CN103516219B - The control circuit of DC power supplier - Google Patents
The control circuit of DC power supplier Download PDFInfo
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- CN103516219B CN103516219B CN201210201915.XA CN201210201915A CN103516219B CN 103516219 B CN103516219 B CN 103516219B CN 201210201915 A CN201210201915 A CN 201210201915A CN 103516219 B CN103516219 B CN 103516219B
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Abstract
The present invention proposes a kind of control circuit, and its direct current output for being used to control single phase poaer supply module, wherein the single-phase DC power module direct current output are in parallel with least another single-phase DC power module, and the control circuit includes：Voltage stabilizing flow equalizing ring, is configured to opening time or open frequency by the feedback control single phase poaer supply module breaker in middle power supply to stablize the output voltage and balanced its output current of the direct current output；Ripple Suppression ring, it is configured on the Signal averaging corresponding with the output current for detecting to the feedback control signal in the voltage stabilizing flow equalizing ring with negative feedback mode, wherein the feedback control signal in the voltage stabilizing flow equalizing ring is used to control opening time or the open frequency of the Switching Power Supply.
Description
Technical field
This patent disclosure relates generally to DC power supplier, more particularly to the DC power supplier that parallel way is run.
Background technology
DC power system is suitable to provide DC power supply to some power devices for needing uninterrupted power source, and these are needed
Want the power device of uninterrupted power source for example including be arranged on as in the special entity such as power plant, transformer station be used as control,
The electrical equipment of communication, automatic protection, emergency lighting etc..
At present, common DC power system is generally by carrying out to Three-phase alternating current signal AC/DC and become to bring
To direct current output.Fig. 1 schematically illustrates a kind of common three-phase dc power module.This power module can use three
The exchange input of the line of phase four, and three-phase current Parallel opertation is taken, thus without phase sequence requirement, without current in middle wire loss etc..Specifically,
As shown in figure 1, three-phase dc power module includes the single-phase DC electricity for being converted for each single phase ac electric signal respectively
Source module.Each single-phase DC power module is further included：AC/ for single-phase alternating current to be converted to middle dc voltage
DC conversion modules（The module can carry power factor emendation function（PFC）, such as PFC_A ~ PFC_C modules shown in Fig. 1）；For
The middle dc voltage is converted to the DC/DC conversion modules of required direct current output（Such as DC/DC_A ~ DC/DC_C in Fig. 1
Module）.The last direct current output all the way to be formed and be ultimately sent on bus that is connected in parallel of the direct current output of thus obtained three-phase
Vout.Here, three-phase dc output can be connected in parallel to each other using various ways.A kind of exemplary mode is as shown in Figure 1 every
One diode of series connection on individual single-phase DC outlet line, so as to realize three-phase dc output-parallel.Or, the diode also may be used
To be substituted by FET.
The mode of three-phase dc Parallel opertation is taken due to this three-phase dc power module shown in Fig. 1, therefore often
The output of the DC/DC modules in individual single-phase DC power supply not only needs to be stabilized to a predetermined output voltage Vo_set, also
Realize the sharing control between three single-phase DC power modules, i.e. so that sharing almost equal per phase DC power supplier
Electric current, to ensure the distributing equilibrium of current stress and thermal stress between the three-phase being connected in parallel to each other.
Fig. 2 schematically illustrates the topological structure of the single-phase DC/DC modules with voltage stabilizing sharing control ring 100 in Fig. 1.
As shown in Fig. 2 in this DC/DC module, Switching Power Supply 10 receives the output from such as PFC_A in Fig. 1.Switching Power Supply 10
Output feeding transformer 20, and DC voltage required in bus is transformed to by transformer 20.The DC voltage is further through whole
Stream filter unit 30 forms output to the direct current output Out in bus after processing.The reasons such as the change due to load, the direct current is defeated
Go out the output voltage Vout and its output current Iout of Out it may happen that fluctuation.In order that obtaining the output voltage Vout stable
In scheduled voltage Vo_set and sharing control as described above is realized, the DC/DC power modules in Fig. 2 are further equipped with one
Voltage stabilizing sharing control ring 100（Hereinafter referred to as voltage stabilizing flow equalizing ring）.The voltage stabilizing flow equalizing ring 100 is configured to by feedback control Fig. 2
Switching Power Supply 10 opening time or open frequency realize to the voltage stabilizing of direct current output Out and flow.Fig. 2 is also exemplary to be given
A kind of configuration mode of voltage stabilizing flow equalizing ring is gone out.Specifically, the sampling direct current of voltage sampling circuit 110 in voltage stabilizing flow equalizing ring 100
The output voltage Vout of Out is exported, and is sent to comparison circuit 120.In comparison circuit 120, the output voltage of sampling
Vout is compared with a reference voltage Vref, and the reference voltage Vref is the desired output voltage Vo_set for voltage stabilizing control
With the regulation voltage Vo_adj sums for sharing control.The output voltage Vout and reference voltage of comparison circuit output sampling
Voltage difference between Vref, and as feedback control signal Ctrl export to as switching power source control circuit for example
One pulse-width modulation circuit（PWM）130, its opening time for being used for controlling switch power supply 10 or open frequency.Thus described in Fig. 2
Voltage stabilizing flow equalizing ring can to cause that not only there is burning voltage can also reach for the direct current output of single-phase DC power module desired
Equal flow valuve.
However, due to the AC compounent for also having part low frequency in direct current output, it is defeated in direct current when output voltage is higher
Go out to hold Out that larger ripple current occurs.For example, for when output voltage is about tens volts, the frequency of ripple current
Rate can reach about 100Hz, and ripple current peak-to-peak value is 4.3A or so, and oscillation amplitude is about the 54% of output-current rating.
The content of the invention
It is an object of the present invention to propose a kind of new control circuit for single-phase DC power supply, it can be more
Effectively suppress the ripple in direct current output.A further object of the present invention is to realize that ripple presses down using simple circuit
System, and available circuit design is influenceed in minimum degree.
To achieve the above object, the present invention proposes a kind of control circuit, its direct current for being used to control single phase poaer supply module
Output, wherein the single-phase DC power module direct current output is in parallel with least another single-phase DC power module, control electricity
Road includes：Voltage stabilizing flow equalizing ring, is configured to the opening time by the feedback control single phase poaer supply module breaker in middle power supply or unlatching
Frequency stablizes the output voltage and balanced its output current of the direct current output；Ripple Suppression ring, is configured to negative-feedback side
Formula by the Signal averaging corresponding with the output current for detecting to the feedback control signal in the voltage stabilizing flow equalizing ring,
Feedback control signal in wherein described voltage stabilizing flow equalizing ring is used to control opening time or the open frequency of the Switching Power Supply.
Preferably, the Ripple Suppression ring includes：Current sampling circuit, for the output electricity of the direct current output of sampling
Stream；Supercircuit, for signal corresponding with the output current sampled out and the feedback control signal to be reversely superimposed, superposition
Feedback control signal afterwards is used to control opening time or the open frequency of the single phase poaer supply module breaker in middle power supply.It is more excellent
Selection of land, the Ripple Suppression ring also includes：First gain circuitry, samples for amplifying the current sampling circuit with predetermined ratio
The output current for going out；The supercircuit, for calculating the feedback control signal in the voltage stabilizing flow equalizing ring and the electricity
Difference between the output of flow enhancement circuit, the difference is used as the feedback control signal after the superposition.
In one embodiment of the invention, the voltage stabilizing flow equalizing ring includes：Voltage sampling circuit is described straight for sampling
Flow the output voltage of output；Comparison circuit, for the output voltage sampled out to be compared with a preset reference voltage, gained
The voltage difference therebetween for arriving, for forming the feedback control signal, wherein the preset reference voltage is desired
Burning voltage and the regulation voltage sum for flowing；Switching power source control circuit, for the feedback control letter in response to being input into
Number and adjust opening time or the open frequency of Switching Power Supply.Preferably, the voltage stabilizing flow equalizing ring also includes：Proportional integral electricity
Road, for carrying out proportional integral to the voltage difference that the comparison circuit is exported（PI）Computing, resulting proportional integral value is used
In the formation feedback control signal.It is further preferable that the voltage stabilizing flow equalizing ring also includes：Second gain circuitry, for by pre-
Determine the feedback control signal after the superposition is amplified in gain.In the embodiment that the present invention is enumerated, the Switching Power Supply control electricity
Road is pulse-width modulation circuit, in response to the feedback control signal after the superposition, modulating for controlling switch power drives
Pulse frequency and/or pulse width.
Because in the present invention, the control circuit part of single-phase DC power module is in addition to voltage stabilizing sharing control loop
A Ripple Suppression loop is increased, i.e., the feedforward of output current, thus single-phase DC power supply are added in the middle of voltage stabilizing flow equalizing ring
Module can have dynamic droop characteristic faster.Simultaneously as the preceding feed point of output current is superimposed upon in Ripple Suppression loop
The feedback control signal of voltage stabilizing sharing control ring, such as in the output of proportional integral circuit, so to the defeated of DC power supplier
Going out load regulation does not have any influence.Thus, Ripple Suppression ring can effectively optimize the current output characteristics after stream,
That is, having reached reduces the effect of low-frequency current ripple.Further it is proposed that circuit in Ripple Suppression loop control can increase
Onto any kind of existing voltage stabilizing sharing control ring, and without excessively being changed to available circuit, therefore structure of the present invention
Simply, it is easy to transplanting, and may apply to the flow-optimized application between module and module, and is not limited to the embodiment of the present invention
Given in the three-phase dc power module that goes out.
Brief description of the drawings
The purpose of the present invention, feature, feature and advantage will become more to show by the detailed description below in conjunction with accompanying drawing and
It is clear to.Wherein：
Fig. 1 shows the structural representation of existing three-phase dc power module；
Fig. 2 shows the schematic diagram of the DC/DC modules in the existing single-phase DC power supply with voltage stabilizing sharing control ring；
Fig. 3 shows the single-phase DC power control circuit with Ripple Suppression ring according to an embodiment of the invention.
Specific embodiment
Below with reference to Description of Drawings each embodiment of the invention.By following description, above-mentioned advantage of the invention will
May be understood more readily.
The appearance of ripple is main reason is that the voltage stabilizing sharing control loop of existing DC power supplier exists in direct current output
The gain of low frequency part is relatively low, such as the gain at 100Hz is close to zero.This causes voltage stabilizing sharing control ring for 100Hz
The rejection ability reduction of the ripple of left and right.The output area for being additionally, since DC power supplier is larger, and loading range is wide, thus
If it is pure it is broken ripple problem is solved by voltage stabilizing sharing control ring, and ensure that the control loop in whole working range is special simultaneously
Property reaches desired requirement, then with certain difficulty.In consideration of it, the present invention is proposed in the voltage stabilizing sharing control shown in Fig. 2
Increase a Ripple Suppression loop outside loop, i.e., the feedforward of output current is added in the middle of voltage stabilizing flow equalizing ring, so that single-phase straight
Stream power module has dynamic droop characteristic faster.Simultaneously as the preceding feed point of output current is superimposed in Ripple Suppression loop
Feedback control signal Ctrl in voltage stabilizing sharing control ring（Its opening time for being used for controlling switch power supply or open frequency）
On, thus the load regulation of the output voltage produced by the DC power supplier with Ripple Suppression ring compares and Traditional DC
Power module is higher.Thus, Ripple Suppression ring can effectively optimize the current output characteristics after stream, i.e. reach reduction low
The effect of frequency current ripples.
Fig. 3 schematically illustrates the single-phase DC electricity with above-mentioned Ripple Suppression ring according to an embodiment of the invention
The control circuit in source.In figure 3, voltage stabilizing flow equalizing ring 100 is configured to by opening time of feedback control switch power supply 10 or opens
Frequency is opened to realize to the voltage stabilizing of direct current output Out and flow.Specifically, in Fig. 3, voltage stabilizing flow equalizing ring 100 includes voltage sample
Circuit 110, comparison circuit 120 and pulse-width modulation circuit（PWM）130.Wherein, voltage sampling circuit 110 is from after rectifying and wave-filtering
DC output end Out at sample actual output voltage Vout.Comparison circuit 120 will sample the output voltage Vout that obtains with
One reference voltage Vref is compared, and using voltage difference Vd therebetween as feedback control signal Ctrl export to
PWM 130.PWM 130 adjusts the pulse width/pulse frequency/shifting of Switching Power Supply 10 in response to feedback control signal Ctrl
Phase angle.
In the example shown in Fig. 3, for voltage stabilizing and flow, reference voltage Vref is the predetermined voltage Vo_ for voltage stabilizing
Set and the regulation voltage Vo_adj sums for realizing flowing.Wherein, stream regulation voltage Vo_adj can be that basis flows plan
Slightly pass through DSP（Digital Signal Processing means）The regulation voltage obtained after treatment, the purpose is to cause that such as Fig. 1 plants shown three
The electric current of phase direct current output is balanced against others.However, it will be appreciated by persons skilled in the art that voltage stabilizing flow equalizing ring can also have many
Plant other implementations.Such as, current equalizing method can be using droop method, active current-equalizing method etc., wherein active current-equalizing method may be used again
With including maximum current method（Also referred to as democracy current-equalizing method）, average current model, various equal Flow Policies such as principal and subordinate's current-equalizing method.These
Current equalizing method and strategy can be used to replace the voltage stabilizing flow equalizing ring shown in Fig. 3.Additionally, the voltage stabilizing flow equalizing ring shown in Fig. 3 also
Can be configured to include the various different control structures of regulation loop and flow equalizing ring.For example, voltage stabilizing flow equalizing ring can be configured to flow
The feedback control signal of ring and the mode of the bicyclic adjustment of regulation loop, i.e. regulation loop output is superimposed with the feedback control signal of flow equalizing ring
Latter is used to control PWM together.These changes, are equally to those skilled in the art obvious.
Furthermore, in the example that Fig. 3 is given, the voltage difference Vd of the output of comparison circuit 120 preferably sends into a ratio
Example integration（PI）Circuit 140, proportional integral value Vint is obtained to be integrated to voltage change, prevents from being mutated in short-term the mistake for causing
Mistuning section.At this moment, proportional integral value Vint is that can be used as feedback control signal Ctrl.Additionally, in the examples that are given of Fig. 3, voltage stabilizing
Flow equalizing ring 100 also includes a gain circuitry 150, and it is used to send into PWM after amplifying from the output of proportional integral circuit 140
130.The gain of whole voltage stabilizing flow equalizing ring will determine the loop characteristics of the control ring.Those skilled in the art can be according to actual need
Adjust the gain size of each circuit in voltage stabilizing flow equalizing ring.
The control circuit part of the Unidirectional direct-current power supply in Fig. 3 also includes a ripple in addition to voltage stabilizing flow equalizing ring 100
Suppress ring 200.Ripple Suppression ring 200 at least includes a current sampling circuit 210 and a supercircuit 220.Current sample
Circuit 210 is used to sample the output current Iout of the single-phase DC/DC modules output end.Supercircuit 220 is used to adopt
The output current Iout that sample goes out is added in voltage stabilizing flow equalizing ring 100 for the feedback control for controlling PWM 130 in the way of negative-feedback
On signal Ctrl processed.Preferably, Ripple Suppression ring 200 can also include a gain circuitry 230, for the output to sampling out
Electric current Iout is amplified, and the output current after amplification is sent into supercircuit 220.
Specifically, for example, as shown in figure 3, supercircuit 220 is a reverse supercircuit, i.e. will be from proportional integral
The proportional integral value Vint as the feedback control signal in voltage stabilizing flow equalizing ring of circuit 140 with amplify after sampled current signals
Both Iout are made the difference, and gained difference is exported to PWM 130 as the feedback control signal Ctrl+ after superposition.So, in figure 3,
If the output current Iout for sampling increases because of the presence of ripple, Ripple Suppression ring 200 is electric by the increased output
Stream feeds back to supercircuit 220, and subtracts the output current from the integrated value Vint of the output of proportional integral circuit 140, so that
Obtain through current compensation（Or superposition）Feedback control signal Ctrl+ afterwards.Thus, PWM 130 will accordingly adjust Switching Power Supply
Pulse frequency or width, to suppress the current ripples by reducing output voltage to a certain extent.
More efficiently can realize optimizing the mesh for flowing using the control circuit with Ripple Suppression ring shown in Fig. 3
's.Equally in the case where output voltage is such as tens volts, before the current oscillation amplitude at 100Hz can be decayed to
6.5%, and the peak-to-peak value of maximum current ripple can also be reduced to 0.68A, oscillation amplitude is the 8% of output-current rating, in can connect
In the zone of reasonableness received.
The particular circuit configurations of the shown Ripple Suppression rings 200 of Fig. 3 can equally have various implementations.Such as, should
Current sampling circuit can be using the amplifier circuit being made up of amplifier, it would however also be possible to employ the element such as resistance, triode is built
Amplifier circuit.These changes are equally to those skilled in the art obvious.Additionally, according to actual need
Other auxiliary circuits can also be added in Ripple Suppression ring 200.
In addition, though Fig. 1-3 in this manual is to describe the present invention by taking three-phase dc power module as an example, but
Be it will be appreciated by persons skilled in the art that the above-mentioned control circuit with Ripple Suppression ring can be applied in other modules and
Between module（For example between two or more modules）Current share scheme in, and be not limited to three-phase dc power module.
Additionally, the structure of above-described control circuit is exemplary.According to actual needs, included by control circuit
Each circuit can merge or split into different circuits, it is also possible to be integrated in a circuit.This point is for this area
It is obvious for technical staff.
It will be appreciated by those skilled in the art that each embodiment disclosed above can be in the feelings without departing from invention essence
Various changes and modifications are made under condition, these change and modification should all fall within the scope and spirit of the invention.Therefore, this hair
Bright protection domain should be defined by the appended claims.
Claims (4)
1. it is a kind of to control circuit, the wherein direct current output (Out) for controlling single phase poaer supply module, the single-phase DC power module
Direct current output is in parallel with least another single-phase DC power module, and the control circuit includes：
Voltage stabilizing flow equalizing ring (100), is configured to by opening time of the feedback control single phase poaer supply module breaker in middle power supply or opens
Open frequency to stablize the output voltage (Vout) and balanced its output current (Iout) of the direct current output (Out), wherein described
Switching Power Supply (10) includes four Metal-Oxide Semiconductor field-effect transistors；
Ripple Suppression ring (200), being configured to will be corresponding with the output current (Iout) for detecting with negative feedback mode
Signal averaging in the feedback control signal (Ctrl) in the voltage stabilizing flow equalizing ring (100), wherein the voltage stabilizing flow equalizing ring (100)
In feedback control signal (Ctrl) be used to control opening time or the open frequency of the Switching Power Supply；
Wherein, the voltage stabilizing flow equalizing ring (100) includes：
Voltage sampling circuit (110), for the output voltage (Vout) of the direct current output (Out) that sample；
Comparison circuit (120), for the output voltage sampled out (Iout) to be compared with a preset reference voltage (Vref),
Resulting voltage difference (Vd) therebetween is used to form the feedback control signal (Ctrl), wherein the predetermined reference
Voltage (Vref) is desired burning voltage (Vo_set) and regulation voltage (Vo_adj) sum for flowing；
Switching power source control circuit (130), during for adjusting the unlatching of Switching Power Supply in response to the feedback control signal being input into
Between or open frequency；
Proportional integral circuit (140), for carrying out proportional integral fortune to the voltage difference (Vd) that the comparison circuit (120) is exported
Calculate, resulting proportional integral value (Vint) is used to form the feedback control signal (Ctrl)；
Second gain circuitry (150), for amplifying the feedback control signal (Ctrl+) after the superposition by predetermined gain.
2. it is as claimed in claim 1 to control circuit, wherein, the Ripple Suppression ring (200) includes：
Current sampling circuit (210), for the output current (Iout) of the direct current output (Out) that sample；
Supercircuit (220), for by with the corresponding signal of output current (Iout) sampled out and the feedback control signal
(Ctrl) reversely superposition, the feedback control signal (Ctrl+) after superposition is used to control the single phase poaer supply module breaker in middle power supply
Opening time or open frequency.
3. it is as claimed in claim 2 to control circuit, wherein, the Ripple Suppression ring (200) also includes：
First gain circuitry (230), for amplifying the output current that the current sampling circuit (210) is sampled out with predetermined ratio
(Iout)；
The supercircuit (220), for calculate the feedback control signal (Ctrl) in the voltage stabilizing flow equalizing ring with it is described
Difference between the output of the first gain circuitry (230), the difference is used as the feedback control signal (Ctrl after the superposition
+)。
4. it is as claimed in claim 1 to control circuit, wherein, the switching power source control circuit is pulse-width modulation circuit (130),
For in response to the feedback control signal (Ctrl+) after the superposition, modulating the pulse frequency for controlling switch power drives
And/or pulse width.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210201915.XA CN103516219B (en) | 2012-06-15 | 2012-06-15 | The control circuit of DC power supplier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201915.XA CN103516219B (en) | 2012-06-15 | 2012-06-15 | The control circuit of DC power supplier |
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| CN103516219B true CN103516219B (en) | 2017-06-30 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904883B (en) * | 2014-03-28 | 2017-02-01 | 哈尔滨工程大学 | Load distribution control method and device for parallel direct current switch power supply |
| CN104079152B (en) * | 2014-07-17 | 2016-07-06 | 深圳威迈斯电源有限公司 | Working frequency ripple wave suppressing method and device thereof for LLC changer |
| CN104600978A (en) * | 2015-01-13 | 2015-05-06 | 艾德克斯电子（南京）有限公司 | Parallel current-sharing device and control method of bus without current sharing |
| CN105425889B (en) * | 2015-11-09 | 2017-07-04 | 华北电力大学（保定） | A kind of high precision voltage stabilization and current stabilization control circuit based on the pre- steady level of high frequency electric source |
| CN105530728B (en) * | 2016-02-24 | 2017-06-16 | 西南交通大学 | A kind of bus current synchronous mode time-sharing multiplex multiple constant current output LED driver topology and its control method |
| CN107735933A (en) * | 2017-03-02 | 2018-02-23 | 香港应用科技研究院有限公司 | Current equalization circuit for DC DC converters |
| CN107612389B (en) * | 2017-10-09 | 2020-05-29 | 天津电气科学研究院有限公司 | High-frequency switching power supply parallel current-sharing control method based on average current feedforward |
| CN108762158A (en) * | 2018-06-11 | 2018-11-06 | 山东理工大学 | Efficient numerically controlled DC power supply and its test method based on the design of MSP430 microcontrollers |
| CN109361311A (en) * | 2018-10-25 | 2019-02-19 | 武汉精立电子技术有限公司 | A kind of multi-channel dc power supply current sharing control circuit and method |
| CN112928898A (en) * | 2019-12-06 | 2021-06-08 | 中兴通讯股份有限公司 | BUS voltage balance adjusting method of power converter and power converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319536A (en) * | 1991-12-17 | 1994-06-07 | International Business Machines Corporation | Power system for parallel operation of AC/DC convertrs |
| CN1229305A (en) * | 1998-03-12 | 1999-09-22 | 东芝株式会社 | Control device of transducer |
| CN102324852A (en) * | 2011-08-30 | 2012-01-18 | 深圳麦格米特电气股份有限公司 | A kind of heterogeneous misphase parallel connection twin-stage converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3223293B2 (en) * | 1995-02-06 | 2001-10-29 | 三菱電機株式会社 | DC / DC converter |
-
2012
- 2012-06-15 CN CN201210201915.XA patent/CN103516219B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319536A (en) * | 1991-12-17 | 1994-06-07 | International Business Machines Corporation | Power system for parallel operation of AC/DC convertrs |
| CN1229305A (en) * | 1998-03-12 | 1999-09-22 | 东芝株式会社 | Control device of transducer |
| CN102324852A (en) * | 2011-08-30 | 2012-01-18 | 深圳麦格米特电气股份有限公司 | A kind of heterogeneous misphase parallel connection twin-stage converter |
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Effective date of registration: 20180314 Address after: 310018 No. 20, No. 566, Xiasha Economic Development Zone, Hangzhou, Zhejiang Patentee after: ZHEJIANG SHUOWEI NEW ENERGY TECHNOLOGY CO., LTD. Address before: 100102 Beijing, Wangjing, Central South Road, No. 7, No. Patentee before: Simens Co., Ltd. (China) |
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