CN104779044B - Saturable reactor with harmonic rectification access - Google Patents
Saturable reactor with harmonic rectification access Download PDFInfo
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- CN104779044B CN104779044B CN201510224726.8A CN201510224726A CN104779044B CN 104779044 B CN104779044 B CN 104779044B CN 201510224726 A CN201510224726 A CN 201510224726A CN 104779044 B CN104779044 B CN 104779044B
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Abstract
The invention relates to a saturable reactor with a harmonic rectification access. The saturable reactor comprises a closed-loop core, wherein one core column is provided with a coil L1 and a coil L3; the other core column is provided with a coil L2 and a coil L4; the homonymous end of the coil L1 and the homonymous end of the coil L2 are connected with a terminal I; the heteronymous end of the coil L1 and the heteronymous end of the coil L2 are connected with a terminal II through a forward thyristor D1 and a reverse thyristor D2; the two ends of the thyristor D1 are connected with a resistor R1 in parallel, and the two ends of the thyristor D2 are connected with a resistor R2 in parallel; a control terminal of the thyristor D1 and a control terminal of the thyristor D2 are connected with a control circuit; the control circuit controls the size of the firing angle of the thyristor D1 and the size of the firing angle of the thyristor D2, and the rectification quantity of the thyristor D1 and the thyristor D2 is adjusted continuously; the homonymous end of the coil L3 and the homonymous end of the coil L4 are connected together, and the heteronymous end of the coil L3 and the heteronymous end of the coil L4 are connected with a diode D3.
Description
Technical field
The present invention relates to power transformation technology field is sent in power system, particularly to a kind of saturation reactance having harmonic wave rectification path
Device.
Background technology
Application in power system for the reactor is widely.Current-limiting reactor can limiting short-circuit current；Shunt reactor
Can over-voltage；Reactor is combined with electric capacity and be may make up filter circuit.In some applications, the reactance value of reactor is solid
Fixed constant；In some applications, the reactance value of reactor should with the change of power system operation mode constantly regulate.
The controllable transducer (also referred to as: saturable reactor, magnet controlled reactor) that reactance value can continuously adjust is important research class
Topic.
Saturable reactor is the reactance value changing reactor using the saturated characteristic of saturable reactor closed loop iron core.?
Many saturable reactors are had to be suggested, Chinese Water Conservancy water power publishing house publishes Cai Xuansan in 2008, high more agriculture writes " controlled saturation
Reactor principle, design with application " book saturable reactor has been made summarize.Cn201510103299.8 proposes a kind of structure letter
Single saturable reactor.How to shorten the transient response time of existing saturable reactor further, how to reduce existing further
The harmonic content of saturable reactor is important research topic and research direction.
Content of the invention
The purpose of the present invention is exactly to be to solve the above problems, and provides that a kind of transient response time is shorter, harmonic content is less,
There is the saturable reactor of harmonic wave rectification path.
For achieving the above object, the present invention is in the following way:
A kind of saturable reactor having harmonic wave rectification path, it is single-phase, including single-phase structure simple saturation electricity
Anti- device, the simple saturable reactor of single-phase structure has saturable reactor closed loop iron core, each in saturable reactor closed loop iron core
At least one harmonic wave rectification path unit is set up on the iron core column with coil, each harmonic wave rectification path unit is by a pair of line
Circle and diode coil being connected with this are constituted, and this is arranged on the different iron core column of saturable reactor closed loop iron core to coil
On.
Described harmonic wave rectification path unit includes coil l3, coil l4, and both are located in different iron core column, coil l3,
The Same Name of Ends of coil l4 connects, and connects diode d3 between different name end, one end of diode d3 then with have the full of harmonic wave rectification path
Connect with the terminal ii of reactor.
Described harmonic wave rectification path unit includes coil l3, coil l4, and both are located in different iron core column；Coil l3,
The Same Name of Ends of coil l4 is connected with the terminal i of the saturable reactor having harmonic wave rectification path after connecting, between different name end and diode
D3 connects；Meanwhile, coil l3, the different name end of coil l4 are also connected with the Same Name of Ends of primary coil in respective iron core column respectively.
Described harmonic wave rectification path unit includes coil l3, coil l4, and both are located in different iron core column；Coil l3,
The Same Name of Ends of coil l4 is connected with the terminal i of the saturable reactor having harmonic wave rectification path after connecting, between different name end and diode
D3 connects；Meanwhile, different name end is connected with the Same Name of Ends of primary coil in another iron core column.
Set up a harmonic wave path unit again, in two different iron core column, increase coil l7 and coil l8 respectively；Coil
L7, the Same Name of Ends of coil l8 link together, and coil l7, the different name end of coil l8 connect diode d4；One end of diode d4
It is connected with terminal ii.
Described coil l7, coil l8 equal turn numbers.
Described coil l3, coil l4 equal turn numbers.
Described coil l3 is equal with the amplitude of the higher harmonic voltage producing respectively on coil l4, but phase place is unequal,
Diode d3 has harmonic wave rectification electric current to flow through, and constitutes harmonic wave rectification path.
The amplitude of the higher harmonic voltage producing respectively on described coil l7, coil l8 is equal, but phase place is unequal, and two
Pole pipe d4 has harmonic wave rectification electric current to flow through, and constitutes harmonic wave rectification path.
A kind of saturable reactor having harmonic wave rectification path, it is using the described single-phase saturation electricity having harmonic wave rectification path
The three-phase of anti-device has the saturable reactor of harmonic wave rectification path.
The invention has the beneficial effects as follows: increase, in saturable reactor circuit, the harmonic wave rectification path that diode is constituted, can
Shorten saturable reactor transient response time, reduce saturable reactor harmonic content.Measure is simple, reliable.
Brief description
Fig. 1 represents existing saturable reactor basic structure.
Fig. 2 represents that the first has the saturable reactor of harmonic wave rectification path.
Fig. 3 represents that second has the saturable reactor of harmonic wave rectification path.
Fig. 4 represents that the third has the saturable reactor of harmonic wave rectification path.
Wherein, 1. saturable reactor terminal i, 2. saturable reactor terminal ii, 3. saturable reactor iron core, 4. control electricity
Road.
Specific embodiment
Embodiment 1:
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
Cn201510103299.8 proposes a kind of simple saturable reactor of structure, as shown in Figure 1.Enter one on this basis
Step shortens the transient response time of this saturable reactor, and the harmonic content reducing this saturable reactor further is the present invention
Purpose.
The first has the structure of the saturable reactor of harmonic wave rectification path and connected mode as shown in Figure 2.Including saturation electricity
Anti- device terminal i1, saturable reactor terminal ii2, saturable reactor closed loop iron core 3, control circuit 4.Saturable reactor closed loop iron core
3 at least two sectional areas are equal, iron core column that is all having coil；This two iron core column each at least can be formed one without
The magnetic flux closed loop of other side's iron core column.
Saturable reactor closed loop iron core 3 can be mutually not have aisled two closed loop iron cores, such as 1: two square shape
Iron core.Can also be one, mutually aisled closed loop iron core；Such as 2: three iron core column, there is yoke at iron core column two ends even
Logical three iron core column, any two iron core column can mutually constitute magnetic flux closed loop, but each self-forming of at least two energy without
Cross the closed loop of other side's iron core column.Such as 3: four iron core column, iron core column two ends have yoke to connect four iron core column, any two ferrum
Stem stem can mutually constitute magnetic flux closed loop, but each self-forming of at least two energy is without the closed loop of other side's iron core column, such as Fig. 2
Shown.
The equal iron core column of 3 two sectional areas of saturable reactor closed loop iron core, wherein one iron core column has coil l1；Separately
There is coil l2 in a piece iron core column；Coil l1, the equal turn numbers of coil l2.Coil l1, the Same Name of Ends of coil l2 connect saturation electricity
Anti- device terminal i1, coil l1, the different name end of coil l2 connect saturable reactor through positive IGCT d1, reverse IGCT d2 respectively
Terminal ii2；Parallel resistance r1, resistance r2 are also distinguished in IGCT d1, the two ends of IGCT d2；Resistance r1, the resistance phase of resistance r2
Deng；IGCT d1, the control terminal of IGCT d2 connect control circuit 4 respectively.
Control circuit 4 controls the size of IGCT d1 and IGCT d2 Trigger Angle, realizes continuously adjusting IGCT d1 and crystalline substance
The size of brake tube d2 rectification flow.
Said structure is identical with cn201510103299.8 with connected mode.Figure it is seen that the first has harmonic wave whole
The saturable reactor of logical circulation road also includes: has coil l3 in wherein one iron core column, another iron core column has coil l4；Coil
L3, the equal turn numbers of coil l4；Coil l3, the Same Name of Ends of coil l4 link together, between coil l3, the different name end of coil l4
Connect diode d3.One end of diode d3 is connected with certain one end of IGCT d1, IGCT d2, to ensure that the first has harmonic wave
In the saturable reactor of rectifying path, the current potential of all semiconductor device is close, and voltage-to-ground is relatively low.
If the saturable reactor rated voltage that the first has harmonic wave rectification path is u1.The first has harmonic wave rectification path
Saturable reactor accesses the power system that rated voltage is u1, when control circuit 4 controls IGCT d1 and IGCT d2 full cut-off
When, coil l1, coil l2 will have exciting current to flow through, and exciting current flows through resistance r1, resistance r2；In resistance r1, resistance r2 two
End produces alternating voltage.Resistance r1, resistance r2 provide the alternating-current voltage source producing DC current.Resistance r1, resistance r2 two ends
It is parallel with IGCT d1, IGCT d2 respectively；Due to IGCT d1 and IGCT d2 full cut-off, IGCT d1 and IGCT d2 is whole
Current circuit does not work, and the DC current in coil l1, coil l2 is equal to zero.Saturable reactor has maximum reactance value zmax.
When control circuit 4 controls IGCT d1 and IGCT d2 entirely to turn on, IGCT d1 and IGCT d2 is just changed into two
Pole pipe characteristic, IGCT d1 and IGCT d2 respectively constitute half-wave rectifying circuit.Coil l1, the DC current of coil l2 reach
Big design load.Saturable reactor has minimum reactance value zmin.
Control circuit 4 controls the size of IGCT d1 and IGCT d2 rectification flow, direct current in controllable coil l1, coil l2
The size of electric current, realizes controlling the size of saturable reactor reactance value.Control circuit 4 continuous control IGCT d1 and IGCT d2
The size of rectification flow, can in continuous control coil l1, coil l2 DC current size, realize the company of saturable reactor reactance value
Continuous regulation, saturable reactor reactance value adjusts between the minimum and maximum, changes.
Coil l1 and coil l3 is wound in same iron core column, and coil l2 and coil l4 is wound in same iron core column；Due to line
Circle l1 and coil l2 equal turn numbers, coil l3 and coil l4 equal turn numbers, coil l1 is electric with the power frequency (fundamental wave) at coil l2 two ends
Pressure is equal, so, coil l3 is equal with power frequency (fundamental wave) voltage at coil l4 two ends.Diode d3 two ends power frequency (fundamental wave) voltage
Equal；Due to Engineering Error, if diode d3 two ends produce power frequency (fundamental wave) voltage error, the power frequency that diode d3 flows through
The rectified value of (fundamental wave) electric current is also not more than exciting current peak value.Exciting current peak value very little, during approximate analyses, can neglect
Slightly.
During the size of control circuit 4 control IGCT d1 and IGCT d2 rectification flow, the electric current in coil l1, coil l2 contains
There is higher hamonic wave, higher hamonic wave can produce higher harmonic voltage on coil l3 and coil l4, and experiment shows, in coil l3 and line
The amplitude of the higher harmonic voltage producing respectively on circle l4 is equal, but phase place is unequal.Thus, will produce at diode d3 two ends
Raw higher harmonic voltage.Coil l3, coil l4, diode d3 constitute higher hamonic wave commutating circuit.Diode d3 has harmonic wave rectification
Electric current flows through, and that is, diode d3 constitutes harmonic wave rectification path.
Experiment shows, the IGCT d1 and IGCT d2 of existing saturable reactor, no matter be fully on, or not exclusively
Conducting, the fundamental wave of saturable reactor electric current and the phase relation of triple-frequency harmonics are all 180 °.Increase diode d3 and its harmonic wave is whole
After logical circulation road, when IGCT d1 and IGCT d2 not exclusively turn on, the fundamental wave of saturable reactor electric current and the phase place of triple-frequency harmonics
Relation is all 180 °；When IGCT d1 and IGCT d2 is fully on, the fundamental wave of saturable reactor electric current and the phase of triple-frequency harmonics
Position relation is all 0 °.It can be seen that, after increasing diode d3 and its harmonic wave rectification path, be conducive to controlling the base of saturable reactor electric current
Ripple and the proportionate relationship of triple-frequency harmonics.
Experiment shows, due to increasing diode d3 and its harmonic wave rectification path, the transient response time contracting of saturable reactor
Short, the harmonic content of saturable reactor reduces.
The saturable reactor that shown in Fig. 2, the first has harmonic wave rectification path is single-phase saturable reactor.Can be single-phase full
It is generalized to three-phase saturation electric reactor with reactor.Promotion method is common knowledge, no longer burden.
Embodiment 2:
Second has the structure of the saturable reactor of harmonic wave rectification path and connected mode as shown in Figure 3.Including saturation electricity
Anti- device terminal i 1, saturable reactor terminal ii2, saturable reactor closed loop iron core 3, control circuit 4.Saturable reactor closed loop ferrum
At least two sectional areas of core 3 are equal, iron core column that is all having coil；This two iron core column each at least can be formed one without
Cross the magnetic flux closed loop of other side's iron core column.
The equal iron core column of 3 two sectional areas of saturable reactor closed loop iron core, wherein one iron core column has coil l3, line
Circle l5；Coil l4, coil l6 are had on another iron core column；Coil l3, the equal turn numbers of coil l4, coil l5, the circle of coil l6
Number is equal.Coil l3, the Same Name of Ends of coil l4 connect saturable reactor terminal i1, and the different name end of coil l3 connects the same of coil l5
Name end, the different name end of coil l4 connects the Same Name of Ends of coil l6, and coil l5, the different name end of coil l6 are respectively through positive IGCT
D1, reverse IGCT d2 connect saturable reactor terminal ii2；IGCT d1, IGCT d2 two ends also distinguish parallel resistance r1,
Resistance r2, resistance r1, resistance r2 resistance equal；IGCT d1, the control terminal of IGCT d2 connect control circuit 4 respectively.
Control circuit 4 controls the size of IGCT d1 and IGCT d2 Trigger Angle, realizes continuously adjusting IGCT d1 and crystalline substance
The size of brake tube d2 rectification flow.
It is also connected with diode d3 between the different name end of coil l3 and the different name end of coil l4.
If the saturable reactor rated voltage that second has harmonic wave rectification path is u1.Second has harmonic wave rectification path
Saturable reactor accesses the power system that rated voltage is u1, when control circuit 4 controls IGCT d1 and IGCT d2 full cut-off
When, coil l3, coil l4, coil l5, coil l6 will have exciting current to flow through, and exciting current flows through resistance r1, resistance r2, in electricity
Resistance r1, resistance r2 two ends produce alternating voltage.Resistance r1, resistance r2 provide the alternating-current voltage source producing DC current.Resistance
R1, resistance r2 two ends are parallel with IGCT d1, IGCT d2 respectively；Due to IGCT d1 and IGCT d2 full cut-off, IGCT
D1 and IGCT d2 rectification circuit do not work, and the DC current in coil l3, coil l4, coil l5, coil l6 is equal to zero.Saturation
Reactor has maximum reactance value zmax.
When control circuit 4 controls IGCT d1 and IGCT d2 entirely to turn on, IGCT d1 and IGCT d2 is just changed into two
Pole pipe characteristic, IGCT d1 and IGCT d2 respectively constitute half-wave rectifying circuit.Coil l3, coil l4, coil l5, coil l6
DC current reaches design maximum value.Saturable reactor has minimum reactance value zmin.
Control circuit 4 controls the size of IGCT d1 and IGCT d2 rectification flow, controllable coil l3, coil l32, coil
The size of DC current in l5, coil l6, realizes controlling the size of saturable reactor reactance value.Control circuit 4 continuous control is brilliant
Brake tube d1 and the size of IGCT d2 rectification flow, can continuous control coil l3, coil l4, DC current in coil l5, coil l6
Size, realize continuously adjusting of saturable reactor reactance value, saturable reactor reactance value is adjusted between the minimum and maximum
Section, change.
Coil l3 and coil l5 is wound in same iron core column, and coil l4 and coil l6 is wound in same iron core column；Due to line
Circle l3 and coil l5 equal turn numbers, coil l4 and coil l6 equal turn numbers, power frequency (fundamental wave) electricity that coil l3 is connected with coil l5
Pressure, power frequency (fundamental wave) voltage connected with coil l6 equal to coil l4；So, the power frequency (fundamental wave) at coil l3 and coil l4 two ends
Voltage is equal.Diode d3 two ends power frequency (fundamental wave) voltage is equal；Due to Engineering Error, if diode d3 two ends produce power frequency
(fundamental wave) voltage error, the rectified value of power frequency (fundamental wave) electric current that diode d3 flows through also is not more than exciting current peak value.Encourage
Magnetic current peak very little, during approximate analyses, can ignore.
During the size of control circuit 4 control IGCT d1 and IGCT d2 rectification flow, coil l3, coil l4, coil l5, line
Electric current in circle l6 contains higher hamonic wave, and higher hamonic wave can produce higher harmonic voltage on coil l3 and coil l4, tests table
Bright, equal with the amplitude of the higher harmonic voltage producing respectively on coil l4 in coil l3, but phase place is unequal.Thus, exist
Diode d3 two ends will produce higher harmonic voltage.Coil l3, coil l4, diode d3 constitute higher hamonic wave commutating circuit.Two
Pole pipe d3 has harmonic wave rectification electric current to flow through, and that is, diode d3 constitutes harmonic wave rectification path.
Experiment shows, the IGCT d1 and IGCT d2 of existing saturable reactor, no matter be fully on, or not exclusively
Conducting, the fundamental wave of saturable reactor electric current and the phase relation of triple-frequency harmonics are all 180 °.Increase diode d3 and its harmonic wave is whole
After logical circulation road, when IGCT d1 and IGCT d2 not exclusively turn on, the fundamental wave of saturable reactor electric current and the phase place of triple-frequency harmonics
Relation is all 180 °；When IGCT d1 and IGCT d2 is fully on, the fundamental wave of saturable reactor electric current and the phase of triple-frequency harmonics
Position relation is all 0 °.It can be seen that, after increasing diode d3 and its harmonic wave rectification path, be conducive to controlling the base of saturable reactor electric current
Ripple and the proportionate relationship of triple-frequency harmonics.
Experiment shows, due to increasing diode d3 and its harmonic wave rectification path, the transient response time contracting of saturable reactor
Short, the harmonic content of saturable reactor reduces.
Coil l3, the number of turn sum of coil l5 are equal to the number of turn of existing saturable reactor coil l1, coil l2, coil l4
Number of turn sum is equal to the number of turn of existing saturable reactor coil l2.Second have the saturable reactor of harmonic wave rectification path with existing
Saturable reactor compares, and does not increase weight and volume.
The present embodiment and embodiment 1 analysis method identical part, no longer burden.
Embodiment 3:
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
The third has the structure of the saturable reactor of harmonic wave rectification path and connected mode as shown in Figure 4.Including saturation electricity
Anti- device terminal i 1, saturable reactor terminal ii2, saturable reactor closed loop iron core 3, control circuit 4.Saturable reactor closed loop ferrum
At least two sectional areas of core 3 are equal, iron core column that is all having coil；This two iron core column each at least can be formed one without
Cross the magnetic flux closed loop of other side's iron core column.
The equal iron core column of 3 two sectional areas of saturable reactor closed loop iron core, wherein one iron core column has coil l3, line
Circle l5；Coil l4, coil l6 are had on another iron core column；Coil l3, the equal turn numbers of coil l4, coil l5, the circle of coil l6
Number is equal, and coil l3 is unequal with the number of turn of coil l5.Coil l3, the Same Name of Ends of coil l4 connect saturable reactor terminal i 1,
The different name end of coil l3 connects the Same Name of Ends of coil l6, and the different name end of coil l4 connects the Same Name of Ends of coil l5, coil l5, coil
The different name end of l6 connects saturable reactor terminal ii2 through positive IGCT d1, reverse IGCT d2 respectively；IGCT d1, brilliant lock
The two ends of pipe d2 also respectively parallel resistance r1, resistance r2, resistance r1, resistance r2 resistance equal；IGCT d1, IGCT d2
Control terminal connects control circuit 4 respectively.
Control circuit 4 controls the size of IGCT d1 and IGCT d2 Trigger Angle, realizes continuously adjusting IGCT d1 and crystalline substance
The size of brake tube d2 rectification flow.
It is also connected with diode d3 between the different name end of coil l3 and the different name end of coil l4.
If the saturable reactor rated voltage that the first has harmonic wave rectification path is u1.The first has harmonic wave rectification path
Saturable reactor accesses the power system that rated voltage is u1, when control circuit 4 controls IGCT d1 and IGCT d2 full cut-off
When, coil l3, coil l4, coil l5, coil l6 will have exciting current to flow through, and exciting current flows through resistance r1, resistance r2, in electricity
Resistance r1, resistance r2 two ends produce alternating voltage.Resistance r1, resistance r2 provide the alternating-current voltage source producing DC current.Resistance
R1, resistance r2 two ends are parallel with IGCT d1, IGCT d2 respectively；Due to IGCT d1 and IGCT d2 full cut-off, IGCT
D1 and IGCT d2 rectification circuit do not work, and the DC current in coil l3, coil l32, coil l5, coil l6 is equal to zero.Full
There is maximum reactance value zmax with reactor.
When control circuit 4 controls IGCT d1 and IGCT d2 entirely to turn on, IGCT d1 and IGCT d2 is just changed into two
Pole pipe characteristic, IGCT d1 and IGCT d2 respectively constitute half-wave rectifying circuit.Coil l3, coil l4, coil l5, coil l6
DC current reaches design maximum value.DC current in coil l4, coil l5 is directed downward, straight in coil l3, coil l6
The stream sense of current is upward.Coil l3, coil l5 are in same iron core column, if the equal turn numbers of coil l3, coil l5, coil l3
The magnetic potential producing in iron core column is equal in magnitude with the magnetic potential that coil l5 produces in iron core column, in opposite direction, produces in iron core column
Raw composite magnetic power is equal to zero.In the same manner, coil l4, coil l6 be in same iron core column, if the number of turn phase of coil l4, coil l6
Deng, in iron core column produce composite magnetic power be equal to zero.
Because the number of turn of regulation coil l3, coil l5 is unequal, coil l3, the equal turn numbers of coil l4, coil l5 and line
The equal turn numbers of circle l6；The composite magnetic power producing in two iron core column is not equal to direct current flux in zero, and an iron core column upward,
Direct current flux in another iron core column is down.Coil l3 is bigger with the unequal degree of the coil l5 number of turn, straight in iron core column
Stream magnetic flux is bigger.Direct current flux in iron core column is bigger, the idle electricity of exchange that coil l3, coil l4, coil l5, coil l6 produce
Stream is bigger, and the reactance value of saturable reactor is less.According to design requirement, when control circuit 4 controls IGCT d1 and brilliant lock
When pipe d2 turns on entirely, saturable reactor has minimum reactance value zmin.
Control circuit 4 controls the size of IGCT d1 and IGCT d2 rectification flow, controllable coil l3, coil l4, coil
The size of DC current in l5, coil l6, realizes controlling the size of saturable reactor reactance value.Control circuit 4 continuous control is brilliant
Brake tube d1 and the size of IGCT d2 rectification flow, can continuous control coil l3, coil l4, DC current in coil l5, coil l6
Size, realize continuously adjusting of saturable reactor reactance value, saturable reactor reactance value is adjusted between the minimum and maximum
Section, change.
Coil l3 and coil l5 is wound in same iron core column, and coil l4 and coil l6 is wound in same iron core column；Due to line
Circle l3 and coil l5 equal turn numbers, coil l4 and coil l6 equal turn numbers, power frequency (fundamental wave) electricity that coil l3 is connected with coil l6
Pressure, power frequency (fundamental wave) voltage connected with coil l5 equal to coil l4；So, the power frequency (fundamental wave) at coil l3 and coil l4 two ends
Voltage is equal.Diode d3 two ends power frequency (fundamental wave) voltage is equal；Due to Engineering Error, if diode d3 two ends produce power frequency
(fundamental wave) voltage error, the rectified value of power frequency (fundamental wave) electric current that diode d3 flows through also is not more than exciting current peak value.Encourage
Magnetic current peak very little, during approximate analyses, can ignore.
During the size of control circuit 4 control IGCT d1 and IGCT d2 rectification flow, coil l3, coil l4, coil l5, line
Electric current in circle l6 contains higher hamonic wave, and higher hamonic wave can produce higher harmonic voltage on coil l3 and coil l4, tests table
Bright, equal with the amplitude of the higher harmonic voltage producing respectively on coil l4 in coil l3, but phase place is unequal.Thus, exist
Diode d3 two ends will produce higher harmonic voltage.Coil l3, coil l4, diode d3 constitute higher hamonic wave commutating circuit.Two
Pole pipe d3 has harmonic wave rectification electric current to flow through, and that is, diode d3 constitutes harmonic wave rectification path.
Experiment shows, the IGCT d1 and IGCT d2 of existing saturable reactor, no matter be fully on, or not exclusively
Conducting, the fundamental wave of saturable reactor electric current and the phase relation of triple-frequency harmonics are all 180 °.Increase diode d3 and its harmonic wave is whole
After logical circulation road, when IGCT d1 and IGCT d2 not exclusively turn on, the fundamental wave of saturable reactor electric current and the phase place of triple-frequency harmonics
Relation is all 180 °；When IGCT d1 and IGCT d2 is fully on, the fundamental wave of saturable reactor electric current and the phase of triple-frequency harmonics
Position relation is all 0 °.It can be seen that, after increasing diode d3 and its harmonic wave rectification path, be conducive to controlling the base of saturable reactor electric current
Ripple and the proportionate relationship of triple-frequency harmonics.
Experiment shows, due to increasing diode d3 and its harmonic wave rectification path, the transient response time contracting of saturable reactor
Short, the harmonic content of saturable reactor reduces.
Coil l3, the number of turn sum of coil l5 are equal to the number of turn of existing saturable reactor coil l1, coil l2, coil l4
Number of turn sum is equal to the number of turn of existing saturable reactor coil l2.Second have the saturable reactor of harmonic wave rectification path with existing
Saturable reactor compares, and does not increase weight and volume.
In addition, the third saturable reactor having harmonic wave rectification path can also increase coil wherein in an iron core column
L7, another iron core column increases coil l8；Coil l7, the equal turn numbers of coil l8；Coil l7, the Same Name of Ends of coil l8 connect
Together, coil l7, the different name end of coil l8 connect diode d4.One end of diode d4 and IGCT d3, IGCT d4
Certain one end connects, to ensure that the third has the current potential of all semiconductor device in the saturable reactor of harmonic wave rectification path close,
And voltage-to-ground is relatively low.Experiment shows, increases coil l7, the harmonic wave rectification loop of coil l8, diode d4 composition, can improve humorous
Ripple rectifying path effect.Shortcoming is exactly to increase the complexity of structure.
The present embodiment and embodiment 1 analysis method identical part, no longer burden.
A kind of saturable reactor having harmonic wave rectification path of the present invention can be manufactured and designed with prior art, completely can be real
Existing, there is broad prospect of application.
Claims (9)
1. a kind of saturable reactor having harmonic wave rectification path, is characterized in that, it is single-phase, simple including single-phase structure
Saturable reactor, the simple saturable reactor of single-phase structure has saturable reactor closed loop iron core, in saturable reactor closed loop ferrum
Core respectively carry coil iron core column on set up at least one harmonic wave rectification path unit, each harmonic wave rectification path unit by
A pair of coil and diode coil being connected with this are constituted, and this is arranged on the difference of saturable reactor closed loop iron core to coil
In iron core column；
Described harmonic wave rectification path unit includes coil l3, coil l4, and both are located in different iron core column, coil l3, coil
The Same Name of Ends of l4 connects, and connects diode d3 between different name end, and one end of diode d3 is then electric with the saturation having harmonic wave rectification path
The terminal ii of anti-device connects.
2. a kind of saturable reactor having harmonic wave rectification path, is characterized in that, it is single-phase, simple including single-phase structure
Saturable reactor, the simple saturable reactor of single-phase structure has saturable reactor closed loop iron core, in saturable reactor closed loop ferrum
Core respectively carry coil iron core column on set up at least one harmonic wave rectification path unit, each harmonic wave rectification path unit by
A pair of coil and diode coil being connected with this are constituted, and this is arranged on the difference of saturable reactor closed loop iron core to coil
In iron core column；
Described harmonic wave rectification path unit includes coil l3, coil l4, and both are located in different iron core column；Coil l3, coil
The Same Name of Ends of l4 is connected with the terminal i of the saturable reactor having harmonic wave rectification path after connecting, between different name end with diode d3 even
Connect；Meanwhile, coil l3, the different name end of coil l4 are also connected with the Same Name of Ends of primary coil in respective iron core column respectively.
3. a kind of saturable reactor having harmonic wave rectification path, is characterized in that, it is single-phase, simple including single-phase structure
Saturable reactor, the simple saturable reactor of single-phase structure has saturable reactor closed loop iron core, in saturable reactor closed loop ferrum
Core respectively carry coil iron core column on set up at least one harmonic wave rectification path unit, each harmonic wave rectification path unit by
A pair of coil and diode coil being connected with this are constituted, and this is arranged on the difference of saturable reactor closed loop iron core to coil
In iron core column；
Described harmonic wave rectification path unit includes coil l3, coil l4, and both are located in different iron core column；Coil l3, coil
The Same Name of Ends of l4 is connected with the terminal i of the saturable reactor having harmonic wave rectification path after connecting, between different name end with diode d3 even
Connect；Meanwhile, different name end is connected with the Same Name of Ends of primary coil in another iron core column.
4. there is the saturable reactor of harmonic wave rectification path as claimed in claim 3, it is characterized in that, then set up a harmonic wave path
Unit, increases coil l7 and coil l8 in two different iron core column respectively；Coil l7, the Same Name of Ends of coil l8 are connected to one
Rise, coil l7, the different name end of coil l8 connect diode d4；One end of diode d4 is connected with terminal ii.
5. there is the saturable reactor of harmonic wave rectification path as claimed in claim 4, it is characterized in that, described coil l7, coil l8
Equal turn numbers.
6. the as claimed in claim 1 or 2 or 3 or 4 saturable reactor having harmonic wave rectification path, is characterized in that, described coil
L3, coil l4 equal turn numbers.
7. the as claimed in claim 1 or 2 or 3 or 4 saturable reactor having harmonic wave rectification path, is characterized in that, described coil
L3 is equal with the amplitude of the higher harmonic voltage producing respectively on coil l4, but phase place is unequal, and diode d3 has harmonic wave whole
Stream electric current flows through, and constitutes harmonic wave rectification path.
8. there is the saturable reactor of harmonic wave rectification path as claimed in claim 4, it is characterized in that, described coil l7, coil l8
The amplitude of the upper higher harmonic voltage producing respectively is equal, but phase place is unequal, and diode d4 has harmonic wave rectification electric current to flow through,
Constitute harmonic wave rectification path.
9. a kind of saturable reactor having harmonic wave rectification path, is characterized in that, it is arbitrary described single-phase using claim 1-4
The three-phase having the saturable reactor of harmonic wave rectification path has the saturable reactor of harmonic wave rectification path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224726.8A CN104779044B (en) | 2015-05-05 | 2015-05-05 | Saturable reactor with harmonic rectification access |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224726.8A CN104779044B (en) | 2015-05-05 | 2015-05-05 | Saturable reactor with harmonic rectification access |
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| Publication Number | Publication Date |
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| CN104779044A CN104779044A (en) | 2015-07-15 |
| CN104779044B true CN104779044B (en) | 2017-01-25 |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2157572C1 (en) * | 1999-04-28 | 2000-10-10 | Научно-технический центр Всероссийского электротехнического института им. В.И. Ленина | Device for raising saturable reactor speed of response |
| CN101383220B (en) * | 2008-07-02 | 2010-06-02 | 王学才 | Dry magnet controlled reactor |
| CN104538964A (en) * | 2014-12-01 | 2015-04-22 | 国家电网公司 | Harmonic suppression device based on epitaxy delta controllable reactor connection |
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