CN109831093A - A kind of current generating apparatus for realization power factor compensation in breaker test - Google Patents
A kind of current generating apparatus for realization power factor compensation in breaker test Download PDFInfo
- Publication number
- CN109831093A CN109831093A CN201910072685.3A CN201910072685A CN109831093A CN 109831093 A CN109831093 A CN 109831093A CN 201910072685 A CN201910072685 A CN 201910072685A CN 109831093 A CN109831093 A CN 109831093A
- Authority
- CN
- China
- Prior art keywords
- circuit
- current
- power factor
- control circuit
- full bridge
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Rectifiers (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of for realizing the current generating apparatus of power factor compensation, including rectifier circuit, circuit of power factor correction, full bridge inverter, LCR filter circuit, transformer, two close cycles PI control circuit and PID control circuit in breaker test.Alternating current is switched to direct current by rectifier circuit；Circuit of power factor correction by two close cycles PI control circuit adjust rectifier circuit input current sinusoidal and and voltage in phase, the direct current that output amplitude is stable and voltage ripple is small；PID control circuit acquisition breaker sinusoidal current is fed back to driving signal；The direct current that circuit of power factor correction exports is switched to alternating current by driving signal driving conducting by full bridge inverter, and is handled to obtain required power frequency sinusoidal current by LCR filter circuit and transformer.Implement the present invention, realized under conditions of guaranteeing that output current precision is controllable and rectifier circuit input waveform is controlled, realizes power factor compensation control.
Description
Technical field
The present invention relates to breaker protective property the field of test technology, more particularly to one kind in breaker test for realizing
The current generating apparatus of power factor compensation.
Background technique
Breaker is widely used in system protection, be disjunction control and prevent overload, short circuit, bypass the immediate leadership etc. failures it is most important
Device.When short-circuit conditions occurs in route, instantaneous trip movement (disconnection) occurs for breaker, reliably protects circuitry cuts
Protect the safety of distribution system.When route normal operation, main contact reliably connects circuit, and buckle releaser should not malfunction.It is disconnected
The malfunction and movement resistance of road device makees that great influence can be generated to route and equipment even personal safety.Therefore, in order to guarantee it
The reliability of protection feature, breaker need to carry out before factory stringent protection feature detection and verification.
Protection feature test is carried out to breaker, needs high-precision, transient high-current, and the transient state of current generating apparatus
The parameters such as response time, transient state aperiodic component and wave distortion need precisely controllable.However due to voltage ripple of power network, electricity
The influence of the factors such as the distortion of net higher hamonic wave and test loop impedance dynamic change, generation, the control of high-precision transient high-current
There is larger challenge in system.
In the test of existing breaker, current feedback circuit mostly uses greatly the solution of automatic coupling voltage regulator cooperation step-down transformer
Scheme, the program can obtain the power frequency sinusoidal current of kilo-ampere, but when progress instantaneous protection characteristic test, close a floodgate due to existing
The uncertain problem of phase angle, so that very greatly, the making process of test loop passes through machine to the variation of combined floodgate snap action current value every time
Tool switch realizes that phase angle fluctuation is larger, thus easily causes the presence of snap action electric current aperiodic component, transient response time
It is long, and current distortion and ripple are larger, are easy to cause in breaker test process and malfunction.In addition, using automatic coupling voltage regulator
Strong current generator equipment volume it is big, be easy influenced by factors such as voltage ripple of power network, mains by harmonics, electric current time of origin
Long, detection efficiency is low, and equipment robustness is poor.
It is also common for carrying out detection to breaker protective property using discharge circuit or power-supply device generation high current
One of method, this method are usually to utilize power electronic technique, by power converter, design corresponding breaker detection power supply and make
For breaker protective property test and experiment device, generated instantaneous current value non-overshoot, ripple is small, precision is high, transit time
It is short, and strong interference immunity, it can be ensured that breaker quickly, accurately and reliably detect, but this method is due to needing defeated
Enter side and convert alternating current to more smooth DC voltage, introduces current rectifying and wave filtering circuit.Due to rectifying the presence of link, meeting
Cause input current abnormality serious, containing a large amount of harmonic waves, these harmonic waves blow back into power grid, and power grid is made a large amount of reactive power rings occur
Stream, causes serious harmonic pollution, efficiency substantially reduces, and power factor can drop between 0.5~0.65.
Therefore electric current and power factor combined compensation control method are used in breaker protective property detection process, ensured
Power factor compensation is realized while testing current precision, for promoting breaker detection efficiency, precision and reliability meaning weight
Greatly.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that provide it is a kind of for realized in breaker test power because
The current generating apparatus of number compensation can be realized under conditions of guaranteeing that output current precision is controllable to rectifier circuit incoming wave
Shape is controlled, and achievees the purpose that power factor compensation controls.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides one kind for breaker test in realize power because
The current generating apparatus of number compensation, is set between alternating-current voltage source and breaker comprising rectifier circuit, power factor school
Positive circuit, full bridge inverter, LCR filter circuit, transformer, two close cycles PI control circuit and PID control circuit；Wherein,
The rectifier circuit, circuit of power factor correction, full bridge inverter, LCR filter circuit and transformer are sequentially
Be serially connected, and the rectifier circuit is also connected with the alternating-current voltage source, the transformer also with the breaker phase
Even；The first end and second end of the two close cycles PI control circuit is all connected to the rectifier circuit and the power factor school
Between positive circuit, third end is connected between the circuit of power factor correction and the full bridge inverter, the connection of the 4th end
The circuit of power factor correction；The PID control circuit connects the full bridge inverter, is also attached to the transformer
Between the breaker；
The rectifier circuit is for converting direct current for the power frequency alternating current that the alternating-current voltage source inputs and exporting；
The voltage-phase and amplitude for the direct current that the two close cycles PI control circuit is used to export the rectifier circuit
The current phase and waveform progress electric current PI adjusting of voltage PI adjusting and the direct current to rectifier circuit output are carried out,
The voltage magnitude for the direct current for exporting the rectifier circuit is stable and ripple is small, and makes the friendship of the rectifier circuit input
The electric current of galvanic electricity is sine wave and phase is identical as the power frequency alternating current phase of the alternating-current voltage source, to the entrance power
The current waveform of factor correcting circuit carries out control and harmonic wave is reduced；
The circuit of power factor correction is used to the two close cycles PI control circuit controlling the rectifier circuit and export
Steamed bun wave electric current be corrected, obtain amplitude stability and the small direct current of voltage ripple；
The PID control circuit is sampled and is adjusted as expectation electric current for the sinusoidal current current to the breaker
Driving signal as full bridge inverter conducting afterwards；
After the full bridge inverter is used for the driving signal driving conducting by the PID control circuit, by the function
The DC conversion of rate factor correcting circuit output is alternating current and exports；
The LCR filter circuit obtains institute for the alternating current that the full bridge inverter exports to be filtered
Industrial-frequency alternating current needed for stating transformer；
The transformer, which is used to export obtained industrial frequency AC electric isolution, detects institute for the breaker protective property
The power frequency sinusoidal current needed.
Wherein, the circuit of power factor correction includes inductance L1 and booster circuit, diode that capacitor C1 parallel connection is formed
VD and metal-oxide-semiconductor VT；Wherein,
The of one end of the inductance L1 and the positive output end of the rectifier circuit and the two close cycles PI control circuit
Two ends are connected, and the other end is connected with the drain electrode of the positive and described metal-oxide-semiconductor VT of the diode VD；The one of the capacitor C1
Cathode, the positive input terminal of the full bridge inverter and the third of the two close cycles PI control circuit at end and the diode VD
End is connected, the other end and the source electrode of the metal-oxide-semiconductor VT, the first end of the two close cycles PI control circuit, rectifier bridge electricity
The negative input end of the negative output terminal on road and the full bridge inverter is connected；The grid and the two close cycles of the metal-oxide-semiconductor VT
4th end of PI control circuit is connected；
The two close cycles PI control circuit include voltage error amplifier M1, multiplier M2, current error amplifier M3 and
Comparator M4；Wherein,
Diode VD's described in an input terminal and the circuit of power factor correction of the voltage error amplifier M1
Cathode is connected with the positive input terminal of one end of the capacitor C1 and the full bridge inverter, another input terminal and a benchmark
Voltage source is connected, and output end is connected with an input terminal of the multiplier M2；Another input terminal of the multiplier M2 with it is described
The positive output end of one end of inductance L1 described in circuit of power factor correction and the rectifier circuit be connected, output end with
An input terminal of the current error amplifier M3 is connected；Another input terminal and the MOS of the current error amplifier M3
The source electrode of pipe VT, one end of the capacitor C1, the negative output terminal of the rectifier circuit and the full bridge inverter bear it is defeated
Enter end to be connected, output end is connected with an input terminal of the comparator M4；Another input terminal of the comparator M4 and a saw
Tooth wave signal source is connected, and output end is connected with the grid of metal-oxide-semiconductor VT described in the circuit of power factor correction.
Wherein, the alternating-current voltage source is 220V, and phase is 0 °；The circuit of power factor correction output voltage is
The inductance of 311V, inductance L1 are 0.7mH, and the capacitance of capacitor C1 is 4.5mF.
Wherein, double bridge arm circuits that the full bridge inverter is formed by four metal-oxide-semiconductor VT1~VT4.
The implementation of the embodiments of the present invention has the following beneficial effects:
On the one hand the present invention makes rectifier bridge by introducing the circuit of power factor correction controlled by two close cycles PI control circuit
The DC voltage ripple of circuit output is smaller, and amplitude is more stable, the alternating current electricity on the other hand inputting rectifier circuit
Flow sineization and with input voltage same-phase, harmonic wave is reduced with this, increase power factor, so as in guarantee output electric current
It is realized under conditions of precision is controllable and rectifier circuit input waveform is controlled, achieve the purpose that power factor compensation controls.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without any creative labor, according to
These attached drawings obtain other attached drawings and still fall within scope of the invention.
Fig. 1 is that a kind of electric current for realization power factor compensation in breaker test that the embodiment of the present invention proposes occurs
The system construction drawing of device；
Fig. 2 is that a kind of electric current for realization power factor compensation in breaker test that the embodiment of the present invention proposes occurs
The structure connection figure of circuit of power factor correction and two close cycles PI control circuit in device；
Fig. 3 is the working principle diagram of two close cycles PI control circuit in Fig. 2；
Fig. 4 is the circuit topology figure of circuit of power factor correction in Fig. 2；
Fig. 5 is the working principle diagram of PID control circuit in Fig. 1；
Fig. 6 is that a kind of electric current for realization power factor compensation in breaker test that the embodiment of the present invention proposes occurs
The application scenario diagram of device；
Fig. 7 is the existing peak current for being not introduced into rectifier circuit in the current generating apparatus of circuit of power factor correction
Waveform diagram；
Fig. 8 is the existing peak current for being not introduced into rectifier circuit in the current generating apparatus of circuit of power factor correction
Entrained harmonic wave forms figure；
Fig. 9 is that a kind of electric current for realization power factor compensation in breaker test that the embodiment of the present invention proposes occurs
The comparison diagram of the electric current of rectifier circuit and alternating-current voltage source same-phase waveform in device；
Figure 10 is a kind of electric current hair for realization power factor compensation in breaker test that the embodiment of the present invention proposes
Waveform diagram after harmonic wave entrained by the peak current of rectifier circuit is corrected by circuit of power factor correction in generating apparatus.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.
As shown in Figure 1, one kind of proposition is for realizing power factor compensation in breaker test in the embodiment of the present invention
Current generating apparatus, be set between alternating-current voltage source AC and breaker T comprising rectifier circuit 1, PFC
Circuit 2, full bridge inverter 3, LCR filter circuit 4, transformer 5, two close cycles PI control circuit 6 and PID control circuit 7；Its
In,
Rectifier circuit 1, circuit of power factor correction 2, full bridge inverter 3, LCR filter circuit 4 and transformer 5 are sequentially
It is serially connected, and rectifier circuit 1 is also connected with alternating-current voltage source AC, transformer 5 also connects with breaker T-phase；Two close cycles PI
The first end a1 and second end a2 of control circuit 6 are all connected between rectifier circuit 1 and circuit of power factor correction 2, third
End a3 is connected between circuit of power factor correction 2 and full bridge inverter 3, the 4th end a4 connection circuit of power factor correction
2；PID control circuit 7 connects full bridge inverter 3, is also attached between transformer 5 and breaker T；
Rectifier circuit 1 is for converting direct current for the power frequency alternating current of alternating-current voltage source AC input and exporting；
The voltage-phase and amplitude for the direct current that two close cycles PI control circuit 6 is used to export rectifier circuit 1 carry out electricity
The current phase and waveform progress electric current PI adjusting for pressing PI adjusting and the direct current exported to rectifier circuit 1, make rectifier bridge
The voltage magnitude for the direct current that circuit 1 exports is stable and ripple is small, and the electric current for the alternating current for inputting rectifier circuit 1 is positive
String wave and phase is identical as the power frequency alternating current phase of alternating-current voltage source AC, to the electric current to ingoing power factor correcting circuit 2
Waveform carries out control and harmonic wave is reduced；
Circuit of power factor correction 2 is used to control the steamed bun wave that rectifier circuit 1 exports according to two close cycles PI control circuit 6
Electric current is corrected, and obtains amplitude stability and the small direct current of voltage ripple；
PID control circuit 7 is sampled and is adjusted as conduct after expectation electric current for the sinusoidal current current to breaker T
The driving signal that full bridge inverter 3 is connected；
After full bridge inverter 3 is used for the driving signal driving conducting by PID control circuit 7, by PFC
The DC conversion that circuit 2 exports is alternating current and exports；
LCR filter circuit 4 obtains 5 institute of transformer for the alternating current that full bridge inverter 3 exports to be filtered
The industrial-frequency alternating current needed；
Transformer 5 is used to for obtained industrial frequency AC being electrically isolated and export as power frequency needed for breaker protective property detection
Sinusoidal current.
It should be noted that the first end a1 and second end a2 of two close cycles PI control circuit 6 are all connected to rectifier circuit 1
Between circuit of power factor correction 2, mainly respectively in order to acquire rectifier circuit 1 output direct current voltage and current
And carry out PI adjusting.
It is understood that when carrying out circuit power supply after the external alternating-current voltage source AC of rectifier circuit 1, rectifier circuit 1
Direct current is converted by the power frequency alternating current of input by uncontrollable rectifier bridge, by circuit of power factor correction 2, on the one hand makes to rectify
The DC conversion that bridge circuit 1 is exported by rectifier bridge is that ripple is smaller, the more stable direct current of amplitude, on the other hand make by
The current sinusoidal for the alternating current that rectifier circuit 1 inputs, and with alternating-current voltage source ac input voltage same-phase, reduced with this
Harmonic wave, increase power factor；The DC conversion alternating current that full bridge inverter 3 exports circuit of power factor correction 2, most
Afterwards by LCR filter circuit 4, in the industrial-frequency alternating current that the primary side of transformer 5 is needed.It is isolated by transformer 5 and is exported
The power frequency sine high current detected for breaker protective property can be obtained in the secondary side of transformer 5.
In embodiments of the present invention, circuit of power factor correction 2 reduces the harmonic wave of electric current and the raising of power factor is adopted
It is controlled, i.e., is realized by two close cycles PI control circuit 6 with two close cycles PI.At this point, circuit of power factor correction 2 is defeated using boosting
Formula circuit structure out, the boosting output type are used for simple current-mode control, have PF value height, total harmonic distortion factor small, high-efficient
The advantages of, suitable for the PFC application of 75~2000W power bracket, it is most widely used.The power factor
The control mode of correcting circuit 2 has average current type current, lagging current type, peak value according to the working principle classification of control input current
Current mode and voltage-controlled type are fixed, the characteristic of continuous input current according to design circuit work frequency, the average electricity of final choice
The control of flow pattern.
In one example, as shown in Fig. 2, circuit of power factor correction 2 includes that inductance L1 and capacitor C1 parallel connection are formed
Booster circuit, diode VD and metal-oxide-semiconductor VT；Wherein,
One end of inductance L1 and the positive output end of rectifier circuit 1 and the second end a2 of two close cycles PI control circuit 6 are homogeneous
Even, the other end is connected with the drain D of the anode of diode VD and metal-oxide-semiconductor VT；The cathode of one end of capacitor C1 and diode VD,
The positive input terminal of full bridge inverter 3 and the third end a3 of two close cycles PI control circuit 6 are connected, and the other end is with metal-oxide-semiconductor VT's
Source S, the first end a1 of two close cycles PI control circuit 6, the negative output terminal of rectifier circuit 1 and full bridge inverter 3 bear it is defeated
Enter end to be connected；The grid G of metal-oxide-semiconductor VT is connected with the 4th end a4 of two close cycles PI control circuit 6；
Two close cycles PI control circuit 6 includes voltage error amplifier M1, multiplier M2, current error amplifier M3 and compares
Device M4；Wherein,
The cathode and capacitor C1 of diode VD in an input terminal and circuit of power factor correction 2 of voltage error amplifier M1
One end and full bridge inverter 3 be connected, another input terminal and a reference voltage source U0(such as 5V) be connected, output end with
An input terminal of multiplier M2 is connected；One end of inductance L1 in another input terminal and circuit of power factor correction 2 of multiplier M2
And the positive output end of rectifier circuit 1 is connected, output end is connected with an input terminal of current error amplifier M3；Electric current misses
Another input terminal of poor amplifier M3 and the source S of metal-oxide-semiconductor VT, one end of capacitor C1, the negative output terminal of rectifier circuit 1 and complete
The negative input end of bridge inverter circuit 3 is connected, and output end is connected with an input terminal of comparator M4；Comparator M4's is another defeated
Enter end and a sawtooth signal source I0(such as 50mA, 100KHz) is connected, metal-oxide-semiconductor VT in output end and circuit of power factor correction 2
Grid G be connected.
As shown in figure 3, realizing that the control working principle of average current type current is illustrated to two close cycles PI control circuit 6.Tool
Body is to be acquired to circuit output voltage and feed back U as output voltageo, with given reference voltage U*It is compared, misses
Difference is adjusted by PI controller, the output voltage U of output valve and rectifier circuitinIt is multiplied by multiplier.Multiply
The output of musical instruments used in a Buddhist or Taoist mass and input voltage are of similar shape and phase, and the reference value as rectification bridge DC side electric current, to whole
It flows bridge circuit and exports electric current IinIt is acquired and is compared with current reference value, after error amount is adjusted by PI controller
It is compared with sawtooth signal to output pwm signal, by changing the output pulse duty factor of PWM modulator, by driving
The on-off of i.e. controllable power semiconductor switch after dynamic circuit, thus reach output voltage stabilization and input current sine and with
The purpose of input voltage same-phase realizes PFC.
It is specific as follows meanwhile as shown in figure 4, propose corresponding design requirement to circuit of power factor correction 2:
(1) circuit of power factor correction can determine according to current generating apparatus input and output voltage and power:
A, input voltage (220 ± 10%) V, output voltage (311 ± 10%) V；Power is 1500W；Input power frequency
50HZ, working frequency 100kHZ.
(2) size of inductance L1 will determine the size of ripple current, so it is related with the peak value of current and power supply of input.
In the case where inputting equal with output power, peak point current maximum value are as follows:
Ripple current is generally the 20% of peak point current, then
Δ I=0.2 × IL(pk)
The maximum duty cycle of counting circuit:
The then value of boost inductance are as follows:
(3) capacitor C1, which designs major consideration, has rated power, voltage ripple requirement and output to require to hold time
Deng.The length held time needed for system depends on the circumstances, the holding time of general output voltage be chosen at 15ms to 50ms it
Between, it is obtained according to the conservation of energy:
Wherein Δ t is to hold time, and α is that output voltage output maintains coefficient.Then as available from the above equation:
In embodiments of the present invention, double bridge arm circuits that full bridge inverter 3 is formed by four metal-oxide-semiconductor VT1~VT4, and
Full bridge inverter 3 exports electric current and uses PID control, i.e., is realized by PID control circuit 7,
As shown in figure 5, realizing that the control working principle of electric energy conversion is illustrated to PID control circuit 7.Specifically, right
The current sinusoidal current of breaker is sampled, and with given sinusoidal reference current I*It is compared, the error of the two utilizes
PID controller is adjusted, and pid control signal is obtained.Pid control signal is compared with sawtooth signal, is obtained for controlling
The SPWM signal that full bridge inverter 3 processed is connected by four metal-oxide-semiconductor VT1~VT4, this signal is by driving circuit, so that full-bridge
Two pairs of bridge arm alternate conductions of inverter circuit 3, realize the conversion of electric energy.
In Fig. 5, n (t) is the expectation electric current reference value of setting, and y (t) is the current output value of breaker test macro, e
(t) be input controller deviation signal, i.e. electric current reality output and current reference be worth difference, and u (t) is the output of controller
Control amount, the control formula of PID are as follows:
Wherein, Kp, Ti, Td are respectively proportionality coefficient, integration time constant and derivative time constant.
As shown in fig. 6, being one of embodiment of the present invention for realizing the electricity of power factor compensation in breaker test
The application scenario diagram of flow generating apparatus.At this point, alternating-current voltage source AC is 220V, phase is 0 °；Obtain PFC electricity
2 output voltage of road is 311V, and the inductance of inductance L1 is 0.7mH, and the capacitance of capacitor C1 is 4.5mF.
In embodiments of the present invention, as shown in Figure 7 to 10, one of embodiment of the present invention is used for breaker test
The middle current generating apparatus and the existing current generating apparatus for being not introduced into circuit of power factor correction for realizing power factor compensation
It compares.
In Fig. 7, the input peak current of rectifier circuit when to be not introduced into circuit of power factor correction, to current waveform into
Line frequency spectrum analysis, current harmonic content is as shown in figure 8, its harmonic content is larger as can see from Figure 8.
It is AC supply voltage V when introducing circuit of power factor correction in the embodiment of the present invention in Fig. 9acWith rectifier bridge electricity
Road input current IacWaveform, it is seen that after system runs 0.1s, input current waveform already close to for sine wave, and with input
The waveform of voltage is identical.Spectrum analysis is carried out to current waveform at this time, Harmonics of Input is as shown in Figure 10 containing spirogram, with figure
8 compared to improving significantly, and current first harmonics component is maximum, measures THD=5.04%, according to
Obtain PF=0.99, it is seen then that analogue system power factor with higher.
The implementation of the embodiments of the present invention has the following beneficial effects:
On the one hand the present invention makes rectifier bridge by introducing the circuit of power factor correction controlled by two close cycles PI control circuit
The DC voltage ripple of circuit output is smaller, and amplitude is more stable, the alternating current electricity on the other hand inputting rectifier circuit
Flow sineization and with input voltage same-phase, harmonic wave is reduced with this, increase power factor, so as in guarantee output electric current
It is realized under conditions of precision is controllable and rectifier circuit input waveform is controlled, achieve the purpose that power factor compensation controls.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.
Claims (4)
1. a kind of for realizing the current generating apparatus of power factor compensation in breaker test, which is characterized in that be set to friendship
Between galvanic electricity potential source and breaker comprising rectifier circuit, circuit of power factor correction, full bridge inverter, LCR filtered electrical
Road, transformer, two close cycles PI control circuit and PID control circuit；Wherein,
The rectifier circuit, circuit of power factor correction, full bridge inverter, LCR filter circuit and transformer sequentially concatenate
Together, and the rectifier circuit is also connected with the alternating-current voltage source, and the transformer is also connected with the breaker；Institute
The first end and second end for stating two close cycles PI control circuit is all connected to the rectifier circuit and PFC electricity
Between road, third end is connected between the circuit of power factor correction and the full bridge inverter, described in the connection of the 4th end
Circuit of power factor correction；Full bridge inverter described in the PID control circuit connection is also attached to the transformer and described
Between breaker；
The rectifier circuit is for converting direct current for the power frequency alternating current that the alternating-current voltage source inputs and exporting；
The voltage-phase and amplitude for the direct current that the two close cycles PI control circuit is used to export the rectifier circuit carry out
The current phase and waveform progress electric current PI adjusting of voltage PI adjusting and the direct current to rectifier circuit output, make institute
The voltage magnitude for stating the direct current of rectifier circuit output is stable and ripple is small, and makes the alternating current of the rectifier circuit input
Electric current be sine wave and phase it is identical with the power frequency alternating current phase of the alternating-current voltage source, to entrance the power factor
The current waveform of correcting circuit carries out control and harmonic wave is reduced；
The circuit of power factor correction is used to control the two close cycles PI control circuit steamed bun of the rectifier circuit output
Bow wave electric current is corrected, and obtains amplitude stability and the small direct current of voltage ripple；
The PID control circuit is sampled and is adjusted to make after expectation electric current for the sinusoidal current current to the breaker
For the driving signal of full bridge inverter conducting；
After the full bridge inverter is used to be connected by the driving of the driving signal of the PID control circuit, by the power because
The DC conversion of number correcting circuit output is alternating current and exports；
The LCR filter circuit obtains the change for the alternating current that the full bridge inverter exports to be filtered
Industrial-frequency alternating current needed for depressor；
The transformer is used to for obtained industrial frequency AC being electrically isolated and export as needed for breaker protective property detection
Power frequency sinusoidal current.
2. as described in claim 1 for realizing the current generating apparatus of power factor compensation, feature in breaker test
It is, the circuit of power factor correction includes inductance L1 and booster circuit, diode VD and metal-oxide-semiconductor that capacitor C1 parallel connection is formed
VT；Wherein,
The second end of one end of the inductance L1 and the positive output end of the rectifier circuit and the two close cycles PI control circuit
It is connected, the other end is connected with the drain electrode of the positive and described metal-oxide-semiconductor VT of the diode VD；One end of the capacitor C1 with
The third end of the cathode of the diode VD, the positive input terminal of the full bridge inverter and the two close cycles PI control circuit is equal
It is connected, the other end and the source electrode of the metal-oxide-semiconductor VT, the first end of the two close cycles PI control circuit, the rectifier circuit
The negative input end of negative output terminal and the full bridge inverter is connected；The grid of the metal-oxide-semiconductor VT and the two close cycles PI are controlled
4th end of circuit processed is connected；
The two close cycles PI control circuit includes voltage error amplifier M1, multiplier M2, current error amplifier M3 and compares
Device M4；Wherein,
The cathode of diode VD described in an input terminal and the circuit of power factor correction of the voltage error amplifier M1
It is connected with the positive input terminal of one end of the capacitor C1 and the full bridge inverter, another input terminal and a reference voltage
Source is connected, and output end is connected with an input terminal of the multiplier M2；Another input terminal and the power of the multiplier M2
The positive output end of one end of inductance L1 described in factor correcting circuit and the rectifier circuit be connected, output end with it is described
An input terminal of current error amplifier M3 is connected；Another input terminal of the current error amplifier M3 and the metal-oxide-semiconductor VT
Source electrode, one end of the capacitor C1, the negative output terminal of the rectifier circuit and the full bridge inverter negative input end
It is connected, output end is connected with an input terminal of the comparator M4；Another input terminal and a sawtooth wave of the comparator M4
Signal source is connected, and output end is connected with the grid of metal-oxide-semiconductor VT described in the circuit of power factor correction.
3. as claimed in claim 2 for realizing the current generating apparatus of power factor compensation, feature in breaker test
It is, the alternating-current voltage source is 220V, and phase is 0 °；The circuit of power factor correction output voltage is 311V, inductance L1
Inductance be 0.7mH, the capacitance of capacitor C1 is 4.5mF.
4. as described in claim 1 for realizing the current generating apparatus of power factor compensation, feature in breaker test
It is, double bridge arm circuits that the full bridge inverter is formed by four metal-oxide-semiconductor VT1~VT4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072685.3A CN109831093B (en) | 2019-01-25 | 2019-01-25 | Current generating device for realizing power factor compensation in circuit breaker test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072685.3A CN109831093B (en) | 2019-01-25 | 2019-01-25 | Current generating device for realizing power factor compensation in circuit breaker test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109831093A true CN109831093A (en) | 2019-05-31 |
| CN109831093B CN109831093B (en) | 2021-07-06 |
Family
ID=66862552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910072685.3A Active CN109831093B (en) | 2019-01-25 | 2019-01-25 | Current generating device for realizing power factor compensation in circuit breaker test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109831093B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333468A (en) * | 2019-07-12 | 2019-10-15 | 核工业理化工程研究院 | Bearing calibration is tested in inversion applied to rectifier |
| CN111239598A (en) * | 2020-01-16 | 2020-06-05 | 温州大学乐清工业研究院 | Device for carrying out online test on protection characteristic of circuit breaker |
| CN112202355A (en) * | 2020-09-09 | 2021-01-08 | 惠州志顺电子实业有限公司 | Inverter control method, control device, inverter device, and storage medium |
| CN114123759A (en) * | 2021-11-30 | 2022-03-01 | 上海南芯半导体科技股份有限公司 | Alternating current-direct current converter and control method thereof |
| CN115728530A (en) * | 2022-11-14 | 2023-03-03 | 浙江涵普电力科技有限公司 | Wide-load adaptive AC testing voltage source device |
| TWI810415B (en) * | 2019-11-25 | 2023-08-01 | 鴻海精密工業股份有限公司 | Open-circuit detection device |
| CN117554857A (en) * | 2023-12-22 | 2024-02-13 | 湖南恩智测控技术有限公司 | Method and device for detecting instantaneous disconnection of wire harness or connector and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217037U (en) * | 2011-09-14 | 2012-05-09 | 艾普斯电源（苏州）有限公司 | Test device of circuit breaker |
| CN103269156A (en) * | 2013-05-11 | 2013-08-28 | 广西大学 | Power-factor correction device based on SOPC |
| US20160141964A1 (en) * | 2014-11-17 | 2016-05-19 | Infineon Technologies Austria Ag | System and Method for a Switched-Mode Power Supply |
| CN107272792A (en) * | 2017-07-05 | 2017-10-20 | 温州大学 | A kind of constant-current source device tested for breaker |
-
2019
- 2019-01-25 CN CN201910072685.3A patent/CN109831093B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217037U (en) * | 2011-09-14 | 2012-05-09 | 艾普斯电源（苏州）有限公司 | Test device of circuit breaker |
| CN103269156A (en) * | 2013-05-11 | 2013-08-28 | 广西大学 | Power-factor correction device based on SOPC |
| US20160141964A1 (en) * | 2014-11-17 | 2016-05-19 | Infineon Technologies Austria Ag | System and Method for a Switched-Mode Power Supply |
| CN107272792A (en) * | 2017-07-05 | 2017-10-20 | 温州大学 | A kind of constant-current source device tested for breaker |
Non-Patent Citations (1)
| Title |
|---|
| 赵琛等: "基于SPWM调制的交流恒流源系统设计", 《电子设计工程》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333468A (en) * | 2019-07-12 | 2019-10-15 | 核工业理化工程研究院 | Bearing calibration is tested in inversion applied to rectifier |
| CN110333468B (en) * | 2019-07-12 | 2021-07-02 | 核工业理化工程研究院 | Inversion test correction method applied to rectifier |
| TWI810415B (en) * | 2019-11-25 | 2023-08-01 | 鴻海精密工業股份有限公司 | Open-circuit detection device |
| CN111239598A (en) * | 2020-01-16 | 2020-06-05 | 温州大学乐清工业研究院 | Device for carrying out online test on protection characteristic of circuit breaker |
| CN112202355A (en) * | 2020-09-09 | 2021-01-08 | 惠州志顺电子实业有限公司 | Inverter control method, control device, inverter device, and storage medium |
| CN112202355B (en) * | 2020-09-09 | 2024-03-15 | 惠州志顺电子实业有限公司 | Inverter control method, control device, inverter device, and storage medium |
| CN114123759A (en) * | 2021-11-30 | 2022-03-01 | 上海南芯半导体科技股份有限公司 | Alternating current-direct current converter and control method thereof |
| CN114123759B (en) * | 2021-11-30 | 2024-01-26 | 上海南芯半导体科技股份有限公司 | AC-DC converter and control method thereof |
| CN115728530A (en) * | 2022-11-14 | 2023-03-03 | 浙江涵普电力科技有限公司 | Wide-load adaptive AC testing voltage source device |
| CN115728530B (en) * | 2022-11-14 | 2024-06-04 | 浙江涵普电力科技有限公司 | Wide load adaptability alternating current test voltage source device |
| CN117554857A (en) * | 2023-12-22 | 2024-02-13 | 湖南恩智测控技术有限公司 | Method and device for detecting instantaneous disconnection of wire harness or connector and storage medium |
| CN117554857B (en) * | 2023-12-22 | 2024-06-04 | 湖南恩智测控技术有限公司 | Method and device for detecting instantaneous disconnection of wire harness or connector and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109831093B (en) | 2021-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109831093A (en) | A kind of current generating apparatus for realization power factor compensation in breaker test | |
| CN107966626B (en) | Power module test system of power electronic transformer | |
| CN106452048B (en) | Voltage adaptive Switching Power Supply | |
| CN107733245B (en) | A kind of efficient amplitude modulation perseverance high-frequency electric dust removal power circuit | |
| CN104375039B (en) | Testing system for isolation type direct-current transformer | |
| CN103368372A (en) | Power factor correction circuit | |
| CN110365218A (en) | A kind of PWM switching power source control circuit and method with automatic adjusument | |
| CN104269914A (en) | Wind-solar complementary control and inversion integrated machine | |
| CN101521393A (en) | On-line uninterrupted power supply device | |
| CN202602533U (en) | Power factor correction circuit, and integrated circuit and switch power supply for the manufacture of the power factor correction circuit | |
| CN107332438B (en) | Power factor correction method based on double-inductor double-voltage direct current output circuit | |
| CN206135430U (en) | Miniature photovoltaic grid -connected inverter | |
| CN201199672Y (en) | Flyback converting device with single-stage power factor calibrating circuit | |
| CN105119317A (en) | Method utilizing PV power generation device for compensation | |
| Gangavarapu et al. | Analysis and design of three phase single stage isolated Cuk based PFC converter | |
| Saini et al. | Power factor correction using bridgeless boost topology | |
| CN100517927C (en) | Three-phase power supply parallel feedforward compensation power factor correction circuit | |
| CN111398685B (en) | Impedance measurement type island detection method suitable for annular flexible direct current power distribution network | |
| Amiri et al. | Real-time hardware-in-the-loop simulation and control of totem pole PFC converter | |
| CN211046755U (en) | PFC circuit with input power limiting function | |
| CN105245107B (en) | A kind of current mode AC power converter | |
| CN110336458B (en) | Harmonic suppression circuit, power supply with same and air conditioner | |
| CN209446692U (en) | A kind of detection circuit and DC Electronic Loads for grid-connecting apparatus | |
| Huynh et al. | Performance analysis of a single-stage high-frequency AC-AC buck converter for a series-series compensated inductive power transfer system | |
| CN106411160A (en) | Switching power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190531 Assignee: Shanghai Red Sandalwood Intelligent Technology Co.,Ltd. Assignor: Wenzhou University Contract record no.: X2022330000630 Denomination of invention: A Current Generator for Power Factor Compensation in Circuit Breaker Testing Granted publication date: 20210706 License type: Common License Record date: 20221025 |