CN111106613B - Uninterruptible power supply system with energy storage scheduling function and control method of DC-DC module - Google Patents
Uninterruptible power supply system with energy storage scheduling function and control method of DC-DC module Download PDFInfo
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- CN111106613B CN111106613B CN201911319849.4A CN201911319849A CN111106613B CN 111106613 B CN111106613 B CN 111106613B CN 201911319849 A CN201911319849 A CN 201911319849A CN 111106613 B CN111106613 B CN 111106613B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses an uninterruptible power supply system with an energy storage scheduling function and a control method of a DC-DC module, which comprises an AC-DC module, a DC-DC module and a DC-AC module, and is characterized in that: the AC-DC module, the bidirectional DC-DC module and the DC-AC module adopt a three-phase T-shaped three-level topological structure, the input end of the AC-DC module is connected with a mains supply end, the output end of the DC-AC module is connected with a load, and the bidirectional DC-DC module is connected with the energy storage battery pack. The invention has the beneficial effects that: the problem of traditional uninterrupted power source energy storage battery pack float for a long time and fill the low utilization ratio is solved, through reasonable charge-discharge, improve energy storage battery pack activity, extension energy storage battery pack life-span. In addition, at the peak electricity price moment of the power grid, the output electric energy of the energy storage battery pack is improved to save the energy used by the commercial power, the energy storage battery pack is charged at the low-valley electricity price moment of the power grid, and the economy of the uninterruptible power supply system is improved by obtaining the peak-valley electricity price difference.
Description
Technical Field
The invention relates to the field of energy storage converters, in particular to an uninterruptible power supply system with an energy storage scheduling function and a control method of a DC-DC module.
Background
The uninterruptible power supply system is widely applied to industrial occasions such as data centers, airports, high-speed rails, markets and the like, and has a large market scale. The traditional online uninterrupted power supply comprises an AC-DC rectification module and a DC-AC inversion module, and an energy storage battery pack is directly hung on a direct current bus. Generally, the power failure time of the mains supply is short, the storage battery pack is in a floating charge state for a long time, the utilization rate of the battery is low, the service life of the battery pack is shortened, and the large battery pack is expensive, so that the traditional uninterruptible power supply system is not economical.
Disclosure of Invention
In order to solve the problems, the invention provides an uninterruptible power supply system with an energy storage scheduling function and a control method of a DC-DC module. According to the time-of-use electricity price, when the electricity consumption is high, the energy storage battery pack is controlled to discharge and provide for the load, the use of commercial power is reduced, when the electricity consumption is low, the energy storage battery pack is controlled to charge, and the economical efficiency of the system is improved by obtaining the peak-to-valley electricity price difference.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the uninterrupted power system with the energy storage scheduling function comprises an AC-DC module, a DC-DC module and a DC-AC module, wherein the AC-DC module, a bidirectional DC-DC module and the DC-AC module adopt a three-phase T-shaped three-level topological structure, the input end of the AC-DC module is connected with a mains supply end, the output end of the DC-AC module is connected with a load, and the bidirectional DC-DC module is connected with an energy storage battery pack.
In some embodiments, the DC-DC module adopts a three-phase staggered parallel Buck-Boost bidirectional topology structure, and three-phase three-bridge arms are formed by IGBT switching tubes T1、T2、T3、T4、T5、T6The three-phase inductor comprises A, B, C three phases, wherein every two IGBT switching tubes are connected in series to form a bridge arm, the three bridge arms are connected in parallel and are respectively connected with the anode and the cathode of a high-voltage side, the midpoints of the three bridge arms are defined as a midpoint a, a midpoint b and a midpoint c, and the midpoint a, the midpoint b and the midpoint c are respectively connected with an inductor La、Lb、LcIs connected to three of the inductors La、Lb、LcThe other end of the capacitor is connected with the anode of the low-voltage side after being connected in parallel, the low-voltage side and the high-voltage side are respectively connected with a capacitor, and the cathode of the high-voltage side and the cathode of the low-voltage side are connected to form a common ground.
In some embodiments, the phase difference of the driving signals of the switching tubes corresponding to the three-phase three-leg bridge arm in one switching cycle is 120 degrees, and the switching control of each phase is independent.
In some embodiments, the uninterruptible power supply further comprises an upper computer system, and the upper computer is respectively connected with the AC-DC module, the DC-DC module and the DC-AC module of the uninterruptible power supply system.
Meanwhile, a control method of the DC-DC module is provided, which is used for the uninterruptible power supply system with the energy storage scheduling function, and the DC-DC module has a current source mode and a voltage source mode;
when the DC-DC module is in a current source mode, the power instruction of the energy storage battery pack is
The current power is PbatInputting the difference value of the two into a power loop PI controller, and outputting A, B, C inductive current instruction values of three-phase three-bridge arms after the output signals are limited by a ramp module
And subtracting the inductive current of each bridge arm, inputting the inductive current error signal into a current loop PI controller, and outputting the voltage V of the storage batterybatSubtracting the output of the current loop PI controller and multiplying by 1/VbusObtaining the duty ratio duty of the IGBT switching tubes on the bridge arms, outputting pulse PWM signals with fixed frequency through the PWM module of the DSP, and respectively driving the corresponding switching tubes T1-T2、T3-T4And T5-T6；
When the DC-DC module is in a voltage source mode, the voltage instruction of the high-voltage bus is
The current bus voltage is VbusTo combine the twoThe difference value of (A) is input into a voltage loop PI controller, and an output signal is used as an inductive current instruction value of A, B, C three-phase three-bridge arm
And subtracting the inductive current of each bridge arm respectively, inputting an inductive current error signal into a current loop PI controller, and storing the voltage V of the battery packbatSubtracting the output of the current loop PI controller and multiplying by 1/VbusObtaining the duty ratio duty of the IGBT switching tubes on the bridge arms, outputting pulse PWM signals with fixed frequency through the PWM module of the DSP, and respectively driving the corresponding switching tubes T1-T2、T3-T4、T5-T6。
The invention has the beneficial effects that: the invention adds a one-stage bidirectional DC-DC converter between a direct current bus and an energy storage battery pack of the uninterrupted power supply, and realizes energy storage power scheduling and uninterrupted power supply of the power supply by controlling the bidirectional DC-DC converter. The problem of traditional uninterrupted power source energy storage battery pack float for a long time and fill the low utilization ratio is solved, through reasonable charge-discharge, improve energy storage battery pack activity, extension energy storage battery pack life-span. In addition, at the peak electricity price moment of the power grid, the output electric energy of the energy storage battery pack is improved to save the energy used by the commercial power, the energy storage battery pack is charged at the low-valley electricity price moment of the power grid, and the economy of the uninterruptible power supply system is improved by obtaining the peak-valley electricity price difference.
Drawings
FIG. 1 is a schematic diagram of a main circuit in an embodiment of the invention;
FIG. 2 is a main circuit diagram of a DC-DC module according to an embodiment of the present invention;
FIG. 3 is a block diagram of current source mode control of a DC-DC module in an embodiment of the present invention;
fig. 4 is a voltage source mode control block diagram of the DC-DC module in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the following detailed description of the present invention is provided with reference to the accompanying drawings and detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
Example one
As shown in fig. 1, this embodiment provides an uninterruptible power supply system with an energy storage scheduling function, which includes an AC-DC module, a DC-DC module, and a DC-AC module, where the AC-DC module, the bidirectional DC-DC module, and the DC-AC module adopt a three-phase T-type three-level topology structure, an input end of the AC-DC module is used to be connected with a mains supply end, an output end of the DC-AC module is used to be connected with a load, and the bidirectional DC-DC module is connected with an energy storage battery pack.
The uninterruptible power supply system with the energy storage scheduling function further comprises an upper computer system, and the upper computer system is connected with the AC-DC module, the DC-DC module and the DC-AC module of the uninterruptible power supply system respectively. The upper computer system has the functions of displaying real-time running information and historical information, scheduling and setting the power of the energy storage battery pack and the like, and can set the charging and discharging power of the storage battery pack in the peak-valley period, so that the energy storage system can automatically schedule the power in the set peak-valley period.
As shown in fig. 2, the DC-DC module adopts a three-phase staggered parallel Buck-Boost bidirectional topology structure, and three-phase three-bridge arms are formed by IGBT switching tubes T1、T2、T3、T4、T5、T6The three-phase inductor comprises A, B, C three phases, wherein every two IGBT switching tubes are connected in series to form a bridge arm (six IGBT switching tubes are IGBT switching tubes with the same parameters, any two IGBT switching tubes can form one phase), the three bridge arms are connected in parallel and are respectively connected with the positive electrode and the negative electrode of the high-voltage side, the middle points of the three bridge arms are defined as a middle point a, a middle point b and a middle point c, and the middle points a, the middle point b and the middle point c are respectively connected with an inductor La、Lb、LcIs connected to three of the inductors La、Lb、LcThe other end of the capacitor is connected with the anode of the low-voltage side after being connected in parallel, the low-voltage side and the high-voltage side are respectively connected with a capacitor, and the cathode of the high-voltage side and the cathode of the low-voltage side are connected to form a common ground.
The phase difference of the driving signals of the switching tubes corresponding to the three-phase three-bridge arm in one switching period is 120 degrees, and the switching control of each phase is independent.
Example two
The control method of the DC-DC module is used for the uninterruptible power supply system with the energy storage scheduling function in the first embodiment, the DC-DC module has a current source mode and a voltage source mode, and the two working modes can be switched seamlessly online. When the mains voltage is normal, the AC-DC module works in a voltage source mode, the DC-DC module works in a current source mode at the moment, and the charging and discharging power of the storage battery can be scheduled through the upper computer. When the commercial power is cut off, the AC-DC module stops working, the DC-DC module is seamlessly switched from the current source mode to the voltage source mode, and uninterrupted power supply of the load is realized.
As shown in fig. 3, when the DC-DC module is in the current source mode, the power command of the energy storage battery pack is
Current power is PbatInputting the difference value of the two into a power loop PI controller, and outputting A, B, C inductive current instruction values of three-phase three-bridge arms after the output signals are limited by a ramp module
And subtracting the inductive current of each bridge arm, inputting the inductive current error signal into a current loop PI controller, and outputting the voltage V of the storage batterybat(feedforward voltage) is subtracted from the output of the current loop PI controller and multiplied by 1/VbusObtaining the duty ratio duty of the IGBT switching tubes on the bridge arms, outputting pulse PWM signals with fixed frequency through the PWM module of the DSP, and respectively driving the corresponding switching tubes T1-T2、T3-T4And T5-T6(ii) a The slope limiting module avoids step change of an inductive current instruction and avoids current impact. The output value of the current loop PI is the average voltage of the inductor, and the value of the current loop PI is the product of the current of the inductor and the equivalent resistance of the inductor. The reference directions of the inductor voltage and current are indicated in fig. 2. When the current loop PWhen the I output value is positive, the direction of the inductive current is positive, and the storage battery discharges. When the output value of the current loop PI is negative, the direction of the inductive current is negative, and the storage battery is charged.
As shown in FIG. 4, when the DC-DC module is in voltage source mode, the high voltage bus voltage command is
The current bus voltage is VbusThe difference value of the two is input into a voltage loop PI controller, and an output signal is used as an inductive current instruction value of A, B, C three-phase three-bridge arm
And subtracting the inductive current of each bridge arm respectively, inputting an inductive current error signal into a current loop PI controller, and storing the voltage V of the battery packbat(feedforward voltage) is subtracted from the output of the current loop PI controller and multiplied by 1/VbusObtaining the duty ratio duty of the IGBT switching tubes on the bridge arms, outputting pulse PWM signals with fixed frequency through the PWM module of the DSP, and respectively driving the corresponding switching tubes T1-T2、T3-T4And T5-T6。
In the process of switching from the current source mode to the voltage source mode, the current loop PI output value in the voltage source mode of fig. 4 needs to be added to the current loop PI output value in the last operation in the current source mode of fig. 3 to serve as an initial value when the voltage source mode is started, so that a control signal is prevented from generating large sudden change, and the switching process is smoothly performed.
By the uninterruptible power supply system of the first embodiment and the control method of the DC-DC module of the second embodiment, the present invention adds a one-stage bidirectional DC-DC converter between the DC bus of the uninterruptible power supply and the energy storage battery pack, and realizes energy storage power scheduling and uninterruptible power supply of the power supply by controlling the bidirectional DC-DC converter. The problem of traditional uninterrupted power source storage battery pack float for a long time and fill the low utilization ratio is solved, through reasonable charge-discharge, improve energy storage group battery activity, extension energy storage group battery life-span. In addition, at the peak electricity price moment of the power grid, the output electric energy of the energy storage battery pack is improved to save the energy used by the commercial power, the energy storage battery pack is charged at the low-valley electricity price moment of the power grid, and the economy of the uninterruptible power supply system is improved by obtaining the peak-valley electricity price difference.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (1)
1. A method of controlling a DC-DC module, characterized by: the uninterruptible power supply system comprises an AC-DC module, a DC-DC module and a DC-AC module, wherein the AC-DC module, the bidirectional DC-DC module and the DC-AC module adopt a three-phase T-shaped three-level topological structure, the input end of the AC-DC module is connected with a mains supply end, the output end of the DC-AC module is connected with a load, and the bidirectional DC-DC module is connected with an energy storage battery pack;
the DC-DC module adopts a three-phase staggered parallel Buck-Boost bidirectional topological structure, and three-phase three-bridge arms are formed by IGBT (insulated gate bipolar transistor) switching tubes T1、T2、T3、T4、T5、T6The three-phase inductor comprises A, B, C three phases, wherein every two IGBT switching tubes are connected in series to form a bridge arm, the three bridge arms are connected in parallel and are respectively connected with the anode and the cathode of a high-voltage side, the midpoints of the three bridge arms are defined as a midpoint a, a midpoint b and a midpoint c, and the midpoint a, the midpoint b and the midpoint c are respectively connected with an inductor La、Lb、LcIs connected to three of the inductors La、Lb、LcThe other end of the first capacitor is connected with the anode of the low-voltage side after being connected in parallel, the low-voltage side and the high-voltage side are respectively connected with a capacitor, and the cathode of the high-voltage side and the cathode of the low-voltage side are connected to form a common ground;
the phase difference of the driving signals of the switching tubes corresponding to the three-phase three-bridge arm in one switching period is 120 degrees, and the switching control of each phase is independent;
the system comprises an uninterruptible power supply system, an AC-DC module, a DC-DC module and a DC-AC module, and is characterized by further comprising an upper computer system, wherein the upper computer is respectively connected with the AC-DC module, the DC-DC module and the DC-AC module of the uninterruptible power supply system, and the upper computer system is used for displaying real-time running information and historical information and setting power scheduling of an energy storage battery pack;
the DC-DC module has a current source mode and a voltage source mode;
when the DC-DC module is in a current source mode, the power instruction of the energy storage battery pack isP * bat At a current power ofP bat Inputting the difference value of the two into a power loop PI controller, and outputting A, B, C inductive current instruction value I of the three-phase three-bridge arm after the output signal is limited by a ramp module* LA 、I* LB 、I* LC And subtracting the inductive current of each bridge arm, inputting the inductive current error signal into a current loop PI controller, and storing the voltage of the storage batteryV bat Subtracted from the output of the current loop PI controller and multiplied by 1-V bus Obtaining the duty ratio duty of the IGBT switching tubes on the bridge arms, outputting pulse PWM signals with fixed frequency through the PWM module of the DSP, and respectively driving the corresponding switching tubes T1-T2、T3-T4、T5-T6；
When the DC-DC module is in a voltage source mode, the voltage instruction of the high-voltage bus isV * bus At a current bus voltage ofV bus The difference value of the two is input into a voltage loop PI controller, and an output signal is used as an inductive current instruction value I of an A, B, C three-phase three-bridge arm* LA 、I* LB 、I* LC And subtracting the inductive current of each bridge arm respectively, inputting an inductive current error signal into a current loop PI controller, and storing the voltage of the battery packV bat Subtracted from the output of the current loop PI controller and multiplied by 1-V busObtaining the duty ratio duty of the IGBT switching tubes on the bridge arms, outputting pulse PWM signals with fixed frequency through the PWM module of the DSP, and respectively driving the corresponding switching tubes T1-T2、T3-T4、T5-T6；
And in the process of switching the current source mode to the voltage source mode, adding the current loop PI output value in the voltage source mode and the current loop PI output value in the last time of current source mode operation to serve as an initial value when the voltage source mode is started.
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| CN112242741B (en) * | 2020-09-25 | 2023-03-24 | 深圳供电局有限公司 | Uninterruptible power supply device and control method thereof |
| CN112421659A (en) * | 2020-10-26 | 2021-02-26 | 北京精密机电控制设备研究所 | Energy storage dilatation power |
| CN114531031B (en) * | 2020-11-23 | 2024-03-19 | 中国船舶集团有限公司第七一一研究所 | Control system and control method of marine high-power bidirectional direct current converter |
| CN114189007B (en) * | 2021-11-15 | 2024-04-12 | 阳光电源股份有限公司 | Vehicle-mounted charger working mode switching control method and device and vehicle-mounted charger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852586A (en) * | 2015-05-27 | 2015-08-19 | 深圳科士达科技股份有限公司 | Bi-directional DCDC converter |
| CN106877379A (en) * | 2015-12-14 | 2017-06-20 | 韩会义 | A kind of parallel network power generation power stabilizes control method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684686A (en) * | 1994-01-12 | 1997-11-04 | Deltec Electronics Corporation | Boost-input backed-up uninterruptible power supply |
| US7158393B2 (en) * | 2005-03-11 | 2007-01-02 | Soft Switching Technologies Corporation | Power conversion and voltage sag correction with regenerative loads |
| TWI377762B (en) * | 2008-01-23 | 2012-11-21 | Delta Electronics Inc | Uninterruptible power supply module |
| CN102025182B (en) * | 2010-11-30 | 2012-10-31 | 梁一桥 | Modular charging/discharging system of power battery pack of multifunctional electromobile |
| CN102790422B (en) * | 2012-07-30 | 2015-07-29 | 广东易事特电源股份有限公司 | A kind of UPS charging module device and control method thereof |
| CN105790429A (en) * | 2016-04-28 | 2016-07-20 | 上海电机学院 | Low-power uninterrupted power source based on bidirectional DC-DC converter and control method thereof |
| CN109713785A (en) * | 2019-03-06 | 2019-05-03 | 江苏苏宁银行股份有限公司 | A kind of bank data centers distribution UPS power supply system and its method of supplying power to |
| CN110071572B (en) * | 2019-04-25 | 2021-03-09 | 合肥堃能电气科技有限公司 | Bidirectional charging and discharging integrated emergency power supply device and control method thereof |
-
2019
- 2019-12-19 CN CN201911319849.4A patent/CN111106613B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852586A (en) * | 2015-05-27 | 2015-08-19 | 深圳科士达科技股份有限公司 | Bi-directional DCDC converter |
| CN106877379A (en) * | 2015-12-14 | 2017-06-20 | 韩会义 | A kind of parallel network power generation power stabilizes control method |
Non-Patent Citations (4)
| Title |
|---|
| DC/DC变换器控制的仿真研究与设计;梁逊;《中国优秀硕⼠学位论⽂全⽂数据库⼯程科技Ⅱ辑》;20160815(第08期);第2-3、32-38页 * |
| 具有馈电功能的新型并网UPS 系统及其分散逻辑控制策略;赵彪等;《中国电机工程学报》;20111105;第31卷(第31期);第85-93页 * |
| 带光储系统的模块化电力电子变压器在配电网中的仿真研究;袁威等;《电测与仪表》;20160910;第53卷(第17期);第85-91页 * |
| 赵彪等.具有馈电功能的新型并网UPS 系统及其分散逻辑控制策略.《中国电机工程学报》.2011,第31卷(第31期),第85-93页. * |
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