CN103516219A - A control circuit of a direct current power supply module - Google Patents
A control circuit of a direct current power supply module Download PDFInfo
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Abstract
本发明提出了一种控制电路，其用于控制单相电源模块的直流输出，其中该单相直流电源模块直流输出与至少另一个单相直流电源模块并联，该控制电路包括：稳压均流环，配置成通过反馈控制该单相电源模块中开关电源的开启时间或开启频率来稳定所述直流输出的输出电压并均衡其输出电流；纹波抑制环，配置成以负反馈方式将与检测到的所述输出电流相对应的信号叠加到所述稳压均流环中的反馈控制信号上，其中所述稳压均流环中的反馈控制信号用于控制所述开关电源的开启时间或开启频率。
The present invention proposes a control circuit, which is used to control the DC output of a single-phase DC power module, wherein the DC output of the single-phase DC power module is connected in parallel with at least another single-phase DC power module, and the control circuit includes: voltage stabilization and current sharing loop, configured to stabilize the output voltage of the DC output and balance its output current by feedback controlling the turn-on time or turn-on frequency of the switching power supply in the single-phase power module; The received signal corresponding to the output current is superimposed on the feedback control signal in the voltage stabilizing current sharing loop, wherein the feedback control signal in the voltage stabilizing current sharing loop is used to control the turn-on time or Turn on frequency.
Description
Technical field
The present invention relates in general to DC power supplier, relates in particular to the DC power supplier of parallel way operation.
Background technology
DC power system is suitable for needing the power device of uninterrupted power supply that DC power supply is provided to some, and these need the power device of uninterrupted power supply such as comprising those power consumption equipments as control, communication, protection automatically, emergency lighting etc. that are arranged on as in the special entities such as power plant, transformer station.
At present, common DC power system is generally to convert to obtain direct current and export by the three-phase alternating current signal of telecommunication being carried out to AC/DC.Fig. 1 exemplarily shows a kind of common three-phase dc power module.This power module can adopt three-phase and four-line to exchange input, and takes three-phase current output in parallel, thereby without phase sequence requirement, without current in middle wire loss etc.Particularly, as shown in Figure 1, three-phase dc power module comprises the single-phase DC power module converting for each single phase alternating current (A.C.) signal of telecommunication respectively.Each single-phase DC power module further comprises: for single-phase alternating current being converted to the AC/DC conversion module (this module can be with power factor emendation function (PFC), and example is PFC_A ~ PFC_C module as shown in Figure 1) of middle dc voltage; For example, for this middle dc voltage being converted to the DC/DC conversion module (DC/DC_A ~ DC/DC_C module of Fig. 1) of required direct current output.The direct current output of the three-phase obtaining thus is finally connected in parallel to form and finally delivers to bus Shang mono-road direct current output Vout.Here, three-phase dc output can adopt various ways to be connected in parallel to each other.Mode be the diode of connecting on each single-phase DC outlet line as shown in Figure 1, thereby realize three-phase dc output-parallel.Or this diode also can be substituted by field effect transistor.
Because this three-phase dc power module shown in Fig. 1 has been taked the three-phase dc mode of exporting in parallel, therefore the output of the DC/DC module in each single-phase DC power supply not only needs to be stabilized to a predetermined output voltage V o_set, also to realize three sharing control between single-phase DC power module,, every phase DC power supplier is shared and be close to equal electric current, with the distributing equilibrium of the current stress between the three-phase of guaranteeing to be connected in parallel to each other and thermal stress.
Fig. 2 exemplarily shows in Fig. 1 the topological structure with the single-phase DC/DC module of voltage stabilizing sharing control ring 100.As shown in Figure 2, in this DC/DC module, Switching Power Supply 10 receives from for example output of PFC_A in Fig. 1.Transformer 20 is sent in the output of Switching Power Supply 10, and transforms to direct voltage required in bus by transformer 20.This direct voltage further forms the direct current output Out outputing in bus after rectification filtering unit 30 is processed.Due to the reasons such as variation of load, output voltage V out and its output current Iout of this direct current output Out may fluctuate.In order to make this output voltage V out be stabilized in scheduled voltage Vo_set and to realize sharing control as above, the DC/DC power module in Fig. 2 is also equipped with a voltage stabilizing sharing control ring 100(hereinafter to be referred as voltage stabilizing flow equalizing ring).This voltage stabilizing flow equalizing ring 100 is configured to realize voltage stabilizing and the current-sharing to direct current output Out by the opening time of the Switching Power Supply 10 in FEEDBACK CONTROL Fig. 2 or open frequency.Fig. 2 is the exemplary configuration mode that has provided a kind of voltage stabilizing flow equalizing ring also.Particularly, the output voltage V out of the voltage sampling circuit 110 sampling direct current output Out in voltage stabilizing flow equalizing ring 100, and sent into comparison circuit 120.In comparison circuit 120, the output voltage V out of sampling and a reference voltage Vref compare, and this reference voltage Vref is the desired output voltage Vo_set that controls for voltage stabilizing and for the regulation voltage Vo_adj sum of sharing control.The output voltage V out of comparison circuit output sampling and the voltage difference between reference voltage Vref, and using it as feedback control signal Ctrl, export to for example pulse-width modulation circuit (PWM) 130 as switching power source control circuit, its opening time for control switch power supply 10 or open frequency.Voltage stabilizing flow equalizing ring described in Fig. 2 can be so that the output of the direct current of single-phase DC power module not only has the equal flow valuve that burning voltage can also reach expectation thus.
Yet, owing to also there being the alternating current component of part low frequency in direct current output, when output voltage is higher, at DC output end Out, there will be larger ripple current.For example, be approximately the situation of tens volts for output voltage, the frequency of ripple current can reach about 100Hz, and ripple current peak-to-peak value is about 4.3A, and oscillation amplitude is output-current rating about 54%.
Summary of the invention
One object of the present invention is to propose a kind of new control circuit for single-phase DC power supply, and it can more efficiently suppress the ripple in direct current output.Another object of the present invention is to utilize simple circuit to realize Ripple Suppression, and in minimum degree, affects available circuit design.
For achieving the above object, the present invention proposes a kind of control circuit, it is for controlling the direct current output of single phase poaer supply module, wherein this single-phase DC power module direct current output is with at least another single-phase DC power module is in parallel, this control circuit comprises: voltage stabilizing flow equalizing ring, is configured to output voltage balanced its output current of by opening time or the open frequency of Switching Power Supply in this single phase poaer supply module of FEEDBACK CONTROL, stablizing described direct current output; Ripple Suppression ring, in the feedback control signal that is configured to negative feedback mode, the corresponding signal of the described output current with detecting is added in described voltage stabilizing flow equalizing ring, the feedback control signal in wherein said voltage stabilizing flow equalizing ring is for controlling opening time or the open frequency of described Switching Power Supply.
Preferably, described Ripple Suppression ring comprises: current sampling circuit, for the output current of the described direct current output of sampling; Supercircuit, for corresponding signal and the described feedback control signal of the output current with sampling out oppositely superposeed, the feedback control signal after stack is for controlling opening time or the open frequency of described single phase poaer supply module Switching Power Supply.More preferably, described Ripple Suppression ring also comprises: the first gain circuitry, for amplify the output current that described current sampling circuit is sampled out with predetermined ratio; Described supercircuit, for calculating the difference between the described feedback control signal of described voltage stabilizing flow equalizing ring and the output of described current gain circuit, the feedback control signal of described difference after as described stack.
In one embodiment of the invention, described voltage stabilizing flow equalizing ring comprises: voltage sampling circuit, for the output voltage of the described direct current output of sampling; Comparison circuit, for the output voltage of sampling out and a preset reference voltage are compared, resulting voltage difference between the two, is used to form described feedback control signal, the burning voltage that wherein said preset reference voltage is expectation and the regulation voltage sum for current-sharing; Switching power source control circuit, adjusts opening time or the open frequency of Switching Power Supply for the feedback control signal in response to input.Preferably, described voltage stabilizing flow equalizing ring also comprises: proportional integral circuit, for the voltage difference of described comparison circuit output is carried out to proportional integral (PI) computing, resulting proportional integral value is used to form described feedback control signal.More preferably, described voltage stabilizing flow equalizing ring also comprises: the second gain circuitry, and for amplify the feedback control signal after described stack by predetermined gain.In the embodiment exemplifying in the present invention, described switching power source control circuit is pulse-width modulation circuit, and for the feedback control signal in response to after described stack, modulation is for pulse frequency and/or the pulse duration of control switch power drives.
Due in the present invention, the control circuit part of single-phase DC power module has increased a Ripple Suppression loop except voltage stabilizing sharing control loop, in the middle of voltage stabilizing flow equalizing ring, add the feedforward of output current, thereby single-phase DC power module can have faster dynamically droop characteristic.Meanwhile, because the feedforward point of output current in Ripple Suppression loop is superimposed upon the feedback control signal of voltage stabilizing sharing control ring, for example, in the output of proportional integral circuit, thus on the output loading regulation of DC power supplier without any impact.Thus, Ripple Suppression ring can be optimized the electric current output characteristic after current-sharing effectively,, has reached the effect that reduces low-frequency current ripple that is.In addition, in the circuit that the present invention proposes, Ripple Suppression loop is controlled and is risen on the existing voltage stabilizing sharing control ring of any type, and without available circuit is too much changed, therefore the present invention is simple in structure, be convenient to transplant, and can be applied in all flow-optimized application between module and module, and be not limited to three-phase dc power module given in the embodiment of the present invention.
Accompanying drawing explanation
Object of the present invention, feature, feature and advantage will become more apparent by the detailed description below in conjunction with accompanying drawing.Wherein:
Fig. 1 shows the structural representation of existing three-phase dc power module;
Fig. 2 shows the schematic diagram of the DC/DC module in the existing single-phase DC power supply with voltage stabilizing sharing control ring;
Fig. 3 shows the single-phase DC power control circuit according to an embodiment of the invention with Ripple Suppression ring.
Embodiment
Below with reference to accompanying drawing, each embodiment of the present invention is described.By following description, above-mentioned advantage of the present invention will be easier to understand.
In direct current output, the appearance main cause of ripple is that the voltage stabilizing sharing control loop of existing DC power supplier is lower in the gain of low frequency part, and for example the gain at 100Hz place is close to zero.This causes voltage stabilizing sharing control ring to reduce for the inhibition ability of the ripple of 100Hz left and right.And, because the output area of DC power supplier is larger, loading range is wide, if thereby purely brokenly by voltage stabilizing sharing control ring, solve ripple problem, and guarantee that the control loop characteristic in whole working range reaches the requirement of expectation, has certain difficulty simultaneously.Given this, the present invention proposes outside the voltage stabilizing sharing control loop shown in Fig. 2 and increase a Ripple Suppression loop, in the middle of voltage stabilizing flow equalizing ring, add the feedforward of output current, so that single-phase DC power module has faster dynamically droop characteristic.Simultaneously, because the feedforward point of output current in Ripple Suppression loop is superimposed upon its opening time for control switch power supply of feedback control signal Ctrl(or the open frequency in voltage stabilizing sharing control ring), thereby the load regulation with the output voltage that the DC power supplier of Ripple Suppression ring produces is compared with traditional DC power supplier higher.Thus, Ripple Suppression ring can be optimized the electric current output characteristic after current-sharing effectively,, reaches the effect that reduces low-frequency current ripple that is.
Fig. 3 exemplarily shows the control circuit of the single-phase DC power supply according to an embodiment of the invention with above-mentioned Ripple Suppression ring.In Fig. 3, voltage stabilizing flow equalizing ring 100 is configured to realize voltage stabilizing and the current-sharing to direct current output Out by the opening time of FEEDBACK CONTROL Switching Power Supply 10 or open frequency.Particularly, in Fig. 3, voltage stabilizing flow equalizing ring 100 comprises voltage sampling circuit 110, comparison circuit 120 and pulse-width modulation circuit (PWM) 130.Wherein, voltage sampling circuit 110 is from the actual output voltage V out of DC output end Out sampling after rectifying and wave-filtering.The output voltage V out that comparison circuit 120 obtains sampling and a reference voltage Vref compare, and the voltage difference Vd between the two exports to PWM 130 as feedback control signal Ctrl.PWM 130 adjusts the pulse duration/pulse frequency/phase shifting angle of Switching Power Supply 10 in response to this feedback control signal Ctrl.
In the example shown in Fig. 3, for voltage stabilizing and current-sharing, reference voltage Vref is for the predetermined voltage Vo_set of voltage stabilizing with for realizing the regulation voltage Vo_adj sum of current-sharing.Wherein, current-sharing regulation voltage Vo_adj can be by DSP(Digital Signal Processing means according to equal Flow Policies) regulation voltage that obtains after processing, its objective is that the electric current that the three-phase dc shown in planting of Fig. 1 is for example exported is balanced against others.Yet, it will be appreciated by persons skilled in the art that voltage stabilizing flow equalizing ring can also have multiple other implementation.Such as, current equalizing method can adopt droop method, active current-equalizing method etc., and wherein active current-equalizing method can comprise again the multiple equal Flow Policies such as maximum current method (being also referred to as democracy current-equalizing method), average current method, principal and subordinate's current-equalizing method.These current equalizing methods and strategy all can be used for replacing the voltage stabilizing flow equalizing ring shown in Fig. 3.In addition, the voltage stabilizing flow equalizing ring shown in Fig. 3 also can also be configured to comprise the multiple different control structures of regulation loop and flow equalizing ring.For example, voltage stabilizing flow equalizing ring can be configured to the mode of flow equalizing ring and the adjustment of regulation loop dicyclo, i.e. after the feedback control signal of regulation loop output and the feedback control signal of flow equalizing ring are superimposed, one is used from control PWM.These change, and are apparent to those skilled in the art equally.
Moreover in the example providing at Fig. 3, the voltage difference Vd of comparison circuit 120 outputs also preferably sends into a proportional integral (PI) circuit 140, obtains proportional integral value Vint so that change in voltage is carried out to integration, the mistake that preventing suddenlys change in short-term causes regulates.At this moment, proportional integral value Vint can be used as feedback control signal Ctrl.In addition, in the example that Fig. 3 provides, voltage stabilizing flow equalizing ring 100 also comprises a gain circuitry 150, and it sends into PWM 130 after the output from proportional integral circuit 140 is amplified.The gain of whole voltage stabilizing flow equalizing ring will determine the loop characteristics of this control ring.Those skilled in the art can adjust the gain size of each circuit in voltage stabilizing flow equalizing ring according to actual needs.
The control circuit part of the Unidirectional direct-current power supply in Fig. 3 also comprises a Ripple Suppression ring 200 except voltage stabilizing flow equalizing ring 100.Ripple Suppression ring 200 at least comprises a current sampling circuit 210 and a supercircuit 220.Current sampling circuit 210 is for sampling to the output current Iout of this single-phase DC/DC module output.Supercircuit 220 is for being added to voltage stabilizing flow equalizing ring 100 for controlling the feedback control signal Ctrl of PWM 130 by the output current Iout sampling out in degenerative mode.Preferably, Ripple Suppression ring 200 can also comprise a gain circuitry 230, amplifies, and the output current after amplifying is sent into supercircuit 220 for the output current Iout to sampling out.
Particularly, for example, as shown in Figure 3, supercircuit 220 is a reverse supercircuit,, by the proportional integral value Vint as the feedback control signal in voltage stabilizing flow equalizing ring from proportional integral circuit 140 with amplify after sample rate current signal Iout the two do poorly, the feedback control signal Ctrl+ of gained difference after as stack exports to PWM 130.Like this, in Fig. 3, when if the output current Iout sampling increases because of the existence of ripple, Ripple Suppression ring 200 feeds back to supercircuit 220 by the output current of this increase, and deduct this output current from the integrated value Vint of proportional integral circuit 140 outputs, thereby obtain the feedback control signal Ctrl+ after current compensation (or stack).Thus, PWM 130 is by the pulse frequency of corresponding adjustment Switching Power Supply or width, to suppress this current ripples by reducing output voltage to a certain extent.
Adopt the control circuit with Ripple Suppression ring shown in Fig. 3 can more efficiently realize the object of optimizing current-sharing.Equally at output voltage for for example tens volts in the situation that, before the current oscillation amplitude at 100Hz place can decay to 6.5%, and the peak-to-peak value of maximum current ripple also can be reduced to 0.68A, oscillation amplitude is output-current rating 8%, in acceptable zone of reasonableness.
The particular circuit configurations of Fig. 3 is shown Ripple Suppression ring 200 can have multiple implementation equally.Such as, this current sampling circuit can adopt the amplifier circuit consisting of amplifier, the amplifier circuit that also can adopt the elements such as resistance, triode to build.These variations are apparent to those skilled in the art equally.In addition, in Ripple Suppression ring 200, can also add other auxiliary circuits according to actual needs.
In addition, although Fig. 1-3 are in this manual all to take three-phase dc power module to describe the present invention as example, but it will be understood by those skilled in the art that, the above-mentioned control circuit with Ripple Suppression ring can also be applied in the current-sharing scheme of (for example, between two or more modules) between other modules and module, and is not limited to three-phase dc power module.
In addition, the structure of above-described control circuit is exemplary.According to actual needs, each included circuit of control circuit can merge or split into different circuit, also can be integrated in a circuit.This point is apparent to those skilled in the art.
These changes and modification it will be appreciated by those skilled in the art that disclosed each embodiment can make various changes and modification in the situation that not departing from invention essence above, within all should drop on protection scope of the present invention.Therefore, protection scope of the present invention should be limited by appending claims.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904883A (en) * | 2014-03-28 | 2014-07-02 | 哈尔滨工程大学 | Load distribution control method and device for parallel direct current switch power supply |
| CN104079152A (en) * | 2014-07-17 | 2014-10-01 | 深圳威迈斯电源有限公司 | Power frequency ripple suppression method and device for LLC converter |
| CN105425889A (en) * | 2015-11-09 | 2016-03-23 | 华北电力大学（保定） | High-precision voltage and current stability control circuit based on high-frequency power supply pre-regulation level |
| CN105530728A (en) * | 2016-02-24 | 2016-04-27 | 西南交通大学 | A bus current synchronous time-division multiplexing multi-channel constant current output LED driver topology and its control method |
| WO2016112747A1 (en) * | 2015-01-13 | 2016-07-21 | 艾德克斯电子（南京）有限公司 | Parallel current-sharing device and control method of bus without current sharing |
| CN107612389A (en) * | 2017-10-09 | 2018-01-19 | 天津电气科学研究院有限公司 | A kind of high frequency switch power current sharing control method based on average current feedforward |
| 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 converter |
| 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 |
| WO2021110172A1 (en) * | 2019-12-06 | 2021-06-10 | 中兴通讯股份有限公司 | Method for balancing regulation of bus voltage for power converter, and power converter, storage medium and electronic apparatus |
Citations (4)
| 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 |
| JPH08214543A (en) * | 1995-02-06 | 1996-08-20 | Mitsubishi Electric Corp | Dc-dc converter and controlling method therefor |
| 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 |
-
2012
- 2012-06-15 CN CN201210201915.XA patent/CN103516219B/en active Active
Patent Citations (4)
| 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 |
| JPH08214543A (en) * | 1995-02-06 | 1996-08-20 | Mitsubishi Electric Corp | Dc-dc converter and controlling method therefor |
| 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 |
Cited By (13)
| 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 |
| CN103904883A (en) * | 2014-03-28 | 2014-07-02 | 哈尔滨工程大学 | Load distribution control method and device for parallel direct current switch power supply |
| CN104079152A (en) * | 2014-07-17 | 2014-10-01 | 深圳威迈斯电源有限公司 | Power frequency ripple suppression method and device for LLC converter |
| 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 |
| WO2016112747A1 (en) * | 2015-01-13 | 2016-07-21 | 艾德克斯电子（南京）有限公司 | Parallel current-sharing device and control method of bus without current sharing |
| CN105425889A (en) * | 2015-11-09 | 2016-03-23 | 华北电力大学（保定） | High-precision voltage and current stability control circuit based on high-frequency power supply pre-regulation level |
| CN105530728A (en) * | 2016-02-24 | 2016-04-27 | 西南交通大学 | A bus current synchronous time-division multiplexing multi-channel 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 converter |
| CN107612389A (en) * | 2017-10-09 | 2018-01-19 | 天津电气科学研究院有限公司 | A kind of high frequency switch power current sharing control method based on average current feedforward |
| 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 |
| WO2021110172A1 (en) * | 2019-12-06 | 2021-06-10 | 中兴通讯股份有限公司 | Method for balancing regulation of bus voltage for power converter, and power converter, storage medium and electronic apparatus |
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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) |