CN203722493U - N-output single-phase 2N+2 switch group MMC rectifier - Google Patents
N-output single-phase 2N+2 switch group MMC rectifier Download PDFInfo
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- CN203722493U CN203722493U CN201420055697.8U CN201420055697U CN203722493U CN 203722493 U CN203722493 U CN 203722493U CN 201420055697 U CN201420055697 U CN 201420055697U CN 203722493 U CN203722493 U CN 203722493U
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Abstract
The utility model provides an N-output single-phase 2N+2 switch group MMC rectifier. The rectifier comprises N alternating current input power supplies, N alternating current inductors, a first bridge arm, a second bridge arm, and a rectification output terminal load, the first bridge arm and the second bridge arm are both formed by series connection of N+1 switch groups and two inductors, the ith switches of the first bridge arm and the second bridge arm are both formed by series connection of n power switch units, the value of i ranges from 1 to N+1, two terminals of the kth alternating current power supply serve as the kth line input, and the value of k ranges from one to N (N>2). According to the rectifier, carrier phase-shifting PWM is employed to control the rectifier, N input alternating current power supplies are converted to N-line 2n+1 level alternating current input, the alternating current is rectified and superposed and then supplies power for the load, the voltage stress born by each switch tube in the MMC power switch units is merely 1/n of the voltage of a direct current power supply, the problem of voltage balancing of the switch tube is solved, and the rectifier is applicable to occasions of multi-alternating-current power supply input, high voltage and high power.
Description
Technical field
The utility model relates to module combination multi-level converter (MMC) field, is specifically related to a kind of N input single-phase 2N+2 switches set MMC rectifier.
Background technology
, there is the direction of two kinds of improvement rectifiers at present power rectifier forward miniaturization, high reliability and low-loss future development: reduce passive device or improve rectifier topology structure and using and reduce active device as the new development that reduces active device direction under this trend.Single-phase 2N+2 switching rectifier has reduced 2N-2 switch and corresponding drive circuit with respect to traditional 4N switching rectifier, in the application of considering cost and volume, occupies certain advantage.Yet the single-phase input in N road of 2N+2 switching rectifier is all converted to two level, input AC waveform is poor.In addition, half that the voltage stress that in 2N+2 switch, each switch bears is DC bus-bar voltage, and there is the voltage-sharing of 2N+2 switching tube, this has limited single-phase 2N+2 switching rectifier greatly in the application of high pressure and large-power occasions.
In recent years, multilevel technology is constantly promoted, and successful Application is at industrial circles such as high voltage direct current transmission, Electric Drive, active power filtering, static synchroballistic, common voltage-type multi-level rectifier topology is broadly divided into case bit-type and the large class of unit cascaded type two at present.Module combination multi-level converter (Modular Multilevel Converter, MMC) as a kind of novel many level topologys, except having advantages of traditional multi-level rectifier, module combination multi-level rectifier adopts Modular Structure Design, is convenient to System Expansion and redundancy of effort; Have unbalanced operation ability, fault traversing and recovery capability, system reliability is high; Owing to having common DC bus, module combination multi-level rectifier is particularly useful for HVDC (High Voltage Direct Current) transmission system application.Yet, when the alternating current circuit of N bar different frequency connected, needing 2N MMC rectifier, this has increased engineering cost greatly.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, proposes a kind of N input single-phase 2N+2 switches set MMC rectifier without direct current biasing.
The technical solution adopted in the utility model is as follows.
N input single-phase 2N+2 switches set MMC rectifier comprises N alternating current input power supplying, a N AC inductance, the first brachium pontis, the second brachium pontis and load; Described the first brachium pontis is in series by N+1 switches set and 2 inductance, and described the second brachium pontis is in series by N+1 switches set and 2 inductance; I switches set of the first brachium pontis is in series by n power switch unit, and i switches set of the second brachium pontis is in series by n power switch unit, and wherein the value of i is 1～N+1; The two ends of k alternating current input power supplying are as the input of k road, and wherein the value of k is 1～N, N>2, and n is positive integer.
In above-mentioned N input single-phase 2N+2 switches set MMC rectifier, two inductance of the first brachium pontis intercouple, and form a pair of coupling inductance; Two inductance of the second brachium pontis intercouple, and form a pair of coupling inductance.
In above-mentioned N input single-phase 2N+2 switches set MMC rectifier, in described N input single-phase 2N+2 switches set MMC rectifier, the lower end of the 1st switches set of the first brachium pontis is connected with one end of the first inductance of 2 inductance in the first brachium pontis, and the other end of the first inductance of the first brachium pontis is connected with the upper end of the 2nd switches set of the first brachium pontis; The lower end of i switches set of the first brachium pontis is connected with the upper end of i+1 switches set of the first brachium pontis, and wherein the value of i is 2～N-1; The lower end of N switches set of the first brachium pontis is connected with one end of the second inductance of the first brachium pontis, and the other end of the second inductance of the first brachium pontis is connected with the upper end of N+1 switches set of the first brachium pontis; The circuit structure of the circuit structure of the second brachium pontis and the first brachium pontis is in full accord; One end of k alternating current input power supplying is connected with the upper end of k+1 switches set of the first brachium pontis, the other end of k alternating current input power supplying is connected with one end of k AC inductance, the other end of k AC inductance is connected with the upper end of k+1 switches set of the second brachium pontis, and wherein the value of k is 1～N-1; One end of N alternating current input power supplying is connected with the lower end of N switches set of the first brachium pontis, the other end of N alternating current input power supplying is connected with one end of N AC inductance, and the other end of N AC inductance is connected with the lower end of N switches set of the second brachium pontis; The 1st upper end of switches set, one end of load of the upper end of the 1st switches set of the first brachium pontis and the second brachium pontis are connected, the other end of load with the lower end of N switches set of the first brachium pontis, the lower end of N switches set of the second brachium pontis, hold and be connected.
In above-mentioned N input single-phase 2N+2 switches set MMC rectifier, power switch unit consists of the first switching tube, second switch pipe, the first diode, the second diode and electric capacity.Wherein, the positive pole of electric capacity is connected with the collector electrode of the first switching tube, the negative electrode of the first diode, the emitter of the first switching tube is connected with the anode of the first diode, the negative electrode of the collector electrode of second switch pipe, the second diode, and the emitter of second switch pipe is connected with the anode of the second diode, the negative pole of electric capacity; The collector electrode of second switch pipe is as the first output, and the emitter of second switch pipe is as the second output.
In above-mentioned N input single-phase 2N+2 switches set MMC rectifier, the second output of j power switch unit of i switches set of the first brachium pontis is connected with the first output of j+1 power switch unit of i switches set of the first brachium pontis, wherein j value is 1～n-1, and i value is 1～N+1; The second output of j power switch unit of i switches set of the second brachium pontis is connected with the first output of j+1 power switch unit of i switches set of the first brachium pontis.
In the control method of above-mentioned N input single-phase 2N+2 switches set MMC rectifier, adopt phase-shifting carrier wave PWM to control the opening and turn-offing of each switching tube of each switches set of the first brachium pontis and each switches set of the second brachium pontis; I switches set (B of the first brachium pontis
0i) j power switch unit (SM
b0ij) and i switches set (B of the second brachium pontis
1i) j power switch unit (SM
b1ij) all adopt identical triangular wave as j carrier wave C
j, wherein the value of j is 1～n; N carrier wave (C
1, C
2..., C
n) 360 °/n of lagging phase angle successively; K alternating current input power supplying (u
sk) the end (a of the first brachium pontis
k) adopt k sinusoidal wave R of the first brachium pontis
sakk direct current biasing R superposes
dokobtain k modulating wave R of the first brachium pontis
sak+ R
dok, wherein the value of k is 1～N; K alternating current input power supplying (u
sk) the end (b of the second brachium pontis
k) adopt k sinusoidal wave R of the second brachium pontis
sbkk direct current biasing R superposes
dokobtain k modulating wave R of the second brachium pontis
sbk+ R
dok; The k of a first brachium pontis sinusoidal wave R
sakk the sinusoidal wave R with the second brachium pontis
sbk180 ° of phase phasic differences.
In above-mentioned control method, k modulating wave R of the first brachium pontis
sak+ R
dokwith j carrier wave C
jby k comparator, as k modulating wave R of the first brachium pontis
sak+ R
dokbe greater than j carrier wave C
jtime, k comparator output high level, as k modulating wave R of the first brachium pontis
sak+ R
dokbe less than j carrier wave C
jtime, k comparator output low level, wherein the value of k is 1～N; The output of the 1st comparator is as the control level of the second switch pipe gate pole of j power switch unit of the 1st switches set of the first brachium pontis; The output of k-1 comparator is by k-1 not gate, the output of k-1 not gate and the output of k comparator obtain the control level of second switch pipe gate pole of j power switch unit of k switches set of the first brachium pontis by k-1 XOR gate, wherein the value of k is 2～N; The output of N comparator obtains the control level of second switch pipe gate pole of j power switch unit of N+1 switches set of the first brachium pontis by N not gate; K modulating wave R of the second brachium pontis
sbk+ R
dokwith j carrier wave C
jby N+k comparator, as k modulating wave R of the second brachium pontis
sbk+ R
dokbe greater than j carrier wave C
jtime, N+k comparator output high level, as k modulating wave R of the second brachium pontis
sbk+ R
dokbe less than j carrier wave C
jtime, N+k comparator output low level, wherein the value of k is 1～N; The output of N+1 comparator is as the control level of the second switch pipe gate pole of j power switch unit of the 1st switches set of the second brachium pontis; The output of N+k-1 comparator is by N+k-1 not gate, the output of N+k-1 not gate and the output of N+k comparator obtain the control level of second switch pipe gate pole of j power switch unit of k switches set of the second brachium pontis by N-1+k-1 XOR gate, wherein the value of k is 2～N; The output of 2*N comparator obtains the control level of second switch pipe gate pole of j power switch unit of N+1 switches set of the second brachium pontis by 2*N not gate.
The mode of operation of described N input single-phase 2N+2 switches set MMC rectifier comprises same mode of operation and alien frequencies mode of operation frequently, and in frequency mode of operation, the frequency of N road input is identical, and amplitude is not identical; In alien frequencies mode of operation, the frequency of N road input and amplitude are all different.
Compared with prior art, the advantage the utlity model has is: N road three-phase alternating current input power is all converted to N road 2n+1 level and exchanges input, input current waveform is of high quality, the voltage stress that in power switch unit, each switching tube bears is only the 1/n of DC bus-bar voltage, can guarantee that the voltage that in the rectifier course of work, all switching tubes bear equates, has well solved the voltage-sharing of switching tube simultaneously.Compare with existing single-phase 2N+2 switching rectifier, the N road three-phase alternating current input power of N input single-phase 2N+2 switches set MMC rectifier provided by the utility model is all converted to N road 2n+1 level and exchanges input, and the quality of input AC current waveform is greatly improved.In addition, the voltage stress bearing of each switching tube is only the 1/n of DC bus-bar voltage, and control method provided by the utility model equates the voltage that in the rectifier course of work, all switching tubes bear, well solved the voltage-sharing of switching tube, this will be very beneficial for the application of N input single-phase 2N+2 switches set MMC rectifier in high pressure and large-power occasions.Compare with existing MMC rectifier, N input single-phase 2N+2 switches set MMC rectifier provided by the utility model has N road and exchanges input, can be directly used in being connected of alternating current circuit of N bar different frequency, greatly reduces engineering cost.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of N input single-phase 2N+2 switches set MMC rectifier of the present utility model;
Fig. 2 is the circuit structure diagram of the power switch unit of the N input single-phase 2N+2 switches set MMC rectifier shown in Fig. 1;
Fig. 3 is the phase-shifting carrier wave PWM control structure figure of the N input single-phase 2N+2 switches set MMC rectifier shown in Fig. 1;
Fig. 4 a, 4b are that three input single-phase eight switches set MMC rectifiers work in respectively with the modulating wave under frequency mode of operation and alien frequencies mode of operation;
Fig. 5 a, 5b are that three input single-phase eight switches set nine level MMC rectifiers work in the simulation waveform figure with frequency mode of operation and alien frequencies mode of operation.
Embodiment
For further setting forth content of the present utility model and feature, below in conjunction with accompanying drawing, specific embodiments of the present utility model is described, but enforcement of the present utility model and protection are not limited to this.
With reference to figure 1, N input single-phase 2N+2 switches set MMC rectifier of the present utility model, comprises N alternating current input power supplying (u
s1, u
s2..., u
sN), a N AC inductance (L
s1, L
s2..., L
sN), the first brachium pontis, the second brachium pontis and load R; Described the first brachium pontis is by N+1 switches set (B
01, B
02..., B
0 (N+1)) and 2 inductance (L
01, L
02) be in series, described the second brachium pontis is by N+1 switches set (B
11, B
12..., B
1 (N+1)) and 2 inductance (L
11, L
12) be in series; I switches set (B of the first brachium pontis
0i) by n power switch unit (SM
b0i1, SM
b0i2..., SM
b0in) be in series, i switches set B of the second brachium pontis
1iby n power switch unit (SM
b1i1, SM
b1i2..., SM
b1in) be in series, wherein the value of i is 1～N+1; K alternating current input power supplying u
sktwo ends as k road input, wherein the value of k is 1～N, N>2.
The 1st switches set B of the first brachium pontis
01lower end p and the first inductance L of the first brachium pontis
01one end connect, the first inductance L of the first brachium pontis
01the other end and the 2nd switches set B of the first brachium pontis
02upper end o connect; I switches set B of the first brachium pontis
0ilower end and i+1 switches set B of the first brachium pontis
0 (i+1)upper end connect, wherein the value of i is 2～N-1; N switches set B of the first brachium pontis
0Nlower end and the second inductance L of the first brachium pontis
02one end connect, the second inductance L of the first brachium pontis
02the other end and N+1 switches set B of the first brachium pontis
0 (N+1)upper end connect; The circuit structure of the circuit structure of the second brachium pontis and the first brachium pontis is in full accord; K alternating current input power supplying u
skone end and k+1 switches set B of the first brachium pontis
0 (k+1)upper end connect, k alternating current input power supplying u
skthe other end and k AC inductance L
skone end connect, k AC inductance L
skthe other end and k+1 switches set B of the second brachium pontis
1 (k+1)upper end connect, wherein the value of k is 1～N-1; N alternating current input power supplying u
sNone end and N switches set B of the first brachium pontis
0Nlower end connect, N alternating current input power supplying u
sNthe other end and N AC inductance L
sNone end connect, N AC inductance L
sNthe other end and N switches set B of the second brachium pontis
1Nlower end connect; The 1st switches set B of the first brachium pontis
01upper end and the 1st switches set B of the second brachium pontis
11one end of upper end, load R connect, N switches set B of the other end of load R and the first brachium pontis
0Nlower end, N switches set B of the second brachium pontis
1Nlower end, hold G to connect.
Fig. 2 illustrates the circuit structure diagram of the power switch unit of the N input single-phase 2N+2 switches set MMC rectifier shown in Fig. 1, and power switch unit is by the first switching tube S
1, second switch pipe S
2, the first diode D
1, the second diode D
2and capacitor C
sMform.Wherein, capacitor C
sMpositive pole and the first switching tube S
1collector electrode, the first diode D
1negative electrode connect, the first switching tube S
1emitter and the first diode D
1anode, second switch pipe S
2collector electrode, the second diode D
2negative electrode connect, second switch pipe S
2emitter and the second diode D
2anode, capacitor C
sMnegative pole connect; Second switch pipe S
2collector electrode as the first output, second switch pipe S
2emitter as the second output.
As shown in Figure 1, i switches set B of the first brachium pontis
0ij power switch unit SM
b0ijthe second output and i switches set B of the first brachium pontis
0ij+1 power switch unit SM
b0i (j+1)the first output connect, wherein j value is 1～n-1, i value is 1～N+1; I switches set B of the second brachium pontis
1ij power switch unit SM
b1ijthe second output and i switches set B of the first brachium pontis
1ij+1 power switch unit SM
b1i (j+1)the first output connect.
Make k road alternating current input power supplying be
:
In formula, U
ofor output voltage.
N input single-phase 2N+2 switches set MMC rectifier shown in Fig. 1 adopts phase-shifting carrier wave PWM to control, as shown in Figure 3.
Adopt phase-shifting carrier wave PWM to control each switches set B of the first brachium pontis
0ieach switches set B with the second brachium pontis
1ithe opening and turn-offing of each switching tube, wherein i value is 1～N+1; I switches set B of the first brachium pontis
0ij power switch unit SM
b0iji the switches set B with the second brachium pontis
1ij power switch unit SM
b1ijall adopt identical triangular wave as j carrier wave C
j, wherein the value of j is 1～n; N carrier wave C
1, C
2..., C
n360 °/n of lagging phase angle successively; K alternating current input power supplying u
skthe end a of the first brachium pontis
kadopt k sinusoidal wave R of the first brachium pontis
sakk direct current biasing R superposes
dokobtain k modulating wave R of the first brachium pontis
sak+ R
dok, wherein the value of k is 1～N; K alternating current input power supplying u
skthe end b of the second brachium pontis
kadopt k sinusoidal wave R of the second brachium pontis
sbkk direct current biasing R superposes
dokobtain k modulating wave R of the second brachium pontis
sbk+ R
dok; The k of a first brachium pontis sinusoidal wave R
sakk the sinusoidal wave R with the second brachium pontis
sbk180 ° of phase phasic differences.
K modulating wave R of the first brachium pontis
sak+ R
dokwith j carrier wave C
jby k comparator, as k modulating wave R of the first brachium pontis
sak+ R
dokbe greater than j carrier wave C
jtime, k comparator output high level, as k modulating wave R of the first brachium pontis
sak+ R
dokbe less than j carrier wave C
jtime, k comparator output low level, wherein the value of k is 1～N; The output of the 1st comparator is as the 1st switches set B of the first brachium pontis
01j power switch unit SM
b01jsecond switch pipe S
2the control level S of gate pole
b01j; The output of k-1 comparator is by k-1 not gate, and the output of k-1 not gate and the output of k comparator obtain k switches set B of the first brachium pontis by k-1 XOR gate
0kj power switch unit SM
b0kjsecond switch pipe S
2the control level S of gate pole
b0kj, wherein the value of k is 2～N; The output of N comparator obtains N+1 switches set B of the first brachium pontis by N not gate
0 (N+1)j power switch unit SM
b0 (N+1) jsecond switch pipe S
2the control level S of gate pole
b0 (N+1) j; K modulating wave R of the second brachium pontis
sbk+ R
dokwith j carrier wave C
jby N+k comparator, as k modulating wave R of the second brachium pontis
sbk+ R
dokbe greater than j carrier wave C
jtime, N+k comparator output high level, as k modulating wave R of the second brachium pontis
sbk+ R
dokbe less than j carrier wave C
jtime, N+k comparator output low level, wherein the value of k is 1～N; The output of N+1 comparator is as the 1st switches set B of the second brachium pontis
11j power switch unit SM
b11jsecond switch pipe S
2the control level S of gate pole
b11j; The output of N+k-1 comparator is by N+k-1 not gate, and the output of N+k-1 not gate and the output of N+k comparator obtain k switches set B of the second brachium pontis by N-1+k-1 XOR gate
1kj power switch unit SM
b1kjsecond switch pipe S
2the control level S of gate pole
b1kj, wherein the value of k is 2～N; The output of 2*N comparator obtains N+1 switches set B of the second brachium pontis by 2*N not gate
1 (N+1)j power switch unit SM
b1 (N+1) jsecond switch pipe S
2the control level S of gate pole
b1 (N+1) j.
Each brachium pontis that described control method can guarantee described rectifier each time be carved with the output voltage u of n power switch unit
sM=E, the output voltage u of N*n power switch unit
sM=0, meet
with
u wherein
b0ibe the output voltage of i switches set of the first brachium pontis, u
b1ibe the output voltage of i switches set of the second brachium pontis, E is the capacitor C of each power switch unit of each switches set of the first brachium pontis and the second brachium pontis
sMvoltage, and have E=U
o/ n, the voltage stress that in power switch unit, each switching tube bears is only the 1/n of DC bus-bar voltage, can guarantee that the voltage that in the rectifier course of work, all switching tubes bear equates, has well solved the voltage-sharing of switching tube simultaneously.
The three input single-phase eight switches set MMC rectifiers of take are example, and Fig. 4 a illustrates it and works in the 1st the modulating wave R with the first brachium pontis under frequency mode of operation
sa1+ R
do1, the first brachium pontis the 2nd modulating wave R
sa2+ R
do2, the first brachium pontis the 3rd modulating wave R
sa3+ R
do3with j carrier wave C
jrelation.From Fig. 4 a, can find out the 1st sinusoidal wave R of the first brachium pontis
sa1, the first brachium pontis the 2nd sinusoidal wave R
sa2the 3rd the sinusoidal wave R with the first brachium pontis
sa3frequency identical, amplitude is not identical.Fig. 4 b illustrates its 1st modulating wave R that works in the first brachium pontis under alien frequencies mode of operation
sa1+ R
do1, the first brachium pontis the 2nd modulating wave R
sa2+ R
do2, the first brachium pontis the 3rd modulating wave R
sa3+ R
do2with j carrier wave C
jrelation.From Fig. 4 b, can find out the 1st sinusoidal wave R of the first brachium pontis
sa1, the first brachium pontis the 2nd sinusoidal wave R
sa2the 3rd the sinusoidal wave R with the first brachium pontis
sa3frequency and amplitude all not identical.The 1st modulating wave R of the second brachium pontis
sb1+ R
do1, the second brachium pontis the 2nd modulating wave R
sb2+ R
do2, the second brachium pontis the 3rd modulating wave R
sb3+ R
do3with j carrier wave C
jrelation and the first brachium pontis the 1st modulating wave R
sa1+ R
do1, the first brachium pontis the 2nd modulating wave R
sa2+ R
do2, the first brachium pontis the 3rd modulating wave R
sa3+ R
do3with j carrier wave C
jrelation identical.
Fig. 5 a is that three input single-phase eight switches set nine level MMC rectifiers (N=3, n=4) work in the simulation waveform figure with frequency mode of operation, is the 1st alternating current input power supplying u successively
s1, the 1st the input u that alternating current input power supplying provides
sS1, the 2nd alternating current input power supplying u
s2, the 2nd the input u that alternating current input power supplying provides
sS2, the 3rd alternating current input power supplying u
s3, the 3rd the input u that alternating current input power supplying provides
sS3, output voltage U
o, from visible the 1st the alternating current input power supplying u of Fig. 5 a
s1, the 2nd alternating current input power supplying u
s2with the 3rd alternating current input power supplying u
s3frequency identical, the 1st alternating current input power supplying u
s1, the 2nd alternating current input power supplying u
s2with the 3rd alternating current input power supplying u
s3amplitude not identical; Fig. 5 b is the simulation waveform figure that three input single-phase eight switches set nine level MMC rectifiers work in alien frequencies mode of operation, is the 1st alternating current input power supplying u successively
s1, the 1st the input u that alternating current input power supplying provides
sS1, the 2nd alternating current input power supplying u
s2, the 2nd the input u that alternating current input power supplying provides
sS2, the 3rd alternating current input power supplying u
s3, the 3rd the input u that alternating current input power supplying provides
sS3, output voltage U
o, from visible the 1st the alternating current input power supplying u of Fig. 5 b
s1, the 2nd alternating current input power supplying u
s2with the 3rd alternating current input power supplying u
s3frequency and amplitude all not identical.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (5)
1.N input single-phase 2N+2 switches set MMC rectifier, is characterized in that: comprise N alternating current input power supplying (
u s1 ,
u s2 ...,
u sN ), a N AC inductance (
l s1 ,
l s2 ...,
l sN ), the first brachium pontis, the second brachium pontis and load (
r); Described the first brachium pontis is by N+1 switches set (B
01, B
02..., B
0 (N+1)) and 2 inductance (
l 01 ,
l 02 ) be in series, described the second brachium pontis is by N+1 switches set (B
11, B
12..., B
1 (N+1)) and 2 inductance (
l 11 ,
l 12 ) be in series; I switches set (B of the first brachium pontis
0i) by n power switch unit (SM
b0i1, SM
b0i2..., SM
b0in) be in series, i switches set (B of the second brachium pontis
1i) by n power switch unit (SM
b1i1, SM
b1i2..., SM
b1in) be in series, wherein the value of i is 1 ~ N+1; K alternating current input power supplying (
u sk ) two ends as k road input, wherein the value of k is 1 ~ N, N>2, n is positive integer.
2. N input single-phase 2N+2 switches set MMC rectifier according to claim 1, is characterized in that: two inductance of the first brachium pontis (
l 01 ,
l 02 ) intercouple, form a pair of coupling inductance; Two inductance of the second brachium pontis (
l 11 ,
l 12 ) intercouple, form a pair of coupling inductance.
3. N input single-phase 2N+2 switches set MMC rectifier according to claim 1, is characterized in that: the 1st switches set (B of the first brachium pontis
01) lower end (p) and the first brachium pontis in 2 inductance the first inductance (
l 01 ) one end connect, the first inductance of the first brachium pontis (
l 01 ) the other end and the 2nd switches set (B of the first brachium pontis
02) upper end (o) connect; I switches set (B of the first brachium pontis
0i) lower end and i+1 switches set (B of the first brachium pontis
0 (i+1)) upper end connect, wherein the value of i is 2 ~ N-1; N switches set (B of the first brachium pontis
0N) lower end and the second inductance of the first brachium pontis (
l 02 ) one end connect, the second inductance of the first brachium pontis (
l 02 ) the other end and N+1 switches set (B of the first brachium pontis
0 (N+1)) upper end connect; The circuit structure of the circuit structure of the second brachium pontis and the first brachium pontis is in full accord; K alternating current input power supplying (
u sk ) one end and k+1 switches set (B of the first brachium pontis
0 (k+1)) upper end connect, k alternating current input power supplying (
u sk ) the other end and k AC inductance (
l sk ) one end connect, k AC inductance (
l sk ) the other end and k+1 switches set (B of the second brachium pontis
1 (k+1)) upper end connect, wherein the value of k is 1 ~ N-1; N alternating current input power supplying (
u sN ) one end and N switches set (B of the first brachium pontis
0N) lower end connect, N alternating current input power supplying (
u sN ) the other end and N AC inductance (
l sN ) one end connect, N AC inductance (
l sN ) the other end and N switches set (B of the second brachium pontis
1N) lower end connect; The 1st switches set (B of the first brachium pontis
01) upper end and the 1st switches set (B of the second brachium pontis
11) upper end, load (
r) one end connect, load (
r) the other end and N switches set (B of the first brachium pontis
0N) lower end, N switches set (B of the second brachium pontis
1N) lower end, hold (
g) connect.
4. N input single-phase 2N+2 switches set MMC rectifier according to claim 1, is characterized in that: power switch unit by the first switching tube (
s 1 ), second switch pipe (
s 2 ), the first diode (
d 1 ), the second diode (
d 2 ) and electric capacity (
c sM ) form, wherein, electric capacity (
c sM ) positive pole and the first switching tube (
s 1 ) collector electrode, the first diode (
d 1 ) negative electrode connect, the first switching tube (S
1) emitter and the first diode (
d 1 ) anode, second switch pipe (
s 2 ) collector electrode, the second diode (
d 2 ) negative electrode connect, second switch pipe (
s 2 ) emitter and the second diode (
d 2 ) anode, electric capacity (
c sM ) negative pole connect; Second switch pipe (
s 2 ) collector electrode as the first output, second switch pipe (
s 2 ) emitter as the second output.
5. N input single-phase 2N+2 switches set MMC rectifier according to claim 1, is characterized in that: i switches set (B of the first brachium pontis
0i) j power switch unit (SM
b0ij) the second output and i switches set (B of the first brachium pontis
0i) j+1 power switch unit (SM
b0i (j+1)) the first output connect, wherein j value is 1 ~ n-1, i value is 1 ~ N+1; I switches set (B of the second brachium pontis
1i) j power switch unit (SM
b1ij) the second output and i switches set (B of the first brachium pontis
1i) j+1 power switch unit (SM
b1i (j+1)) the first output connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420055697.8U CN203722493U (en) | 2014-01-28 | 2014-01-28 | N-output single-phase 2N+2 switch group MMC rectifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420055697.8U CN203722493U (en) | 2014-01-28 | 2014-01-28 | N-output single-phase 2N+2 switch group MMC rectifier |
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| Publication Number | Publication Date |
|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762861A (en) * | 2014-01-28 | 2014-04-30 | 华南理工大学 | N input single-phase 2N+2 switching group MMC rectifier and control method thereof |
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2014
- 2014-01-28 CN CN201420055697.8U patent/CN203722493U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762861A (en) * | 2014-01-28 | 2014-04-30 | 华南理工大学 | N input single-phase 2N+2 switching group MMC rectifier and control method thereof |
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