CN102291009A - Motor driving power supply for rotary sidewall sampler - Google Patents
Motor driving power supply for rotary sidewall sampler Download PDFInfo
- Publication number
- CN102291009A CN102291009A CN2011102198691A CN201110219869A CN102291009A CN 102291009 A CN102291009 A CN 102291009A CN 2011102198691 A CN2011102198691 A CN 2011102198691A CN 201110219869 A CN201110219869 A CN 201110219869A CN 102291009 A CN102291009 A CN 102291009A
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- low frequency
- phase
- modulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The invention relates to a motor driving power supply for a rotary sidewall sampler. The driving power supply comprises a power factor correction unit, a voltage regulation unit, a modulation boosting unit, a filtering demodulation unit, an inverting commutation unit, a two-phase signal generation unit and a control unit, wherein the power factor correction unit performs power factor correction on a single-phase AC power signal to obtain a first DC signal; the voltage regulation unit receives a frequency setting control signal, and performs voltage regulation on the first DC signal to obtain a second DC signal; the modulation boosting unit receives a sinusoidal pulse width modulation signal, and converts a second power signal into a first high voltage low frequency waveform signal; the filtering demodulation unit filters the first high voltage low frequency waveform signal to obtain a second high voltage low frequency waveform signal; the inverting commutation unit receives a commutation driving pulse signal, and performs inverting commutation processing on the second high voltage low frequency waveform signal to obtain a low frequency sinusoidal signal; the two-phase signal generation unit performs phase output control processing on the low frequency sinusoidal signal to obtain a two-phase low frequency sinusoidal signal; and the control unit generates the frequency setting control signal, the sinusoidal pulse width modulation signal and the commutation driving pulse signal according to load current. The power supply can supply power directly by using a generator on a logger vehicle.
Description
Technical field
The invention relates to the geological exploration techniques field, especially about the logging technique field of petroleum geology exploration and metal mineral reserves exploration, be a kind of RSCT motor drive power supply of powering specifically about the generator that can directly use on the logger car.
Background technology
Logging technique field in petroleum geology exploration and metal mineral reserves exploration utilizes core analysis to determine that the lithology of reservoir, physical parameter are an important job.At present, being used to the rock core analyzed can obtain by drilling and coring delivery, blast impacting type sidewall coring, three kinds of modes of drilling type sidewall coring.Drilling and coring delivery construction actual effect is low, cost is high and influence rate of penetration; Blast impacting type sidewall coring institute coring is subjected to the infringement of core barrel bump, is unfavorable for the physical analysis chemical examination, can not get reservoir parameters such as porosity and permeability; The drilling type sidewall coring adopts hydraulic transmission technology, make the vertical drilling type borehole wall of hollow boring bit obtain rock core, little to the infringement of the original rerum natura of rock core, can by instrument carry out lithology, electrically, rerum natura and oiliness analytical test, ask for reservoir parameters such as porosity, permeability.
The operation principle of RSCT is, the ground large power supply drives a hydraulic pump generation hydraulic power by the 2500W-3000W heavy-duty motor that 7000 meters armoured cables drive the down-hole, driving the motor of coring by high-pressure and hydraulic oil again cores, therefore, one of critical component of RSCT is the high-power AC motor that is used for driving hydraulic pump works.It is that 850V, frequency are that the phase difference of 50Hz, two-phase is 90 ° a AC power that motor requires the ground driving power that voltage is provided.The motor reliable driving power is the basis that guarantees the motor operate as normal.At present, RSCT has following shortcoming for providing the power supply of driving:
One: the two-way AC power that the required phase difference of motor is 90 ° is to obtain by three phase mains, because the vehicle-mounted generator of logger is single-phase generator, therefore existing motor can't adopt the logger mobile generator, other generators that must rely on situ of drilling well provide electric power, can't obtain required power supply in the different area of power supply specification like this, thereby influence coring operation, and the instability of the frequency of on-site generated power machine, voltage all can influence the success rate of coring operation.
Two: have between down-hole heavy-duty motor and the surface power supply power supply to reach 7000 meters armoured cable, common single cable core internal resistance is up to more than 200 ohm, during electric motor starting big electric current with motor terminal voltage draw the very low detent torque that influences motor, and the load increase can cause Motor torque to descend in coring operation, when serious even can cause the failure of coring, when the instrument temperature of coring is low, can cause thicker hydraulic oil can't start phenomenon in addition.
Three: under the condition of high temperature, hydraulic oil is thinning, needs to improve hydraulic pump pump amount, reveals the underpower situation that causes because of hydraulic oil with compensation.The frequency of existing motor power supply relies on the frequency of well site generator, is power frequency 50Hz, can't improve rotating speed according to the corresponding adjusting machine operation of hydraulic pump flow frequency, has reduced the success rate of coring in abominable subsurface environment.
Four: existing sidewall coring system boosts by low-frequency transformer, and means such as voltage regulator adjusting realize the adjustable power supply of high voltage.For the linear regulated power supply of 10KW, volume and weight is all very huge, carrying inconvenience, and the conversion efficiency of linear power supply is lower than 50%, and energy waste is serious.
The problem that is produced when using the motor power that linear power supply uses as the drilling type sidewall coring in order to solve in the prior art, a kind of good mode adopts variable frequency power supply exactly, because the variable frequency power supply volume is little, and changeable frequency, so performance is better.At present, in other industrial circle,, there has been variable frequency power supply such as industry manufacturing etc.But the variable frequency power supply of using in the other field but can't be applicable to the drilling type sidewall coring process in petroleum geology exploration and the metal mineral reserves exploration field at present.This be because, present existing variable frequency power supply is the same with above-mentioned linear power supply, what still adopt is three-phase alternating current input, like this, then still can produce the problem identical with above-mentioned linear power supply.And, existing variable frequency power supply is not owing to be the drilling type sidewall coring field that is applied to petroleum geology exploration and metal mineral reserves exploration, therefore, the characteristics that it also exists input and output not isolate and finally export the high frequency three-phase signal, and these characteristics can't satisfy distinctive input and output insulation request in the drilling type sidewall coring process, and the phase difference of output two-phase is the requirement of 90 ° low frequency signal.
Summary of the invention
For frequency, the change in voltage that overcomes well site generator in the prior art influences the problem of coring operation success rate, the invention provides a kind of RSCT motor drive power supply, can directly use the mobile generator on the logger car to power.
The invention provides a kind of driving power of RSCT motor, the driving power of described RSCT motor comprises power factor correction unit, voltage-regulation unit, modulation boosting unit, demodulation by filter unit, inversion reversing unit, two phase signals generation unit and control units, wherein: power factor correction unit, be used to receive the single-phase alternating current source signal of outside input, described single-phase alternating current source signal is carried out power factor correction, obtain first direct current signal, described first direct current signal is input to the voltage-regulation unit; The voltage-regulation unit, be used to receive the frequency setting control signal of control unit output, according to described frequency setting control signal described first direct current signal is carried out pressure regulation, obtain the second required direct current signal of load, export second direct current signal to the modulation boosting unit; The modulation boosting unit is used to receive the sinusoid pulse width modulation modulation signal that control unit is exported, and is the first high pressure low frequency waveform signal according to described drive pulse signal with described second source conversion of signals; The demodulation by filter unit is used for the described first high pressure low frequency waveform signal is carried out filtering, obtains the second high pressure low frequency waveform signal; The inversion reversing unit is used to receive the commutation drive pulse signal that control unit is exported, and according to described drive pulse signal the described second high pressure low frequency waveform signal is carried out inverse transformation to processing, obtains the low frequency sinusoidal signal; Two phase signals generation units are used for described low frequency sinusoidal signal is carried out phase place output control and treatment, obtain two-phase low frequency sinusoidal signal; Control unit is used for setting control signal, sinusoid pulse width modulation modulation signal and commutation drive pulse signal according to the load current generated frequency.
RSCT motor drive power supply provided by the invention has solved the frequency, change in voltage of the well site generator problem that influences to the coring operation success rate, has solved the problem of carrying out coring operation in the different area of power supply specification.
RSCT provided by the invention adopts single-phase input with motor drive power supply, therefore the single-phase alternator that can use the logger car to carry is powered as motor drive power supply, the low frequency signal that direct output motor driving power can be used, solved the frequency, change in voltage of well site generator the problem that influences to the coring operation success rate, solved simultaneously in the different area of power supply specification and can't obtain required power supply, thereby can't carry out the problem of coring operation.
RSCT provided by the invention can be contained in 19 cun standard PC cases of 6U with motor drive power supply, and volume is little, and is in light weight, convenient in carrying.
RSCT provided by the invention can not be subjected to the influence of generator voltage, frequency according to the operating voltage and the frequency of cable length and downhole instrument working condition adjusting motor with motor drive power supply.In the thicker startup of hydraulic oil at need, can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit, thereby realize frequency reducing, improve the Motor torque of coring, can carry out high moment of torsion variable frequency starting, so that reach the purpose that the motor of coring is started by long cable cold oil; Can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit simultaneously, improve the output frequency of power supply, improve the motor speed of coring, increase the hydraulic pump flow, solved under the condition of high temperature, the thinning hydraulic oil that causes of hydraulic oil is revealed the problem of power of motor deficiency.
RSCT provided by the invention has adopted high frequency transformer with motor drive power supply, input and output are isolated, and output is that the phase difference of two-phase is 90 ° a low frequency signal, overcome the shortcoming that the variable frequency power supply input and output are not isolated and finally exported the high frequency three-phase signal in the prior art, satisfied distinctive input and output insulation request in the drilling type sidewall coring process, and the phase difference of output two-phase is the requirement of 90 ° low frequency signal.
RSCT motor drive power supply provided by the invention, from starting to running again to each operating state of getting core, output voltage and frequency are according to the electric current real-time regulated of the load of motor at motor.In actual job, because a variety of causes, the load variations of motor and difference are very large, and the load variations of motor can reach 5-6 doubly from underloading to the most heavily loaded variation.Because the present invention can regulate output voltage and frequency according to load current, therefore can adapt to the complex working condition of coring apparatus device motor, avoid the power that motor needs in the prior art very big, and power supply is unable to supply, make the power supply load excessive and burn power supply; And the power of avoiding motor to need is not very big, and power supply output is excessive, thereby the loss of cable or the copper loss of motor windings are strengthened, and makes shortcomings such as cable or motor damage.Overcome in the prior art that output voltage and frequency are to immobilize in the variable frequency power supply, can not be according to the problem of the electric current real-time regulated of motor.
RSCT motor drive power supply provided by the invention, this power supply can directly use the generator on the logger car to power, power supply is output as sine wave, can overcome the high frequency attenuation problem that existing variable frequency power supply or the long cable of frequency converter drive generation, also just overcome the shortcoming that general variable frequency power supply or frequency converter need the adapted reactor.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is a kind of RSCT motor drive power supply block diagram that the embodiment of the invention provides.
Fig. 2 is the block diagram of the modulation boosting unit 103 that provides of the embodiment of the invention.
Figure 3 shows that the RSCT heavy-duty motor driving power structure chart that the embodiment of the invention provides.
Fig. 4 is the PFC topological diagram in parallel that the embodiment of the invention provides.
Fig. 5 is the BUCK voltage regulating module schematic diagram that the embodiment of the invention provides.
Fig. 6 is the Sine Modulated boost module principle schematic that the embodiment of the invention provides.
Fig. 7 is the drive pulse waveform figure that the embodiment of the invention provides.
Fig. 8 is the primary high frequency waveforms schematic diagram that the embodiment of the invention provides.
Fig. 9 is the low-frequency high-voltage signal waveform schematic diagram that the embodiment of the invention provides.
Figure 10 is that the inverse transformation that provides of the embodiment of the invention is to the module principle schematic diagram.
Figure 11 is commutation drive signal and the sinusoidal modulation signal graph of a relation that the embodiment of the invention provides.
Figure 12 is the low frequency sinusoidal signal that the embodiment of the invention provides.
Figure 13 is the final output waveform figure of system that the embodiment of the invention provides.
Figure 14 shows that the RSCT motor drive power supply schematic diagram that the embodiment of the invention provides.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in further details below in conjunction with execution mode and accompanying drawing.At this, exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The embodiment of the invention provides a kind of RSCT motor drive power supply that can directly use the generator on the logger car to power, and the present invention is described in detail below in conjunction with accompanying drawing.
Embodiment one
Fig. 1 is a kind of RSCT motor drive power supply block diagram that the embodiment of the invention provides, as shown in Figure 1, RSCT comprises with motor drive power supply 100: power factor correction unit 101, voltage-regulation unit 102, modulation boosting unit 103, demodulation by filter unit 104, inversion reversing unit 105, two phase signals generation units 106 and control unit 107, wherein:
Power factor correction unit 101 is used to receive the outside single-phase alternating current source signal of importing, and described single-phase alternating current source signal is carried out power factor correction, obtains first direct current signal, and described first direct current signal is input to the voltage-regulation unit.
In embodiments of the present invention, power factor correction unit 101 can be a PFC (Power Factor Correction-power factor correction) rectification module, specifically, can adopt DPF1000 type power factor correction module as input, because the DPF1000 power factor correction module has only 1500W, so in order to solve the low problem of bringing of power factor, can adopt a plurality of DPF1000 power factor correction module, such as 4 or 6 DPF1000 power factor correction submodules being connected in parallel.Power factor correction unit 101 is the two-phase direct current signal with the single phase alternating current power supply conversion of signals of outside input, and carries out power factor correction, at last corrected two-phase direct current signal is input to voltage-regulation unit 102.
Voltage-regulation unit 102, be used to receive the frequency setting control signal of control unit output, according to described frequency setting control signal described first direct current signal is carried out pressure regulation, obtain the second required direct current signal of load, export second direct current signal to the modulation boosting unit.
In embodiments of the present invention, voltage-regulation unit 102 can be a BUCK (buck DC-DC is a topology substantially) voltage regulating module, the two-phase direct current signal that receives from voltage-regulation unit 102 is carried out pressure regulation, by the control inductance charging interval of electric capacity is realized concrete Regulation Control process, and slowly power up, up to being added to 1500V, and the frequency setting control signal control input and output that send according to the control unit 107 that receives.
In embodiments of the present invention, modulation boosting unit 103 receives the sinusoid pulse width modulation modulation signal of control unit 107 outputs, the dc power signal of voltage-regulation unit 102 output is transformed into the sinusoidal signal of high frequency, then doubly by high frequency transformer step-up ratio such as 5-6.
In embodiments of the present invention, Fig. 2 is the block diagram of the modulation boosting unit 103 that provides of the embodiment of the invention, and as shown in Figure 2, modulation boosting unit 103 can comprise: sinusoidal signal modular converter 201, and boost module 202 and filtration module 203, wherein:
Sinusoidal signal modular converter 201 is used for being converted to the high frequency sinusoidal signal according to second dc power signal that the sinusoid pulse width modulation modulation signal of control unit output is exported voltage-regulation unit 102;
The processing of boosting of boost module 202, the high frequency sinusoidal signal that offset of sinusoidal signal conversion module 201 generates obtains high-frequency signal;
Demodulation by filter unit 104 is used for the described first high pressure low frequency waveform signal is carried out filtering, obtains the second high pressure low frequency waveform signal.
In embodiments of the present invention, demodulation by filter unit 104 high-frequency signal that will modulate boosting unit 103 output becomes low frequency signal, the output low frequency HT waveform through inner filtering.
In embodiments of the present invention, the accept filter low-frequency high-voltage waveform of demodulating unit 104 output of inversion reversing unit 105, and receive the commutation drive pulse signal that control unit is exported, obtain the low frequency sinusoidal signal after according to the commutation drive pulse signal low-frequency high-voltage waveform being commutated.
Two phase signals generation units 106 are used for described low frequency sinusoidal signal is carried out phase place output control and treatment, obtain two-phase low frequency sinusoidal signal.
In embodiments of the present invention, RSCT can comprise two groups of above-mentioned power factor correction units 101, voltage-regulation unit 102, modulation boosting unit 103, demodulation by filter unit 104 and inversion reversing unit 105 with motor drive power supply 100, every group of unit produces one road low frequency sinusoidal signal respectively, and the phase difference of two-way low frequency sinusoidal signal is 90 degree.
In embodiments of the present invention, control unit 107 is set control signal according to the load current generated frequency, and 102 pairs first direct current signals in control voltage-regulation unit carry out pressure regulation, obtain the second required direct current signal of load; Control unit 107 also generates the sinusoid pulse width modulation modulation signal, and control modulation boosting unit 103 is the first high pressure low frequency waveform signal with the second source conversion of signals; Control unit 107 also generates the commutation drive pulse signal, and 105 pairs second high pressure low frequencies of control inversion reversing unit waveform signal carries out inverse transformation to processing, obtains the low frequency sinusoidal signal.
In embodiments of the present invention, control unit 107 is modulated the phase place that the phase place of the Sine Modulated waveform of boosting unit 103 is controlled every road low frequency sinusoidal signal by controlling each road, is 90 degree with the phase difference that guarantees two-way low frequency sinusoidal signal.
RSCT provided by the invention adopts single-phase input with motor drive power supply, therefore the single-phase alternator that can use the logger car to carry is powered as motor drive power supply, the low frequency signal that direct output motor driving power can be used, solved the frequency, change in voltage of well site generator the problem that influences to the coring operation success rate, solved simultaneously in the different area of power supply specification and can't obtain required power supply, thereby can't carry out the problem of coring operation.
RSCT provided by the invention can be contained in 19 cun standard PC cases of 6U with motor drive power supply, and volume is little, and is in light weight, convenient in carrying.
RSCT provided by the invention can not be subjected to the influence of generator voltage, frequency according to the operating voltage and the frequency of cable length and downhole instrument working condition adjusting motor with motor drive power supply.In the thicker startup of hydraulic oil at need, can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit, thereby realize frequency reducing, improve the Motor torque of coring, can carry out high moment of torsion variable frequency starting, so that reach the purpose that the motor of coring is started by long cable cold oil; Can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit simultaneously, improve the output frequency of power supply, improve the motor speed of coring, increase the hydraulic pump flow, solved under the condition of high temperature, the thinning hydraulic oil that causes of hydraulic oil is revealed the problem of power of motor deficiency.
RSCT provided by the invention has adopted high frequency transformer with motor drive power supply, input and output are isolated, and output is single-phase low frequency signal, overcome the shortcoming that the variable frequency power supply input and output are not isolated and finally exported the high frequency three-phase signal in the prior art, satisfied distinctive input and output insulation request in the drilling type sidewall coring process, and the phase difference of output two-phase is the requirement of 90 ° low frequency signal.
RSCT motor drive power supply provided by the invention, power supply is output as sine wave, so can overcome the high frequency attenuation problem that existing variable frequency power supply or the long cable of frequency converter drive generation, also just overcome the shortcoming that general variable frequency power supply or frequency converter need the adapted reactor.
Embodiment two
The RSCT heavy-duty motor driving power that the embodiment of the invention proposes, input can be the alternating voltage of 220V/50Hz, is output as the AC power of 90 ° of two groups of phase phasic differences, its global index is as follows:
Input voltage: single-phase AC180V～AC240V 50Hz;
A phase rated power: 3000W;
A phase output voltage: AC 0V～1200V;
A phase rated current: 3A;
B phase rated power: 3000W;
B phase output voltage: AC 0V～1200V;
B phase rated current: 3A;
Output frequency: 0.1HZ～60HZ;
AB phase angle: 90 °.
The AB two-phase is identical on electrical characteristic, below is the function that example is analyzed each module mutually with any one.
Figure 3 shows that the RSCT heavy-duty motor driving power structure chart that the embodiment of the invention provides, as shown in Figure 3, RSCT comprises with the heavy-duty motor driving power: A, B phase power factor correction (PFC) module 301 and 311, A, B phase BUCK voltage regulating module 302 and 312, A, B phase high frequency Sine Modulated boost module 303 and 313, A, B phase demodulation by filter module 304 and 314, A, B phase inversion output module 305 and 315, control module 306, wherein
A, B phase power factor correction (PFC) module 301 and 311, be respectively applied for from the input of outside reception single-phase electricity, carry out power factor correction, obtain the synchronous direct current signal of voltage and electric current respectively, respectively this direct current signal is input to A, B phase BUCK voltage regulating module 302 and 312.In embodiments of the present invention, power factor is the ratio of actual power and apparent power, or the angle cosine value of input voltage and input current.For pure resistive load, because voltage and electric current are synchronous, angle is 0, so cosine value is 1, promptly power factor is 1, and all apparent power all are converted to actual power.In actual applications, especially the electric machinery load is inductive load, and under the situation of the powerful application scenario and the power limited of input power supply, the low problem of bringing of power factor is particularly outstanding.DPF1000 type power factor correction module has been adopted in the design input of this power supply, and parameter is as follows:
Input voltage: single-phase AC170V～AC250V;
Rated power: 1500W;
Output voltage: DC360V;
Power factor: 95%;
Because the DPF1000 power factor correction module has only 1500W, so in order to solve the low problem of bringing of power factor, the PFC rectification module specifically is by a plurality of, Fig. 4 is the PFC topological diagram in parallel that the embodiment of the invention provides, as shown in Figure 4, can correct submodules by 4 or 6 PFC and be connected in parallel and realize, thereby solve under powered problem.The direct voltage of output 360V is input to A, B phase BUCK voltage regulating module 302 and 312 behind the interchange input PFC correction module.
A, B phase BUCK voltage regulating module 302 and 312, receive the control signal of the setpoint frequency that control module 306 sends respectively, recently control the ON time of BUCK voltage regulating module internal switch pipe respectively by the duty of control signal, thereby regulation voltage is distinguished the required direct current signal of output loading to A, B phase high frequency Sine Modulated boost module 303 and 313.
In embodiments of the present invention, Fig. 5 is the BUCK voltage regulating module schematic diagram that the embodiment of the invention provides, as shown in Figure 5, A, B phase BUCK voltage regulating module 302 and 312 have been finished the function of system's regulation voltage, and A, B phase power factor correction (PFC) module 301 and the direct voltage of the DC360V of 311 outputs are input to A, B BUCK voltage regulating module 302 and 312 mutually.Control module 306 is come control output voltage by the controlling and driving signal.Control module 306 is sent the control signal of a certain frequency, recently controls the ON time of M1 switching tube by the duty of controlling and driving signal, thereby controls input voltage by the charging interval of L1 to C1, reaches the purpose of regulation voltage.Output voltage range is direct current 0～360V.
A, B phase high frequency Sine Modulated boost module 303 and 313, link to each other with control module 306 respectively, receive the driving pulse that control module 306 is sent respectively, the direct current signal that receives is transformed into the sinusoidal signal of high frequency according to this driving pulse, then by the processing of boosting, obtain high-frequency signal, and become low frequency signal through inner filtering, output high pressure low frequency waveform signal is respectively to A, B phase demodulation by filter circuit 304 and 314.
In embodiments of the present invention, Fig. 6 is the Sine Modulated boost module principle schematic that the embodiment of the invention provides, and as shown in Figure 6,4 IGBT switching tube M1-M4 connect according to the full-bridge mode, connects high frequency transformer and the current rectifying and wave filtering circuit that boosts then successively; The direct current of A, B phase BUCK voltage regulating module 302 and 312 outputs is input to this module, and control module 306 is sent the driving pulse that two group pulse width change according to the sinusoidal rule of low frequency, and waveform is controlled M1, M4 and M2, M3 alternate conduction as shown in Figure 7.A in Fig. 6 point place obtains high frequency waveforms as shown in Figure 8 like this.Transformer T1 is the high frequency transformer that boosts, and step-up ratio is 1:5, and then the point of the B in Fig. 6 obtains the high voltagehigh frequency waveform.Through the B1 rectification, after L1, the C1 filtering, obtain the high pressure low frequency waveform with the driving pulse same frequency, as shown in Figure 9.
A, B phase demodulation by filter module 304 and 314 are respectively applied for the high pressure low frequency waveform signal that receives are carried out exporting A, the inverse transformation of B phase respectively to module 305 and 315 after the demodulation by filter.
A, the inverse transformation of B phase receive control module 306 and are issued to driving pulse to module 305 and 315, according to this driving pulse, the high pressure low frequency waveform signal that receives are carried out inverse transformation to processing, obtain the low frequency sinusoidal signal; Current value with the load that collects exports described control module 306 to respectively.
In embodiments of the present invention, Figure 10 be the inverse transformation that provides of the embodiment of the invention to the module principle schematic diagram, Figure 11 is commutation drive signal and the sinusoidal modulation signal graph of a relation that the embodiment of the invention provides.A, B phase high frequency Sine Modulated boost module 303 and 313 is used for A, the dc power signal of B phase BUCK voltage regulating module 302 and 312 outputs is transformed into the sinusoidal signal of high frequency, boost by high frequency transformer then, as 5-6 doubly, the output high-frequency signal, and the inner filtering of process becomes low frequency signal, the low-frequency high-voltage waveform of output is input to the inversion inverting module, low frequency signal as shown in Figure 11, control module 306 is sent two groups of commutation driving pulses synchronous with the Sine Modulated control signal, commutation logic pulse as shown in Figure 11, wherein commutation logic pulse A drives the M1 in the high pressure inverting module, the M4 injectron, commutation logic pulse B drives the M2 in the high pressure inverting module, the M3 injectron.After the commutation of inversion inverting module, obtain the low frequency sinusoidal signal, be illustrated in fig. 12 shown below.
In embodiments of the present invention, A, the inverse transformation of B phase also are used to gather the current value of load to module 305 and 315, and export control module 306 to.Control module 306 also is used for the low frequency sinusoidal signal that A, the inverse transformation of B phase obtain to module 305 and 315 is carried out phase place output control and treatment, and finally exports two-phase low frequency sinusoidal signal; After this two-phase low frequency sinusoidal signal of output, whether the electric current changing value in the given time of judging load according to the current value that receives surpasses predetermined value, if, then control described A, B phase BUCK voltage regulating module 302 and 312 processing of boosting, perhaps control described A, B phase high frequency Sine Modulated boost module 303 and 313 carries out down conversion process; Otherwise, determine the balance point magnitude of voltage, and output has the two-phase low frequency sinusoidal signal of this balance point magnitude of voltage, wherein, balance point magnitude of voltage correspondence increases or when reducing magnitude of voltage, the electric current of load all raises.
RSCT provided by the invention adopts single-phase input with motor drive power supply, therefore the single-phase alternator that can use the logger car to carry is powered as motor drive power supply, the low frequency signal that direct output motor driving power can be used, solved the frequency, change in voltage of well site generator the problem that influences to the coring operation success rate, solved simultaneously in the different area of power supply specification and can't obtain required power supply, thereby can't carry out the problem of coring operation.
RSCT provided by the invention can be contained in 19 cun standard PC cases of 6U with motor drive power supply, and volume is little, and is in light weight, convenient in carrying.
RSCT provided by the invention can not be subjected to the influence of generator voltage, frequency according to the operating voltage and the frequency of cable length and downhole instrument working condition adjusting motor with motor drive power supply.In the thicker startup of hydraulic oil at need, can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit, thereby realize frequency reducing, improve the Motor torque of coring, can carry out high moment of torsion variable frequency starting, so that reach the purpose that the motor of coring is started by long cable cold oil; Can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit simultaneously, improve the output frequency of power supply, improve the motor speed of coring, increase the hydraulic pump flow, solved under the condition of high temperature, the thinning hydraulic oil that causes of hydraulic oil is revealed the problem of power of motor deficiency.
RSCT provided by the invention has adopted high frequency transformer with motor drive power supply, input and output are isolated, and output is single-phase low frequency signal, overcome the shortcoming that the variable frequency power supply input and output are not isolated and finally exported the high frequency three-phase signal in the prior art, satisfied distinctive input and output insulation request in the drilling type sidewall coring process, and the requirement of exporting single-phase low frequency signal.
RSCT motor drive power supply provided by the invention, from starting to running again to each operating state of getting core, output voltage and frequency are according to the electric current real-time regulated of the load of motor at motor.In actual job, because a variety of causes, the load variations of motor and difference are very large, and the load variations of motor can reach 5-6 doubly from underloading to the most heavily loaded variation.Because the present invention can regulate output voltage and frequency according to load current, therefore can adapt to the complex working condition of coring apparatus device motor, avoid the power that motor needs in the prior art very big, and power supply is unable to supply, make the power supply load excessive and burn power supply; And the power of avoiding motor to need is not very big, and power supply output is excessive, thereby the loss of cable or the copper loss of motor windings are strengthened, and makes shortcomings such as cable or motor damage.Overcome in the prior art that output voltage and frequency are to immobilize in the variable frequency power supply, can not be according to the problem of the electric current real-time regulated of motor.
RSCT motor drive power supply provided by the invention, power supply is output as sine wave, so can overcome the high frequency attenuation problem that existing variable frequency power supply or the long cable of frequency converter drive generation, also just overcome the shortcoming that general variable frequency power supply or frequency converter need the adapted reactor.
Embodiment three
Figure 14 shows that the RSCT motor drive power supply use location schematic diagram that the embodiment of the invention provides, as shown in figure 14, logging system 1400 comprises car body 1401, driving power 1402 and logger 1403, wherein, driving power 1402 can be the driving power of the RSCT motor among embodiment one and the embodiment two, does not repeat them here.
RSCT provided by the invention adopts single-phase input with motor drive power supply, therefore the single-phase alternator that can use the logger car to carry is powered as motor drive power supply, the low frequency signal that direct output motor driving power can be used, solved the frequency, change in voltage of well site generator the problem that influences to the coring operation success rate, solved simultaneously in the different area of power supply specification and can't obtain required power supply, thereby can't carry out the problem of coring operation.
RSCT provided by the invention can be contained in 19 cun standard PC cases of 6U with motor drive power supply, and volume is little, and is in light weight, convenient in carrying.
RSCT provided by the invention can not be subjected to the influence of generator voltage, frequency according to the operating voltage and the frequency of cable length and downhole instrument working condition adjusting motor with motor drive power supply.In the thicker startup of hydraulic oil at need, can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit, thereby realize frequency reducing, improve the Motor torque of coring, can carry out high moment of torsion variable frequency starting, so that reach the purpose that the motor of coring is started by long cable cold oil; Can change the sinusoid pulse width modulation modulation signal that the modulation boosting unit receives by control unit simultaneously, improve the output frequency of power supply, improve the motor speed of coring, increase the hydraulic pump flow, solved under the condition of high temperature, the thinning hydraulic oil that causes of hydraulic oil is revealed the problem of power of motor deficiency.
RSCT provided by the invention has adopted high frequency transformer with motor drive power supply, input and output are isolated, and output is single-phase low frequency signal, overcome the shortcoming that the variable frequency power supply input and output are not isolated and finally exported the high frequency three-phase signal in the prior art, satisfied distinctive input and output insulation request in the drilling type sidewall coring process, and the requirement of exporting single-phase low frequency signal.
RSCT motor drive power supply provided by the invention, from starting to running again to each operating state of getting core, output voltage and frequency are according to the electric current real-time regulated of the load of motor at motor.In actual job, because a variety of causes, the load variations of motor and difference are very large, and the load variations of motor can reach 5-6 doubly from underloading to the most heavily loaded variation.Because the present invention can regulate output voltage and frequency according to load current, therefore can adapt to the complex working condition of coring apparatus device motor, avoid the power that motor needs in the prior art very big, and power supply is unable to supply, make the power supply load excessive and burn power supply; And the power of avoiding motor to need is not very big, and power supply output is excessive, thereby the loss of cable or the copper loss of motor windings are strengthened, and makes shortcomings such as cable or motor damage.Overcome in the prior art that output voltage and frequency are to immobilize in the variable frequency power supply, can not be according to the problem of the electric current real-time regulated of motor.
RSCT motor drive power supply provided by the invention, power supply is output as sine wave, so can overcome the high frequency attenuation problem that existing variable frequency power supply or the long cable of frequency converter drive generation, also just overcome the shortcoming that general variable frequency power supply or frequency converter need the adapted reactor.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the driving power of a RSCT motor, it is characterized in that, the driving power of described RSCT motor comprises power factor correction unit, voltage-regulation unit, modulation boosting unit, demodulation by filter unit, inversion reversing unit, two phase signals generation unit and control units, wherein:
Power factor correction unit is used to receive the outside single-phase alternating current source signal of importing, and described single-phase alternating current source signal is carried out power factor correction, obtains first direct current signal, and described first direct current signal is input to the voltage-regulation unit;
The voltage-regulation unit, be used to receive the frequency setting control signal of control unit output, according to described frequency setting control signal described first direct current signal is carried out pressure regulation, obtain the second required direct current signal of load, export second direct current signal to the modulation boosting unit;
The modulation boosting unit is used to receive the sinusoid pulse width modulation modulation signal that control unit is exported, and is the first high pressure low frequency waveform signal according to described drive pulse signal with described second source conversion of signals;
The demodulation by filter unit is used for the described first high pressure low frequency waveform signal is carried out filtering, obtains the second high pressure low frequency waveform signal;
The inversion reversing unit is used to receive the commutation drive pulse signal that control unit is exported, and according to described drive pulse signal the described second high pressure low frequency waveform signal is carried out inverse transformation to processing, obtains the low frequency sinusoidal signal;
Two phase signals generation units are used for described low frequency sinusoidal signal is carried out phase place output control and treatment, obtain two-phase low frequency sinusoidal signal;
Control unit is used for setting control signal, sinusoid pulse width modulation modulation signal and commutation drive pulse signal according to the load current generated frequency.
2. the driving power of RSCT motor according to claim 1 is characterized in that, described modulation boosting unit comprises:
The sinusoidal signal modular converter is used for according to described sinusoid pulse width modulation modulation signal described second dc power signal being converted to the high frequency sinusoidal signal;
Boost module to the processing of boosting of described high frequency sinusoidal signal, obtains high-frequency signal;
Filtration module carries out filtering to described high-frequency signal, obtains the first high pressure low frequency waveform signal.
3. the driving power of RSCT motor according to claim 2 is characterized in that, described sinusoidal signal modular converter comprises 4 IGBT switching tubes that connect according to the full-bridge mode;
Described boost module is a high frequency transformer;
Described filtration module is a current rectifying and wave filtering circuit.
4. the driving power of RSCT motor according to claim 3, it is characterized in that, described control unit sends the sinusoid pulse width modulation modulation signal to described modulation boosting unit, control the IGBT switching tube alternate conduction in the described modulation boosting unit, obtain described high frequency sinusoidal signal;
Described high frequency transformer boosts to described high frequency sinusoidal signal, obtains described high-frequency signal;
After described current rectifying and wave filtering circuit carries out rectifying and wave-filtering to described high-frequency signal, obtain the described first high pressure low frequency waveform signal with described sinusoid pulse width modulation modulation signal same low frequency frequency.
5. the driving power of RSCT motor according to claim 1, it is characterized in that, the driving power of described RSCT motor comprises two groups of power factor correction units, voltage-regulation unit, modulation boosting unit, demodulation by filter unit and inversion reversing unit, every group of described power factor correction unit, voltage-regulation unit, modulation boosting unit, demodulation by filter unit, inversion reversing unit generate one road low frequency sinusoidal signal respectively, and the phase difference of two low frequency sinusoidal signals is 90 degree.
6. the driving power of RSCT motor according to claim 1, it is characterized in that, control unit is controlled the phase place of every road low frequency sinusoidal signal by adjusting the sinusoid pulse width modulation modulation signal, and the phase difference that makes two-way low frequency sinusoidal signal is 90 degree.
7. the driving power of RSCT motor according to claim 1, it is characterized in that, described control unit sends the commutation drive pulse signal synchronous with the sinusoid pulse width modulation modulation signal to described inversion reversing unit, drive the injectron in the described inversion reversing unit, obtain described low frequency sinusoidal signal after the commutation.
8. the driving power of RSCT motor according to claim 1 is characterized in that, described power factor correction unit is composed in parallel by 4 or 6 circuit of power factor correction.
9. the driving power of RSCT motor according to claim 1 is characterized in that, described inversion reversing unit also is used to gather the current value of load, and exports described control unit to.
10. the driving power of RSCT motor according to claim 9, it is characterized in that, described control unit judges according to the current value that receives whether the electric current changing value in the given time of load surpasses predetermined value, if, then control the processing of boosting of described voltage-regulation unit, perhaps control described modulation boosting unit and carry out down conversion process; Otherwise, determine the balance point magnitude of voltage, two phase signals generation units output has the two-phase low frequency sinusoidal signal of this balance point magnitude of voltage, and wherein, balance point magnitude of voltage correspondence increases or when reducing magnitude of voltage, the electric current of load all raises.
11. the driving power of RSCT motor according to claim 1 is characterized in that, described driving power is arranged on the logger car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110219869.1A CN102291009B (en) | 2011-08-02 | 2011-08-02 | Motor driving power supply for rotary sidewall sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110219869.1A CN102291009B (en) | 2011-08-02 | 2011-08-02 | Motor driving power supply for rotary sidewall sampler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102291009A true CN102291009A (en) | 2011-12-21 |
| CN102291009B CN102291009B (en) | 2014-11-26 |
Family
ID=45337171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110219869.1A Active CN102291009B (en) | 2011-08-02 | 2011-08-02 | Motor driving power supply for rotary sidewall sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102291009B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373120A (en) * | 2014-11-28 | 2015-02-25 | 中国石油天然气集团公司 | Control system and control method of logging drilling sidewall coring tool |
| CN106494230A (en) * | 2015-09-06 | 2017-03-15 | 钟建华 | Car electricity drives portable anti-skidding pendulum corer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62221897A (en) * | 1986-03-24 | 1987-09-29 | Mitsubishi Electric Corp | Motor control apparatus |
| CN101702581A (en) * | 2009-12-09 | 2010-05-05 | 杨戴核 | Home-use 2000w constant voltage and constant frequency regulator |
-
2011
- 2011-08-02 CN CN201110219869.1A patent/CN102291009B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62221897A (en) * | 1986-03-24 | 1987-09-29 | Mitsubishi Electric Corp | Motor control apparatus |
| CN101702581A (en) * | 2009-12-09 | 2010-05-05 | 杨戴核 | Home-use 2000w constant voltage and constant frequency regulator |
Non-Patent Citations (2)
| Title |
|---|
| 邓永红等: "海洋油田测井装置电机驱动供电方式的研究", 《电源技术研究与设计》 * |
| 顾和荣等: "并网逆变器输出电流滞环跟踪控制技术研究", 《中国电机工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373120A (en) * | 2014-11-28 | 2015-02-25 | 中国石油天然气集团公司 | Control system and control method of logging drilling sidewall coring tool |
| CN104373120B (en) * | 2014-11-28 | 2017-01-25 | 中国石油天然气集团公司 | Control system and control method of logging drilling sidewall coring tool |
| CN106494230A (en) * | 2015-09-06 | 2017-03-15 | 钟建华 | Car electricity drives portable anti-skidding pendulum corer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102291009B (en) | 2014-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101454968B (en) | Cycloconverter power control system | |
| CN102291011A (en) | Electromagnetic transmitter and controlling method thereof | |
| CN1806091A (en) | System and method for transmitting electric power into a bore | |
| CN210745048U (en) | 3300V oil gas field fracturing frequency conversion speed control system | |
| CN104079029A (en) | Electric energy feedback type battery charging-discharging and capacity grading device | |
| CN105720855B (en) | Electromagnetic field transmitter and zero-voltage switching soft switch system thereof | |
| CN104656148A (en) | High-power constant-current source emission system and high-power constant-current source emission method | |
| CN1979185A (en) | Novel high-pressure frequency variator low energy-consumption load testing method | |
| CN103312173B (en) | A kind of non-contact electric energy transmission system for vertical drilling system | |
| CN102291009B (en) | Motor driving power supply for rotary sidewall sampler | |
| CN109768717A (en) | A kind of Iarge Power DC Voltage Regulator for intelligent drilling tool | |
| CN103326452B (en) | Workover rig super capacitor energy driving means | |
| CN203942314U (en) | Electric energy feedback type battery charging and discharging and partial volume equipment | |
| CN210225283U (en) | Electric control cabinet of oil field drilling machine | |
| CN204646555U (en) | Wind-power electricity generation drives linear electric motor oil-immersed pump oil production system | |
| CN109802580A (en) | A kind of Iarge Power DC Voltage Regulator for oil drilling tool | |
| CN105262344A (en) | Expandable long-distance power transmission frequency-converter device | |
| CN204559247U (en) | Magnetic coupling dual-mode wireless electric energy transmitting device | |
| CN203800617U (en) | Oil well integrated control device | |
| CN205123596U (en) | Remote power transfer variable frequency device of extensible | |
| CN202218166U (en) | High-power electric exploration constant and steady emission device | |
| CN203456928U (en) | Super-capacitor energy storage driving device for workover rig | |
| CN211720481U (en) | Active rectification control system of network electricity energy storage workover rig | |
| CN106300702A (en) | Non-contact electric energy transmission system and the application in the rotary steering mechanism of down-hole thereof | |
| CN202946113U (en) | Thickened oil exploitation solar energy battery mixed power supply heating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |