CN1022529C - High-frequency switch capacity type inverter - Google Patents
High-frequency switch capacity type inverter Download PDFInfo
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- CN1022529C CN1022529C CN 90104016 CN90104016A CN1022529C CN 1022529 C CN1022529 C CN 1022529C CN 90104016 CN90104016 CN 90104016 CN 90104016 A CN90104016 A CN 90104016A CN 1022529 C CN1022529 C CN 1022529C
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- switch
- capacitor
- type inverter
- inverter
- frequency
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Abstract
The present invention relates to a high-frequency switch capacitor type inverter composed of a capacitor and a switch, wherein the switch is composed of a charge switch and a discharge switch which can be composed of a field effect tube or a transistor or an electronic tube or controlled silicon or a gate turn-off thyristor (GTO). The charge switch is operated with a high frequency. When the discharge switch is in a fully open state, the inverter can be used as a direct current-direct current converter. Compared with a low-frequency switch capacitor type inverter, the inverter of the present invention reduces needed energy for transmitting the capacitance of a capacitor under the condition of the same loading capacity of an output belt so as to reduce the volume and the weight of the inverter.
Description
The present invention is a switching capacity type inverter, belongs to the converting means of electric energy form.
Realize that at present electric flux is an inductive type by device _ inverter _ majority that direct current becomes interchange, promptly energy transfer element is wherein served as by inductance or transformer, though this class inverter is being a large amount of to be used, shortcoming such as have that volume is big, Heavy Weight, cost height, efficient are low.In recent years, to have proposed energy transfer element abroad be the inverter of electric capacity or claim pure electric capacity inverter, partly solved the shortcoming of inductive type inverter.She Marusarg of Reno university of American South in June, 1989 is in IEEE PESC'89(U.S. electric and electronics engineers power electronics specialists meeting meeting in 1989) the no inductance switch capacitor type boost type inverter delivered on the collection of thesis is present representational newest fruits.But in the circuit arrangement that Marusarg proposes, the frequency of electric capacity charge and discharge is identical, by the output frequency decision that requires.Generally speaking, this frequency is lower, as power frequency 50HZ(to China) or 60HZ(to the U.S.).So some shortcomings such as volume is big though present pure electric capacity inverter has partly overcome, Heavy Weight because switching frequency is very low, cause energy delivery electric capacity very big, the volume and weight of this pure electric capacity inverter of result is still bigger.
The object of the present invention is to provide the high-frequency switch capacity type inverter that a kind of volume is little, in light weight, cost is low.
The switch of this high-frequency switch capacity type inverter is made up of charge switch 1 and discharge switch 2, and the connected mode of the capacitor of high-frequency switch capacity type inverter is: capacitor (C
1), (C
2) ..., (C
n) be in series in order, the connected mode of the charge switch of high-frequency switch capacity type inverter is: at the two ends up and down of each capacitor respectively with double-pole single throw (S
' 1), (S
' 2) ..., (S
' n) a side be connected, then another upper end then of above-mentioned switch is all linked together, as an input, the lower end of above-mentioned switch the same side is all linked together as another input.The connected mode of the discharge switch of high-frequency switch capacity type inverter is: capacitor (C
1) the upper end, (C
1) and (C
2) tie point, (C
2) and (C
3) tie point ..., (C
N-1) and (C
n) tie point and (C
n) the lower end respectively with single-pole single-throw switch (SPST) (S
1), (S
2), (S
3) ..., (S
n) and (S
N+1) an end be connected, and the other end of above-mentioned each switch is connected together, as an output terminal capacitor (C
1) upper end and capacitor (C
n) the lower end respectively with single-pole single-throw switch (SPST) (S
b) and (S
a) an end be connected, the other end of these two switches links together as another output.Charge switch and discharge switch can be by field effect transistor or transistor or electron tube or controllable silicon and gate turn off thyristor formations such as (GTO).Charge switch is the high frequency action, fills the high frequency characteristics decision of scope perhaps by the switching device in the inverter.
Inverter provided by the present invention under the situation of same output carrying load ability, reduces the capacitance of required energy delivery electric capacity widely, thereby can reduce volume, weight, the cost of inverter greatly, has also improved efficient simultaneously; Under the situation of the energy delivery electric capacity that uses same capacity, can improve the carrying load ability of inverter greatly, this circuit can be widely used in alternating current steady voltage plug, in the drive unit of uninterrupted power supply and motor.
Concrete structure of the present invention is by Fig. 1,2,3,4(a), 4(b), 5,6,7 provide.
Fig. 1 is the circuit structure of high-frequency switch capacity type inverter.
Fig. 2 is for exchanging the output triangular waveform.
Fig. 3 is for exchanging output near sinusoidal staircase waveform.
Fig. 4 (a) realizes the main circuit part of the physical circuit of its switch with the VMOS field-effect transistor for high-frequency switch capacity type inverter.
Fig. 4 (b) is the driving circuit section of VMOS switching tube in the high-frequency switch capacity type inverter shown in Fig. 4 (a).
Fig. 5 is construction profile product figure.
Fig. 6 is actual output waveform figure.
Fig. 7 is the circuit structure diagram of the direct current _ DC converter when removing discharge switch and positive and negative polarity switch short circuit.
Below in conjunction with accompanying drawing the present invention is specified.
The switch of this high-frequency switch capacity type inverter is made up of charge switch 1 and discharge switch 2, and the connected mode of the capacitor of high-frequency switch capacity type inverter is: capacitor (C
1), (C
2) ..., (C
n) be in series in order, the connected mode of the charge switch of high-frequency switch capacity type inverter is: at the two ends up and down of each capacitor respectively with double-pole single throw (S
' 1), (S
' 2) ..., (S
' 3) a side be connected, then another upper end then of above-mentioned switch is all linked together, as an input, the lower end of above-mentioned switch the same side is all linked together as another input.The connected mode of the discharge switch of high-frequency switch capacity type inverter is: capacitor (C
1) the upper end, (C
1) and (C
2) tie point, (C
2) and (C
3) tie point ..., (C
N-1) and (C
n) tie point and (C
n) the lower end respectively with single-pole single-throw switch (SPST) (S
1), (S
2), (S
3) ..., (S
n) and (S
N+1) an end be connected, and the other end of above-mentioned each switch is connected together, as an output, capacitor (C
1) upper end and capacitor (C
n) the lower end respectively with single-pole single-throw switch (SPST) (S
b) and (S
a) an end be connected, the other end of these two switches links together as another output.
C among Fig. 1
1=C
2=C
3=...=C
n=C, charge switch 1(S
' 1, S
' 2..., S
' n) be that high frequency moves discharge switch 2(S
1, S
2..., S
n, S
N+1And S
a, S
b) on request output frequency action.As discharge switch (S
1, S
2..., S
n, S
N+1And S
a, S
b) during by action shown in Figure 2, just can obtain interchange output waveform (triangular wave) shown in Figure 2, utilize the asynchronism(-nization) of each switch conduction in the discharge switch, can be similar to and obtain waveform arbitrarily, as sine wave, triangular wave, the trapezoidal square wave etc. that involves, Fig. 3 is the approximate example of realizing sine wave.P among Fig. 4 (a)
11, P
21, P
bBe P raceway groove VMOS field-effect transistor, N
11', N
12, N
12' ... N
1n, N
1n', N
22, N
23N
2n, N
2n+1, N
aBe N raceway groove VMOS field-effect transistor, D
11, D
11', D
12, D
12' ... D
1n, D
1n' be fast recovery diode, D
a, D
b, D
21, D
221, D
222, D
223, D
224D
2n1, D
2n2, D
2n3, D
2n4, D
2, n+1Be general rectification diode, S
2～S
nBe the bridge-type two-way switch.Among Fig. 4 (b) ,～be sine power supply ,+V is a direct voltage, and B is a comparator, and this circuit is by given sinusoidal signal and resistance R
1, R
2R
nThe comparison of each point voltage on the voltage divider of forming, and the positive and negative state of sinusoidal signal are handled by comparator, provide switching tube P
21, N
22, N
23N
2n, N
2, n+1, and N
aAnd P
bAppropriate drive signal, just can produce as shown in Figure 3 near sinusoidal staircase waveform, the G among the figure
a, G
b, G
2, G
3, G
4, G
n, G
N+1Be connected to the N among Fig. 4 (a) respectively
a, P
b, N
22Or N
2n, N
23Or N
2, n-1, N
24Or N
2, n-2, N
22Or N
2n, P
21Or N
2, n+1Grid.
With circuit shown in Figure 4, under as next group parameter, the output voltage waveforms 50HZ sine ladder wave that is obtained as shown in Figure 6.This group parameter is:
C
1＝C
2＝…＝C
n＝4700μf，25v;
P
11：SMP8P20;
P
b，P
21：SMP4P20;
N
11′，N
12，N
12′，…，N
1n，N
1n′：MTP8N20;
N
22，N
23，…，N
2n，N
2，n+1，N
a：MTP4N20;
D
11，D
11′，D
12，D
12′，…，D
1n，D
1n′：CM-90;
D
a，D
b，D
21，D
221，D
222，D
223，D
224，…
，D
2n1，D
2n2，D
2n3，D
2n4，D
2，n+1：IN4004;
The V=12v direct current.
Fig. 5 is contour structures product figure, and wherein 3 is the base plate installation diagram, and 4 is panel figure, and 5 is main electric elements installation diagram on the base plate.
When discharge switch was in full-gear and positive and negative polarity switch dead short circuit, this inverter can be as direct current _ DC converter, as shown in Figure 7, and the C among the figure
1=C
2=...=C
n=C.The DC converter output voltage, the relational expression of transducer effciency and charge frequency is:
In the formula:
T
S=1/ (f
s), f
sBe switching frequency, T is a switch periods, τ=(R
LC')/(n-1) V
gBe input direct voltage, V
oBe output dc voltage, n is the electric capacity number.
Example: work as n=8, following formula (V
o)/(V
g) to (τ
sOne group of data that)/(τ) changes are as follows:
(τ
s)/(τ) 0.001 0.021 0.041 0.061 0.081 0.101 0.121
(Vo)/(Vg) 7.968 7.380 6.872 6.429 6.040 5.695 5.386
0.141 0.161 0.181 0.201 0.221 0.241
5.110 4.860 4.633 4.426 4.237 4.063
In the formula: η is the efficient of converter, and the implication of other symbols is identical with (1) formula.
Example: when n=8, η is as follows to the one group of data that changes in the following formula:
(τ
s)/(τ) 0.001 0.021 0.041 6.429 6.040 0.101 0.121
(V
o)/(V
g) 0.996 0.923 0.859 0.804 0.755 0.712 0.674
0.141 0.161 0.181 0.201 0.221 0.241
0.640 0.609 0.581 0.555 0.532 0.510
Claims (2)
1, a kind of high-frequency switch capacity type inverter is made up of capacitor and switch, it is characterized in that: switch is made up of charge switch and discharge switch, and the connected mode of the capacitor of high-frequency switch capacity type inverter is: capacitor (c
1), (c
2) ..., (c
n) be in series in order, the connected mode of the charge switch of high-frequency switch capacity type inverter is: at the two ends up and down of each capacitor respectively with double-pole single throw (s
' 1), (s
' 2) ..., (s
' n) a side be connected, then another upper end then of above-mentioned switch is all linked together, as an input, the lower end of above-mentioned switch the same side is all linked together as another input.The connected mode of the discharge switch of high-frequency switch capacity type inverter is: capacitor (c
1) the upper end, (c
1) and (c
2) tie point, (c
2) and (c
3) tie point ..., (c
N-1) and (c
n) tie point and (c
n) the lower end respectively with single-pole single-throw switch (SPST) (S
1), (S
2), (S
3) ..., (S
n) and (S
N+1) an end be connected, and the other end of above-mentioned each switch is connected together, as an output, capacitor (c
1) upper end and capacitor (c
n) the lower end respectively with single-pole single-throw switch (SPST) (S
b) and (S
a) an end be connected, the other end of these two switches links together as another output.
2, high-frequency switch capacity type inverter as claimed in claim 1 is characterized in that: charge switch and discharge switch can be made of field effect transistor or transistor or electron tube or controllable silicon and gate turn off thyristor (GTO):
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104016 CN1022529C (en) | 1990-06-06 | 1990-06-06 | High-frequency switch capacity type inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104016 CN1022529C (en) | 1990-06-06 | 1990-06-06 | High-frequency switch capacity type inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057133A CN1057133A (en) | 1991-12-18 |
| CN1022529C true CN1022529C (en) | 1993-10-20 |
Family
ID=4878349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90104016 Expired - Fee Related CN1022529C (en) | 1990-06-06 | 1990-06-06 | High-frequency switch capacity type inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022529C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4590520B1 (en) * | 2009-09-02 | 2010-12-01 | 日本蓄電器工業株式会社 | AC output power storage device |
| JP5440918B2 (en) | 2009-09-02 | 2014-03-12 | 独立行政法人 宇宙航空研究開発機構 | Power storage device with balance circuit |
| CN112821797B (en) * | 2021-01-06 | 2022-04-26 | 常州大学 | Boost-buck type self-adaptive switch capacitor inverter for circuit breaking |
-
1990
- 1990-06-06 CN CN 90104016 patent/CN1022529C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057133A (en) | 1991-12-18 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |