inverter bridge signal output part of inverter controller and excitation controller is connected with the signal input part of rectifier bridge, the signal input part of inverter bridge and the signal input part of three-phase controlled rectification bridge respectively.
The advantage of the utility model is; Under the situation that does not add position detecting device; Realized the soft start of the commutatorless machine of no-rotor position detector; And catch with uncontious commutation to back electromotive force to self-supporting pulse and to be easy to generate the problem of impulse current to these two switching points of load current-change, on control method, carried out rational change, avoided violent impulse current.
Description of drawings
Fig. 1 is an existing automatic control frequency conversion type commutatorless machine system pie graph, and Fig. 2 is the corresponding sketch map of rotor-position and trigger impulse thereof; Fig. 3 is the structural representation of the utility model; Fig. 4 is a voltage detecting second divided voltage plate circuit diagram; Fig. 5 be used for that zero crossing detects catch modulate circuit figure, Fig. 6 is used for voltage magnitude to detect modulate circuit figure.
Embodiment
Embodiment one: combine Fig. 3 that this execution mode is described, this execution mode comprises controller 1, ac bus current detector 5, dc bus current detector 6, motor side current detector 7, voltage detecting second divided voltage plate 8, motor terminal voltage grabber 9, voltage transformer 10, voltage magnitude detector 11 and exciting current detector 12;
Three test sides of ac bus current detector 5 are detected the three-phase current of ac bus respectively, and the output of ac bus current detector 5 connects the ac bus current input terminal of the commutation controller 1-1 in the controller 1,
Three test sides of voltage transformer 10 are detected the three-phase voltage of ac bus respectively; Three outputs of voltage transformer 10 connect three inputs of voltage magnitude detector 11 respectively; The output of voltage magnitude detector 11 connects the ac bus voltage input end of the commutation controller 1-1 in the controller 1
The electric current of dc bus is detected in the test side of dc bus current detector 6, and the output of dc bus current detector 6 connects the dc bus current input of the commutation controller 1-1 in the controller 1,
Three test sides of voltage detecting second divided voltage plate 8 are detected the three-phase voltage of motor side respectively; Three outputs of voltage detecting second divided voltage plate 8 connect three inputs of motor terminal voltage grabber 9 respectively; The output of motor terminal voltage grabber 9 connects the motor terminal voltage input of the inverter controller 1-2 in the controller 1
Three test sides of motor side current detector 7 are detected the three-phase current of motor side respectively, and the output of motor side current detector 7 connects the motor side current input terminal of the inverter controller 1-2 in the controller 1,
Exciting current is detected in the test side of exciting current detector 12, and the output of exciting current detector 12 connects the exciting current input of controller 1 excitation controller 1-3,
The controlled rectification bridge signal output of the rectifier bridge signal output part of commutation controller 1-1 in the controller 1, the inverter bridge signal output part of inverter controller 1-2 and excitation controller 1-3 is connected with the signal input part of rectifier bridge 2, the signal input part of inverter bridge 3 and the signal input part of three-phase controlled rectification bridge 13 respectively.
The output of controller 1 can connect by the ARM host computer;
Rectifier bridge 2 in the major loop all uses thyristor as main switching device with inverter bridge 3; Reduce ripple by smoothing reactor 4 effects behind line voltage process rectifier bridge 2 three-phase controlled rectifications and input to inverter bridge 3; The threephase stator of motor is directly received in the output of inverter bridge 3, the exciting current that excitation unit is needed by three-phase controlled rectification bridge 13 outputs.
Embodiment two: this execution mode and embodiment one difference are that voltage detecting second divided voltage plate 8 is made up of AB voltage detecting second divided voltage plate circuit, AC voltage detecting second divided voltage plate circuit and BC voltage detecting second divided voltage plate circuit; The A that two inputs of AB voltage detecting second divided voltage plate circuit connect three phase mains respectively mutually with B mutually, be used to detect said A mutually and the voltage difference of B between mutually, the output of AB voltage detecting second divided voltage plate circuit is exported the AB voltage division signal; The A that two inputs of AC voltage detecting second divided voltage plate circuit connect three phase mains respectively mutually with C mutually, be used to detect said A mutually and the voltage difference of B between mutually, the output of AC voltage detecting second divided voltage plate circuit is exported the AC voltage division signal; The B that two inputs of BC voltage detecting second divided voltage plate circuit connect three phase mains respectively mutually with C mutually, be used to detect said A mutually and the voltage difference of B between mutually, the output of BC voltage detecting second divided voltage plate circuit is exported the BC voltage division signal.Voltage detecting second divided voltage plate 8 is that motor terminal voltage is carried out after the big electric resistance partial pressure, carries out second divided voltage and carries out voltage isolation and handle at the voltage sample plate.Other composition is identical with embodiment one with connected mode.
Embodiment three: combine Fig. 4 that this execution mode is described; This execution mode is that with embodiment two differences the composition and the connected mode of AB voltage detecting second divided voltage plate circuit, AC voltage detecting second divided voltage plate circuit and BC voltage detecting second divided voltage plate circuit are identical, and wherein AB voltage detecting second divided voltage plate circuit comprises first resistance R the 1 to the 11 resistance R 11, swept resistance P1, the first chip U1, the second chip U2, first capacitor C, 1 to the 4th capacitor C 4;
One end of first resistance R 1 is an input UA of voltage detecting second divided voltage plate circuit; The other end of first resistance R 1 is connected with an end of second resistance R 2; The other end of second resistance R 2 is connected with an end of the 3rd resistance R 3; The other end of the 3rd resistance R 3 is connected with an end of the 4th resistance R 4, and the other end of the 4th resistance R 4 is connected with an end of the 5th resistance R 5, and the other end of the 5th resistance R 5 is connected with an end of the 6th resistance R 6 and the pin 5 of first chip simultaneously; The other end of the 6th resistance R 6 is connected to form another input UB of voltage detecting second divided voltage plate circuit simultaneously with the pin one of the end of the 8th resistance and first chip
The pin 3 of the pin two of the first chip U1 and the first chip U1 is connected with two fixed ends of swept resistance P1 respectively; The moved end of swept resistance P1 is connected with an end of the 7th resistance R 7; The other end of the 7th resistance R 7 is connected with the other end of the 8th resistance R 8, and the pin 8 of the first chip U1 is the SYNC end, and the pin 6 of the first chip U1 meets supply voltage VDD; The pin 7 of the first chip U1 meets power cathode VSS; One end of the pin 9 of the first chip U1 and the 9th resistance R 9 meets power supply ground GND simultaneously, and an end of the other end of the 9th resistance R 9 and the tenth resistance R 10 is connected with the pin one 0 of the first chip U1 simultaneously
The other end of the tenth resistance R 10 is connected with an end of first capacitor C 1 and an end of the 11 resistance R 11 simultaneously; The other end of the 11 resistance R 11 is connected with the pin 3 of second chip and an end of second capacitor C 2 simultaneously; Another termination power ground GND of second capacitor C 2; One end of the pin 7 of the second chip U2 and the 3rd capacitor C 3 connects+12V voltage simultaneously, another termination power ground GND of the 3rd capacitor C 3, and an end of the pin 4 of the second chip U2 and the 4th capacitor C 4 connects-12V voltage simultaneously; Another termination power ground GND of the 4th capacitor C 4, the pin 6 of the second chip U2 and the other end of first capacitor C 1 are connected to output U_AB.
The first chip U1 adopts the chip of the 289J model of INTRONICS production, and the model that the second chip U2 adopts PHILIPS to produce is a NE5532 high-performance low-noise dual operational amplifier.
Other composition is identical with embodiment two with connected mode.
Embodiment four: this execution mode is that with embodiment one, two or three differences motor terminal voltage grabber 9 comprises three groups of circuit; Every group of circuit includes that zero crossing detects catches modulate circuit and voltage magnitude detection modulate circuit; Zero crossing detects catches the zero crossing of back electromotive force that modulate circuit is used for zero crossing and the motor of detection of grid voltage, and voltage magnitude detection modulate circuit is used for the amplitude of back electromotive force of amplitude and the motor of detection of grid voltage.The signal of obtaining gets into after the overvoltage modulate circuit carries out filtering, and one the road enters into the AD sample circuit is used for the amplitude detection, and one the road enters into capture circuit, is used for rotor position detection.Other composition is identical with embodiment one, two or three with connected mode.
Embodiment five: combine Fig. 5 that this execution mode is described, this execution mode is that with embodiment four differences the modulate circuit of catching that zero crossing detects comprises the 12 resistance WR1 to the 18 resistance AR1, the 5th capacitor C Y1 to the ten capacitor C Y6, the 3rd chip YU1A, four-core sheet YU1B, the 5th chip YU2A, the first diode YD1, the second diode YD2 and not circuit U52C;
The end of the 12 resistance WR1 is the input UAB_IN1 that catches modulate circuit that zero crossing detects; The other end of the 12 resistance WR1 is connected with the end of the 13 resistance YR1 and the end of the 5th capacitor C Y1 simultaneously; The termination power ground GND of the other end of the 5th capacitor C Y1 and the 6th capacitor C Y2; The other end of the 6th capacitor C Y2 is connected with the other end of the 13 resistance YR1 and the pin 3 of the 3rd chip YU1A simultaneously; The pin 8 company+12V power supplys of the 3rd chip YU1A; The pin 4 company-12V power supplys of the 3rd chip YU1A; The pin two of the 3rd chip YU1A is connected with the end of the 14 resistance YR3 with the pin one of the 3rd chip YU1A simultaneously; The other end of the 14 resistance YR3 is connected with the end of the 15 resistance YR4, the pin 6 of four-core sheet YU1B, the end of the 7th electric capacity YC3, the end of the 8th electric capacity YC4 and the end of the 9th electric capacity YC5 simultaneously; The pin 5 of four-core sheet YU1B meets power supply ground GND, and the other end of the other end of the other end of the 7th electric capacity YC3, the 8th electric capacity YC4, the other end of the 9th electric capacity YC5, the 15 resistance YR4 and the end of the 16 resistance YR5 are connected with the pin 7 of four-core sheet YU1B simultaneously, and the other end of the 16 resistance YR5 is connected with the end of the 18 resistance AR1, the pin 3 of the 5th chip YU2A and the end of the tenth capacitor C Y6 simultaneously; The pin two of the other end of the tenth capacitor C Y6 and the 5th chip YU2A meets power supply ground GND; The pin 8 of the 5th chip YU2A connects+the 12V power supply, and the pin 4 of the 5th chip YU2A connects-the 12V power supply, and the pin one of the 5th chip YU2A connects the other end of the 18 resistance AR1 and the end of the 17 resistance YR6 simultaneously; Other end while and the anode of the first diode YD1, the negative electrode of the second diode YD2 and the input of not circuit U52C of the 17 resistance YR6; The negative electrode of the first diode YD1 connects the 3V3 power supply, and the anode of the second diode YD2 meets power supply ground GND, and the output of not circuit U52C is the output of catching modulate circuit that zero crossing detects.
The model that the 3rd chip YU1A, four-core sheet YU1B and the 5th chip YU2A all adopt PHILIPS to produce is a NE5532 high-performance low-noise dual operational amplifier.
Other composition is identical with embodiment four with connected mode.
Embodiment six: combine Fig. 6 that this execution mode is described, this execution mode is that with embodiment four differences voltage magnitude detects modulate circuit and comprises the 19 resistance WR2 to the 26 resistance YR13, the 11 capacitor C Y7 to the 13 capacitor C Y9, the 9th chip YU2B, the tenth chip YU3A, the 11 chip YU3B, the 3rd diode YD3 and the 4th diode YD4;
The end of the 19 resistance WR2 is the input UAB_IN2 that voltage magnitude detects modulate circuit; The other end of the 19 resistance WR2 is connected with the end of the 20 resistance YR7 and the end of the 11 capacitor C Y7 simultaneously; The termination power ground GND of the other end of the 11 capacitor C Y7 and the 12 capacitor C Y8; The other end of the 12 capacitor C Y8 is connected with the other end of the 20 resistance YR7 and the pin 5 of the 9th chip YU2B simultaneously; The pin 6 of the 9th chip YU2B is connected with the end of the 21 resistance GG1 with the pin of the 9th chip YU2B 7 simultaneously; The other end of the 21 resistance GG1 is connected with the end of the 13 capacitor C Y9, the end of the 22 resistance YR9 and the pin two of the tenth chip YU3A simultaneously, and the pin 3 of the tenth chip YU3A meets power supply ground GND
The pin one of the other end of the 13 capacitor C Y9, the other end of the 22 resistance YR9 and the tenth chip YU3A is connected with the end of the 23 resistance YR10 simultaneously,
The other end of the 23 resistance YR10 is connected with the end of the 25 resistance YR12, the pin 6 of the 11 chip YU3B and the end of the 24 resistance YR11 simultaneously, another termination-1V5 power supply of the 24 resistance YR11,
The pin 5 of the 11 chip YU3B meets power supply ground GND,
The pin 7 of the 11 chip YU3B connects the other end of the 25 resistance YR12 and the end of the 26 resistance YR13 simultaneously; The other end of the 26 resistance YR13 is connected to the output Uab that is used for voltage magnitude detection modulate circuit with the anode of the 3rd diode YD3, the negative electrode of the 4th diode YD4 simultaneously; The negative electrode of the 3rd diode YD3 connects the 3V3 power supply, and the anode of the 4th diode YD4 meets power supply ground GND.
The model that the 9th chip YU2B, the tenth chip YU3A and the 11 chip YU3B all adopt PHILIPS to produce is a NE5532 high-performance low-noise dual operational amplifier.
Other composition is identical with embodiment four with connected mode.
The utility model content is not limited only to the content of above-mentioned each execution mode, and the combination of one of them or several embodiments equally also can realize the purpose of utility model.
When motor speed be lower than rated speed 6% the time adopt self-supporting pulse control mode starting motor; Make the motor machine slowly accelerate to 6% rated speed; Adjustment through control algolithm makes the output of frequency converter can guarantee to give the torque of motor positive direction, and keeps the convergence of trigger impulse and motor speed relative position.
Can confirm the trigger impulse of thyristor during greater than 6% rated value through the back electromotive force that motor terminal voltage grabber 9 is caught motor when motor speed, this moment, thyristor adopted the uncontious commutation mode, caught from self-supporting pulse to back electromotive force and was referred to as switching point 1.
Motor speed is during less than 8% rated speed, and thyristor adopts the uncontious commutation mode, and thyristor transfers the load current-change form to by uncontious commutation when treating motor speed greater than 8% rated speed, is referred to as switching point 2 here.
Thereby realize the frequency control and the soft start of commutatorless machine through adjusting to motor stator currents and exciting current size.
Before switching point 1, adopt self-supporting pulse mode, through rational algorithm controls starting current and trigger impulse frequency change rate to guarantee moving rotor 6% of rated speed under the out-of-step free situation of motor; Rotating speed adopts the electric rotor position detection more than 6%, can move motor to rated speed.Through rational inverterangle control strategy, switching point 1 rush of current is controlled in the allowed band, and makes the impact of switching point 2 drive currents level off to zero.
Be captured as switching point 1 from self-supporting pulse to back electromotive force, it is switching point 2 that uncontious commutation transfers the load current-change form to.After self-supporting pulse is moved motor to certain rotating speed, get into switching point 1,, can make that through specific trigger impulse given way the rush of current of switching point 1 is as far as possible little at switching point 1.At switching point 2, promptly uncontious commutation is to load current-change, and traditional inversion angle given way can produce very big impulse current; Thereby native system adopts the mode at constant inversion angle; Promptly at switching point 2, under the prerequisite that guarantees change of current remaining, it is constant making the inversion angle as far as possible; This mode can let the impact of dc bus current very little, has avoided violent pulsation because of torque to the infringement of electric system and the risk of starting device overcurrent.
Claims (8)
1. the position-sensorless control device of a mesohigh commutatorless machine is characterized in that it comprises controller (1), ac bus current detector (5), dc bus current detector (6), motor side current detector (7), voltage detecting second divided voltage plate (8), motor terminal voltage grabber (9), voltage transformer (10), voltage magnitude detector (11) and exciting current detector (12); Controller (1) comprises commutation controller (1-1), inverter controller (1-2) and excitation controller (1-3); Three test sides of ac bus current detector (5) are detected the three-phase current of ac bus respectively; The output of ac bus current detector (5) connects the ac bus current input terminal of the commutation controller (1-1) in the controller (1); Three test sides of voltage transformer (10) are detected the three-phase voltage of ac bus respectively; Three outputs of voltage transformer (10) connect three inputs of voltage magnitude detector (11) respectively; The output of voltage magnitude detector (11) connects the ac bus voltage input end of the commutation controller (1-1) in the controller (1); The electric current of dc bus is detected in the test side of dc bus current detector (6); The output of dc bus current detector (6) connects the dc bus current input of the commutation controller (1-1) in the controller (1); Three test sides of voltage detecting second divided voltage plate (8) are detected the three-phase voltage of motor side respectively; Three outputs of voltage detecting second divided voltage plate (8) connect three inputs of motor terminal voltage grabber (9) respectively; The output of motor terminal voltage grabber (9) connects the motor terminal voltage input of the inverter controller (1-2) in the controller (1); Three test sides of motor side current detector (7) are detected the three-phase current of motor side respectively; The output of motor side current detector (7) connects the motor side current input terminal of the inverter controller (1-2) in the controller (1); Exciting current is detected in the test side of exciting current detector (12), and the output of exciting current detector (12) connects the exciting current input of controller (1) excitation controller (1-3), and the controlled rectification bridge signal output of the rectifier bridge signal output part of the commutation controller (1-1) in the controller (1), the inverter bridge signal output part of inverter controller (1-2) and excitation controller (1-3) is connected with the signal input part of rectifier bridge (2), the signal input part of inverter bridge (3) and the signal input part of three-phase controlled rectification bridge (13) respectively.
2. the position-sensorless control device of a kind of mesohigh commutatorless machine according to claim 1 is characterized in that voltage detecting second divided voltage plate (8) is made up of AB voltage detecting second divided voltage plate circuit, AC voltage detecting second divided voltage plate circuit and BC voltage detecting second divided voltage plate circuit; The A that two inputs of AB voltage detecting second divided voltage plate circuit connect three phase mains respectively mutually with B mutually, be used to detect said A mutually and the voltage difference of B between mutually, the output of AB voltage detecting second divided voltage plate circuit is exported the AB voltage division signal; The A that two inputs of AC voltage detecting second divided voltage plate circuit connect three phase mains respectively mutually with C mutually, be used to detect said A mutually and the voltage difference of B between mutually, the output of AC voltage detecting second divided voltage plate circuit is exported the AC voltage division signal; The B that two inputs of BC voltage detecting second divided voltage plate circuit connect three phase mains respectively mutually with C mutually, be used to detect said A mutually and the voltage difference of B between mutually, the output of BC voltage detecting second divided voltage plate circuit is exported the BC voltage division signal.
3. the position-sensorless control device of a kind of mesohigh commutatorless machine according to claim 2; It is characterized in that AB voltage detecting second divided voltage plate circuit, AC voltage detecting second divided voltage plate circuit are identical with connected mode with the composition of BC voltage detecting second divided voltage plate circuit, wherein AB voltage detecting second divided voltage plate circuit comprises that first resistance (R1) to the 11 resistance (R11), swept resistance (P1), first chip (U1), second chip (U2), first electric capacity (C1) are to the 4th electric capacity (C4); One end of first resistance (R1) is an input UA of voltage detecting second divided voltage plate circuit; The other end of first resistance (R1) is connected with an end of second resistance (R2); The other end of second resistance (R2) is connected with an end of the 3rd resistance (R3); The other end of the 3rd resistance (R3) is connected with an end of the 4th resistance (R4); The other end of the 4th resistance (R4) is connected with an end of the 5th resistance (R5); The other end of the 5th resistance (R5) is connected with an end of the 6th resistance (R6) and the pin 5 of first chip (U1) simultaneously; The other end of the 6th resistance (R6) is connected to form another input UB of voltage detecting second divided voltage plate circuit simultaneously with the pin one of end of the 8th resistance (R8) and first chip (U1), the pin 3 of the pin two of first chip (U1) and first chip (U1) is connected with two fixed ends of swept resistance (P1) respectively, and the moved end of swept resistance (P1) is connected with an end of the 7th resistance (R7); The other end of the 7th resistance (R7) is connected with the other end of the 8th resistance (R8); The pin 8 of first chip (U1) is the SYNC end, and the pin 6 of first chip (U1) meets supply voltage VDD, and the pin 7 of first chip (U1) meets power cathode VSS; One end of the pin 9 of first chip (U1) and the 9th resistance (R9) meets power supply ground GND simultaneously; One end of the other end of the 9th resistance (R9) and the tenth resistance (R10) is connected with the pin one 0 of first chip (U1) simultaneously, and the other end of the tenth resistance (R10) is connected with an end of first electric capacity (C1) and an end of the 11 resistance (R11) simultaneously, and the other end of the 11 resistance (R11) is connected with the pin 3 of second chip (U2) and an end of second electric capacity (C2) simultaneously; Another termination power ground GND of second electric capacity (C2); One end of the pin 7 of second chip (U2) and the 3rd electric capacity (C3) connects+12V voltage simultaneously, another termination power ground GND of the 3rd electric capacity (C3), and an end of the pin 4 of second chip (U2) and the 4th electric capacity (C4) connects-12V voltage simultaneously; Another termination power ground GND of the 4th electric capacity (C4), the other end of the pin 6 of second chip (U2) and first electric capacity (C1) is connected to output U_AB.
4. according to the position-sensorless control device of claim 1,2 or 3 described a kind of mesohigh commutatorless machines; It is characterized in that motor terminal voltage grabber (9) comprises three groups of circuit; Every group of circuit includes that zero crossing detects catches modulate circuit and voltage magnitude detection modulate circuit; Zero crossing detects catches the zero crossing of back electromotive force that modulate circuit is used for zero crossing and the motor of detection of grid voltage, and voltage magnitude detection modulate circuit is used for the amplitude of back electromotive force of amplitude and the motor of detection of grid voltage.
5. the position-sensorless control device of a kind of mesohigh commutatorless machine according to claim 4 is characterized in that the modulate circuit of catching that zero crossing detects comprises the 12 resistance (WR1) to the 18 resistance (AR1), the 5th electric capacity (CY1) to the tenth electric capacity (CY6), the 3rd chip (YU1A), four-core sheet (YU1B), the 5th chip (YU2A), first diode (YD1), second diode (YD2) and not circuit (U52C); One end of the 12 resistance (WR1) is the input UAB_IN1 that catches modulate circuit that zero crossing detects; The other end of the 12 resistance (WR1) is connected with an end of the 13 resistance (YR1) and an end of the 5th electric capacity (CY1) simultaneously; One termination power ground GND of the other end of the 5th electric capacity (CY1) and the 6th electric capacity (CY2); The other end of the 6th electric capacity (CY2) is connected with the other end of the 13 resistance (YR1) and the pin 3 of the 3rd chip (YU1A) simultaneously; The pin 8 company+12V power supplys of the 3rd chip (YU1A); The pin 4 company-12V power supplys of the 3rd chip (YU1A); The pin two of the 3rd chip (YU1A) is connected with an end of the 14 resistance (YR3) with the pin one of the 3rd chip (YU1A) simultaneously; The other end of the 14 resistance (YR3) is connected with an end of the 15 resistance (YR4), the pin 6 of four-core sheet (YU1B), an end of the 7th electric capacity (YC3), an end of the 8th electric capacity (YC4) and an end of the 9th electric capacity (YC5) simultaneously; The pin 5 of four-core sheet (YU1B) meets power supply ground GND; One end of the other end of the other end of the other end of the 7th electric capacity (YC3), the 8th electric capacity (YC4), the 9th electric capacity (YC5), the other end of the 15 resistance (YR4) and the 16 resistance (YR5) is connected with the pin 7 of four-core sheet (YU1B) simultaneously; The other end of the 16 resistance (YR5) is connected with an end of the 18 resistance (AR1), the pin 3 of the 5th chip (YU2A) and an end of the tenth electric capacity (CY6) simultaneously, and the pin two of the other end of the tenth electric capacity (CY6) and the 5th chip (YU2A) meets power supply ground GND, and the pin 8 of the 5th chip (YU2A) connects+the 12V power supply; The pin 4 of the 5th chip (YU2A) connects-the 12V power supply; The pin one of the 5th chip (YU2A) connects the other end of the 18 resistance (AR1) and an end of the 17 resistance (YR6) simultaneously, other end while and the anode of first diode (YD1), the negative electrode of second diode (YD2) and the input of not circuit (U52C) of the 17 resistance (YR6), and the negative electrode of first diode (YD1) connects the 3V3 power supply; The anode of second diode (YD2) meets power supply ground GND, and the output of not circuit (U52C) is the output of catching modulate circuit that zero crossing detects.
6. the position-sensorless control device of a kind of mesohigh commutatorless machine according to claim 4 is characterized in that voltage magnitude detects modulate circuit and comprises that the 19 resistance (WR2) is to the 26 resistance (YR13), the 11 electric capacity (CY7) to the 13 electric capacity (CY9), the 9th chip (YU2B), the tenth chip (YU3A), the 11 chip (YU3B), the 3rd diode (YD3) and the 4th diode (YD4); One end of the 19 resistance (WR2) is the input UAB_IN2 that voltage magnitude detects modulate circuit; The other end of the 19 resistance (WR2) is connected with an end of the 20 resistance (YR7) and an end of the 11 electric capacity (CY7) simultaneously; One termination power ground GND of the other end of the 11 electric capacity (CY7) and the 12 electric capacity (CY8); The other end of the 12 electric capacity (CY8) is connected with the other end of the 20 resistance (YR7) and the pin 5 of the 9th chip (YU2B) simultaneously; The pin 6 of the 9th chip (YU2B) is connected with an end of the 21 resistance (GG1) with the pin 7 of the 9th chip (YU2B) simultaneously; The other end of the 21 resistance (GG1) is connected with an end of the 13 electric capacity (CY9), an end of the 22 resistance (YR9) and the pin two of the tenth chip (YU3A) simultaneously; The pin 3 of the tenth chip (YU3A) meets power supply ground GND; The pin one of the other end of the 13 electric capacity (CY9), the other end of the 22 resistance (YR9) and the tenth chip (YU3A) is connected with an end of the 23 resistance (YR10) simultaneously; The other end of the 23 resistance (YR10) is connected with an end of the 25 resistance (YR12), the pin 6 of the 11 chip (YU3B) and an end of the 24 resistance (YR11) simultaneously; Another termination-1V5 power supply of the 24 resistance (YR11); The pin 5 of the 11 chip (YU3B) meets power supply ground GND, and the pin 7 of the 11 chip (YU3B) connects the other end of the 25 resistance (YR12) and an end of the 26 resistance (YR13) simultaneously, and the other end of the 26 resistance (YR13) is connected to the output Uab that voltage magnitude detects modulate circuit with the anode of the 3rd diode (YD3), the negative electrode of the 4th diode (YD4) simultaneously; The negative electrode of the 3rd diode (YD3) connects the 3V3 power supply, and the anode of the 4th diode (YD4) meets power supply ground GND.
7. according to the position-sensorless control device of claim 5 or 6 described a kind of mesohigh commutatorless machines, it is characterized in that controller (1) adopts the TI DSP2812 of company digital signal processor.
8. the position-sensorless control device of a kind of mesohigh commutatorless machine according to claim 7; It is characterized in that first chip (U1) adopts the chip of the 289J model of INTRONICS production, the model that second chip (U2), the 3rd chip (YU1A), four-core sheet (YU1B), the 5th chip (YU2A), the 9th chip (YU2B), the tenth chip (YU3A) and the 11 chip (YU3B) all adopt PHILIPS to produce is a NE5532 high-performance low-noise dual operational amplifier.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202506796U CN202565217U (en) | 2012-05-31 | 2012-05-31 | Control device without position sensor for medium-high voltage motor without commutator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202506796U CN202565217U (en) | 2012-05-31 | 2012-05-31 | Control device without position sensor for medium-high voltage motor without commutator |
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| CN202565217U true CN202565217U (en) | 2012-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664572A (en) * | 2012-05-31 | 2012-09-12 | 哈尔滨同为电气股份有限公司 | Position sensorless control device of medium and high-voltage commutatorless motor |
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- 2012-05-31 CN CN2012202506796U patent/CN202565217U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664572A (en) * | 2012-05-31 | 2012-09-12 | 哈尔滨同为电气股份有限公司 | Position sensorless control device of medium and high-voltage commutatorless motor |
| CN102664572B (en) * | 2012-05-31 | 2015-07-08 | 哈尔滨同为电气股份有限公司 | Position sensorless control device of medium and high-voltage commutatorless motor |
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