WO2010066107A1 - Hybrid ac power supply control system for communication base station - Google Patents

Hybrid ac power supply control system for communication base station Download PDF

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Publication number
WO2010066107A1
WO2010066107A1 PCT/CN2009/001402 CN2009001402W WO2010066107A1 WO 2010066107 A1 WO2010066107 A1 WO 2010066107A1 CN 2009001402 W CN2009001402 W CN 2009001402W WO 2010066107 A1 WO2010066107 A1 WO 2010066107A1
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WO
WIPO (PCT)
Prior art keywords
converter
battery pack
engine
voltage
current sensor
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PCT/CN2009/001402
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French (fr)
Chinese (zh)
Inventor
肖亨琳
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无锡开普动力有限公司
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Publication of WO2010066107A1 publication Critical patent/WO2010066107A1/en

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Classifications

    • 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
    • H02J9/08—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 requiring starting of a prime-mover
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering

Definitions

  • the present invention relates to a hybrid AC power supply control system for a communication base station, and more particularly to an AC power supply system having a short-term overload capability.
  • the communication base station can also operate normally when the utility power is cut off, and the communication base station is equipped with an emergency power source such as an internal combustion generator set.
  • the power-consuming equipment of the communication base station includes some auxiliary equipment such as an inductive load such as an air conditioner, in addition to a communication device that operates for a long period of time and low power.
  • an inductive load such as an air conditioner
  • the inductive load can only be used with a load equivalent to about 1/3 of the rated value of the engine-driven generator.
  • only high-power generator sets can be equipped.
  • the communication equipment is a load that operates for a long time with low power.
  • the communication equipment load is low, for example, at night, the workload is greatly reduced compared to daytime, so that the power supply required by the communication equipment is also greatly reduced.
  • the generator set needs to continuously operate at a fixed speed, and its fuel consumption and rated power are basically equal, which causes waste of energy. Summary of the invention
  • An object of the present invention is to overcome the above-mentioned deficiencies and to provide a hybrid AC power supply control system for a communication base station capable of driving an inductive load of equal power and saving energy when the power consumption of the communication device is reduced.
  • a hybrid AC power supply control system for a communication base station includes an engine and a permanent magnet generator, and is characterized by: the engine, the battery pack, the AC-DC converter, the DC-DC converter, The DC-AC converter and the first current sensor are respectively connected to the main controller, the battery pack is connected to the DC-DC converter, the DC-DC converter is connected to the DC-AC converter, and the engine is connected to the permanent magnet generator.
  • the permanent magnet generator is connected to the AC-DC converter, the AC-DC converter is connected to the DC-AC converter, and the DC-AC converter is connected to the powered device through the first current sensor;
  • the main controller separately collects signals of the first current sensor, the battery pack, the DC-DC converter, the AC-DC converter, and the DC-AC converter, and performs reasonable power distribution through the collected signals;
  • the engine drives a permanent magnet generator, the DC voltage of the permanent magnet generator is converted by the AC-DC conversion, and the DC voltage of the battery pack is boosted by the DC-DC converter, and the DC voltages are converted by DC-AC. After being converted into alternating current, the device is connected to the powered device;
  • the AC-DC converter performs controllable rectification on the output of the permanent magnet generator, and controls the rectified voltage by controlling the conduction angle of the thyristor;
  • the DC-DC converter boosts the voltage of the battery pack and outputs the boosted DC voltage to the output side of the AC-DC converter;
  • the DC on the output side of the AC-DC converter is charged to the battery pack through a DC-DC converter.
  • the DC-DC converter is a bidirectional DC converter.
  • the invention is jointly powered by a generator set and a battery pack, and can provide twice the rated power for a short time to start an inductive load without using a high power generator set.
  • the invention provides three working modes, wherein the main controller performs intelligent switching of three working modes, and the main controller controls the corresponding rotating speed of the engine according to the magnitude of the load power, and supplements the battery by intermittently running the engine power according to the battery pack power.
  • the amount of electricity According to the above three characteristics of intelligent switching, changing the speed and intermittent operation, the generator set saves more than 20% of fuel compared with the conventional fixed speed synchronous generator, saving fuel.
  • the invention detects the power of the battery pack by the main controller, and the battery pack is not in excessive discharge and excessive charging, thereby prolonging the service life of the battery pack.
  • the main controller controls the corresponding engine speed according to the magnitude of the load power, so that the engine is not always in the high-speed moving state, which can reduce the noise of the generator set.
  • Figure 1 is a schematic block diagram of the structure of the present invention.
  • FIG. 2 is a schematic block diagram of a main controller in the present invention.
  • Figure 3 is a schematic block diagram of an engine controller in the present invention.
  • FIG. 1 and FIG. 2 it includes an engine 1, a permanent magnet generator 2, a battery pack 3, a DC-DC converter 4, an AC-DC converter 5, a DC-AC converter 6, a power device 7, and a main unit.
  • Controller 8 chip model XC164CM
  • first current sensor 9 second current sensor 10
  • third current sensor 11 AC voltage 12, DC voltage 13, LCD display and user operation button 14
  • engine 15 the battery pack temperature sensor 16, the battery pack current sensor 17, the Fenton 3's pressure sensor 18, and the EEP-ROM hold data 19.
  • Power equipment 7 Mainly includes battery charger, base station air conditioner, base station communication power module (model: ADC-4850) and lighting.
  • the generator 2 of the present invention is a three-phase multi-pole permanent magnet generator, and the generator 2 is connected to the engine 1.
  • the engine 1, the battery pack 3, the AC-DC converter 5, the DC-DC converter 4, the DC-AC converter 6, and the first current sensor 9 are respectively connected to the main controller 8, and the battery pack 3 is connected.
  • DC-DC converter 4, DC-DC converter 4 is connected to DC-AC converter 6, engine 1 is connected to permanent magnet generator 2, permanent magnet generator 2 is connected to AC-DC converter 5, AC-DC converter 5 is connected to the DC-AC converter 6, which is connected to the consumer 7 via the first current sensor 9.
  • the engine 1 drives a permanent magnet generator 2, a DC voltage converted by the permanent magnet generator 2 via the AC-DC converter 5, and a DC voltage boosted by the DC-DC converter 4 of the battery pack 3, which are DC The voltage is converted to AC power by the DC-AC converter 6, and then connected to the electric device 7.
  • the AC-DC converter 5 performs controllable rectification on the output of the permanent magnet generator 2, and controls the rectified voltage by controlling the conduction angle of the thyristor;
  • the DC-DC converter 4 is a bidirectional DC converter, The voltage of the battery pack 3 is boosted, and the boosted DC voltage is output to the output side of the AC-DC converter 5; the DC of the output side of the AC-DC converter 5 is passed through the DC-DC converter 4 to the battery pack 3. Charge it.
  • the DC-DC converter 4 stops acquiring the output from the battery pack 3.
  • the DC-AC converter 6 is a DC inverter AC inverter, which adopts SPWM modulation technology and inductive filtering technology to convert DC power into 50HZ AC power, and generates a sine wave with less than 3% distortion, which can meet the high requirement AC power supply.
  • Quality electrical equipment 7 Capacitive or inductive loads are 1.2 to 1.5 times more common than conventional synchronous generators.
  • the main controller 8 is a microcomputer controller chip model XC164CM, and collects signals of the current sensor 9, the battery pack 3, the DC-DC converter 4, the AC-DC converter 5, and the DC-AC converter 6. A reasonable power distribution is performed by the signals collected above.
  • the main controller 8 is respectively connected to the first current sensor 9, the second current sensor 10, the third current sensor 11, the alternating current voltage 12, the direct current voltage 13, the LCD display and the user operation button 14, and the engine control through the wires.
  • the battery 15, the battery pack temperature sensor 16, the battery pack current sensor 17, the battery pack voltage sensor 18, and the EEP-ROM save data 19 are connected.
  • the main controller 8 communicates with the engine controller through CAN or RS485 communication The letter thus controls the operation of the engine 1.
  • the main controller 8 detects the amount of electric power of the battery pack 3. When the electric quantity of the battery pack 3 is lower than the minimum value, the generator 2 is automatically activated to charge the battery pack 3.
  • the engine controller 15 is electrically connected to the fuel amount sensor 15-2, the oil pressure sensor 15-3, the oil temperature sensor 15-4, and the water temperature sensor 15-5 by a chip (model ATmega8L) 15-1.
  • the rotational speed sensor 15-6, the starter motor relay 15-7, the stop relay 15-8, the CAN communication 15-9, and the stepping motor M1 that controls the engine speed are connected to control the operation of the engine 2.
  • the main controller 8 of the present invention detects the power of the powered device 7 through the first current sensor 9, and provides three operating modes according to the power of the powered device 7:
  • Low-power power supply mode The battery pack 3 passes through the DC-DC converter 4, and the power supply is boosted to the DC-AC converter. 6 is converted into an AC power source, which is called a battery pack power supply route.
  • the permanent magnet generator 2 is driven by the engine 1 to generate alternating current, which is converted into direct current by the AC-DC converter 5, and sent to the DC-AC converter 6 to be converted into an alternating current power source, which is called a power supply route of the generator set.
  • Super power supply mode The above battery pack power supply route plus the above-mentioned generator set power supply route, according to the maximum allowable discharge current of the battery pack 3, provides the maximum output power.
  • the maximum output power of the DC-DC converter 4 is P1
  • the power of the powered device is P2.
  • the maximum output power of the DC-DC converter 4 is shown in Table 1. According to this relational table operation, the inductive load that is started for a short time can be satisfied, and the DC-DC converter 4 can be surely operated for a long time.
  • the main controller 8 and the collected power of the powered device 7 are based on the values of P0 and P1 described above, The specific work is as follows:
  • the main controller 8 commands the genset rated power P0 and the DC-DC converter 4 output power P1 to simultaneously supply the power device 7 power P2 to meet the power device. 7 power P2 requirements. For example, when the communication base station enables the air conditioner, the rated power P0 of the genset and the output power P1 of the DC-DC converter 4 are simultaneously supplied to the air conditioner to start. After the startup is successful, the power required by the air conditioner will decrease, and the output of the DC-DC converter 4 is turned off. The power Pl is supplied by the genset rated power P0.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

A hybrid AC power supply control system for a communication base station includes an engine (1) and a permanent magnet generator (2). The engine (1), a storage battery (3), an AC-DC converter (5), a DC-DC converter (4), a DC-AC converter (6) and a first current sensor (9) are connected with a main controller (8) respectively. The storage battery (3) is connected with the DC-DC converter (4). The DC-DC converter (4) is connected with the DC-AC converter (6). The engine (1) is connected with the generator (2). The generator (2) is connected with the AC-DC converter (5). The AC-DC converter (5) is connected with the DC-AC converter (6). The DC-AC converter (6) is connected with electrical equipment (7) via the first current sensor (9).

Description

通信基站用混合交流供电电源控制系统  Hybrid AC power supply control system for communication base station
技术领域 Technical field
本发明涉及一种通信基站用混合交流供电电源控制系统， 具体地说是具 有短时过载能力的交流电源系统。  The present invention relates to a hybrid AC power supply control system for a communication base station, and more particularly to an AC power supply system having a short-term overload capability.
背景技术 Background technique
为了保持通信的畅通， 使通信基站在市电停电时也能正常运转， 通信基 站都配备有内燃发电机组等应急电源。 通信基站的用电设备， 除了使用长时 间小功率工作的通信设备外， 还包括一些辅助设备， 例如空调等电感负载。 启动电感负载时，会产生瞬时间的大电流，使发电机组发生瞬时的过载状态， 发动机和发电机的转数降低， 导致发电机的输出降低， 从而陷入更甚的过载 状态。 因此， 电感负载只能使用相当于发动机驱动式发电机的额定值的 1/3 左右的负载。 为了正常启动电感负载， 只能配备大功率的发电机组。  In order to keep the communication smooth, the communication base station can also operate normally when the utility power is cut off, and the communication base station is equipped with an emergency power source such as an internal combustion generator set. The power-consuming equipment of the communication base station includes some auxiliary equipment such as an inductive load such as an air conditioner, in addition to a communication device that operates for a long period of time and low power. When the inductive load is started, a large instantaneous current is generated, causing the generator set to instantaneously overload, and the number of revolutions of the engine and the generator is lowered, resulting in a decrease in the output of the generator, thereby causing a more overload condition. Therefore, the inductive load can only be used with a load equivalent to about 1/3 of the rated value of the engine-driven generator. In order to start the inductive load normally, only high-power generator sets can be equipped.
另外， 通信设备都是长时间小功率工作的负载， 当通信设备负荷低时， 例如在晚上时， 因工作量比白天大大减少， 致使通信设备所需要的电源电量 也大大地减少。 但是为了保证固定的电压和频率， 发电机组需持续地以固定 的转速工作， 其油耗和额定功率工作时基本相等， 这就造成了能源的浪费。 发明内容  In addition, the communication equipment is a load that operates for a long time with low power. When the communication equipment load is low, for example, at night, the workload is greatly reduced compared to daytime, so that the power supply required by the communication equipment is also greatly reduced. However, in order to ensure a fixed voltage and frequency, the generator set needs to continuously operate at a fixed speed, and its fuel consumption and rated power are basically equal, which causes waste of energy. Summary of the invention
本发明的目的在于克服上述不足之处， 从而提供一种通信基站用混合交 流供电电源控制系统， 该电源控制系统能驱动相等功率的电感负载， 并且在 通信设备用电量减小时可节约能源。  SUMMARY OF THE INVENTION An object of the present invention is to overcome the above-mentioned deficiencies and to provide a hybrid AC power supply control system for a communication base station capable of driving an inductive load of equal power and saving energy when the power consumption of the communication device is reduced.
按照本发明提供的技术方案， 一种通信基站用混合交流供电电源控制系 统， 包括发动机、 永磁发电机， 特征是： 所述发动机、 蓄电池组、 AC-DC转 换器、 DC-DC转换器、 DC-AC转换器及第一电流传感器分别与主控制器相 连接， 所述蓄电池组连接 DC-DC转换器， DC-DC转换器与 DC-AC转换器 相连接， 发动机连接永磁发电机， 永磁发电机连接 AC-DC转换器， AC-DC 转换器与 DC-AC转换器相连接， DC-AC转换器通过第一电流传感器与用电 设备相连接；  According to the technical solution provided by the present invention, a hybrid AC power supply control system for a communication base station includes an engine and a permanent magnet generator, and is characterized by: the engine, the battery pack, the AC-DC converter, the DC-DC converter, The DC-AC converter and the first current sensor are respectively connected to the main controller, the battery pack is connected to the DC-DC converter, the DC-DC converter is connected to the DC-AC converter, and the engine is connected to the permanent magnet generator. The permanent magnet generator is connected to the AC-DC converter, the AC-DC converter is connected to the DC-AC converter, and the DC-AC converter is connected to the powered device through the first current sensor;
所述主控制器分别采集第一电流传感器、 蓄电池组、 DC-DC 转换器、 AC-DC转换器及 DC-AC转换器的信号， 通过上述采集的信号， 进行合理的 功率分配； 所述发动机驱动永磁发电机， 永磁发电机经过 AC-DC转换罌转换后的 直流电压以及蓄电池组由 DC-DC转换器进行升压的直流电压， 这两种直流 电压通过 DC-AC转换器转换为交流电后与用电设备相连接； The main controller separately collects signals of the first current sensor, the battery pack, the DC-DC converter, the AC-DC converter, and the DC-AC converter, and performs reasonable power distribution through the collected signals; The engine drives a permanent magnet generator, the DC voltage of the permanent magnet generator is converted by the AC-DC conversion, and the DC voltage of the battery pack is boosted by the DC-DC converter, and the DC voltages are converted by DC-AC. After being converted into alternating current, the device is connected to the powered device;
所述 AC-DC转换器对永磁发电机的输出进行可控整流， 通过控制可控 硅导通角来控制整流的电压；  The AC-DC converter performs controllable rectification on the output of the permanent magnet generator, and controls the rectified voltage by controlling the conduction angle of the thyristor;
所述 DC-DC转换器使蓄电池组的电压升压， 并将升压后的直流电压输 出到 AC-DC转换器的输出侧；  The DC-DC converter boosts the voltage of the battery pack and outputs the boosted DC voltage to the output side of the AC-DC converter;
所述 AC-DC转换器的输出侧的直流通过 DC-DC转换器向蓄电池组进行 充电。  The DC on the output side of the AC-DC converter is charged to the battery pack through a DC-DC converter.
所述 DC-DC转换器为双向直流转换器。  The DC-DC converter is a bidirectional DC converter.
本发明与已有技术相比具有以下优点：  The present invention has the following advantages over the prior art:
1、本发明由发电机组与蓄电池组联合供电，能短时提供两倍的额定功率 来启动电感负载， 不需要使用大功率的发电机组。  1. The invention is jointly powered by a generator set and a battery pack, and can provide twice the rated power for a short time to start an inductive load without using a high power generator set.
2、本发明提供三种工作模式，由主控制器进行三种工作模式的智能切换， 同时主控制器根据负载功率的大小控制发动机相应的转速, 根据蓄电池组电 量间歇地运转发动机发电来补充电池的电量。根据上述智能切换、改变转速、 间歇运转三个特点， 此发电机组比普通定转速同步发电机省油 20%以上， 节 省燃料。  2. The invention provides three working modes, wherein the main controller performs intelligent switching of three working modes, and the main controller controls the corresponding rotating speed of the engine according to the magnitude of the load power, and supplements the battery by intermittently running the engine power according to the battery pack power. The amount of electricity. According to the above three characteristics of intelligent switching, changing the speed and intermittent operation, the generator set saves more than 20% of fuel compared with the conventional fixed speed synchronous generator, saving fuel.
3、本发明由主控制器检测蓄电池组的电量，蓄电池组不会处于过度的放 电和过度的充电， 延长了蓄电池组的使用寿命。  3. The invention detects the power of the battery pack by the main controller, and the battery pack is not in excessive discharge and excessive charging, thereby prolonging the service life of the battery pack.
4、主控制器根据负载功率的大小控制发动机相应的转速，使发动机不是 一直处于高速动转状态， 可降低发电机组的噪声。  4. The main controller controls the corresponding engine speed according to the magnitude of the load power, so that the engine is not always in the high-speed moving state, which can reduce the noise of the generator set.
附图说明 DRAWINGS
图 1为本发明的结构方框原理图。  Figure 1 is a schematic block diagram of the structure of the present invention.
图 2为本发明中的主控制器的原理方框图。  2 is a schematic block diagram of a main controller in the present invention.
图 3为本发明中的发动机控制器的原理方框图。  Figure 3 is a schematic block diagram of an engine controller in the present invention.
具体实施方式 detailed description
下面本发明将结合附图中的实施例作进一步描述：  The invention will be further described below in conjunction with the embodiments of the drawings:
如图 1、 图 2所示， 包括发动机 1、 永磁发电机 2、 蓄电池组 3、 DC-DC 转换器 4、 AC-DC转换器 5、 DC-AC转换器 6、 用电设备 7、 主控制器 8(芯 片型号为 XC164CM)、 第一电流传感器 9、 第二电流传感器 10、 第三电流传 感器 11、 交流电压 12、 直流电压 13、 LCD显示和用户操作按键 14、 发动机 控制器 15、 蓄电池组温度传感器 16、 蓄电池组电流传感器 17、 奮电 ¾¾¾ 压传感器 18及 EEP-ROM保存数据 19。 As shown in FIG. 1 and FIG. 2, it includes an engine 1, a permanent magnet generator 2, a battery pack 3, a DC-DC converter 4, an AC-DC converter 5, a DC-AC converter 6, a power device 7, and a main unit. Controller 8 (chip model XC164CM), first current sensor 9, second current sensor 10, third current sensor 11, AC voltage 12, DC voltage 13, LCD display and user operation button 14, engine The controller 15, the battery pack temperature sensor 16, the battery pack current sensor 17, the Fenton 3's pressure sensor 18, and the EEP-ROM hold data 19.
用电设备 7:主要包括蓄电池充电器， 基站空调， 基站通信电源模块 （型 号： ADC- 4850) 及照明等。  Power equipment 7: Mainly includes battery charger, base station air conditioner, base station communication power module (model: ADC-4850) and lighting.
本发明发电机 2为三相多极永磁发电机， 发电机 2连接于发动机 1 上。所述发动机 1、蓄电池组 3、 AC-DC转换器 5、 DC-DC转换器 4、 DC-AC 转换器 6及第一电流传感器 9分别与主控制器 8相连接， 所述蓄电池组 3连 接 DC-DC转换器 4， DC-DC转换器 4与 DC-AC转换器 6相连接， 发动机 1 连接永磁发电机 2， 永磁发电机 2连接 AC-DC转换器 5， AC-DC转换器 5 与 DC-AC转换器 6相连接， DC-AC转换器 6通过第一电流传感器 9与用电 设备 7相连接。  The generator 2 of the present invention is a three-phase multi-pole permanent magnet generator, and the generator 2 is connected to the engine 1. The engine 1, the battery pack 3, the AC-DC converter 5, the DC-DC converter 4, the DC-AC converter 6, and the first current sensor 9 are respectively connected to the main controller 8, and the battery pack 3 is connected. DC-DC converter 4, DC-DC converter 4 is connected to DC-AC converter 6, engine 1 is connected to permanent magnet generator 2, permanent magnet generator 2 is connected to AC-DC converter 5, AC-DC converter 5 is connected to the DC-AC converter 6, which is connected to the consumer 7 via the first current sensor 9.
所述发动机 1驱动永磁发电机 2，永磁发电机 2经过 AC-DC转换器 5转 换后的直流电压以及蓄电池组 3 由 DC-DC转换器 4进行升压的直流电压， 这两种直流电压通过 DC-AC转换器 6转换为交流电后与用电设备 7相连接。  The engine 1 drives a permanent magnet generator 2, a DC voltage converted by the permanent magnet generator 2 via the AC-DC converter 5, and a DC voltage boosted by the DC-DC converter 4 of the battery pack 3, which are DC The voltage is converted to AC power by the DC-AC converter 6, and then connected to the electric device 7.
所述 AC-DC转换器 5对永磁发电机 2的输出进行可控整流， 通过控制 可控硅导通角来控制整流的电压； 所述 DC-DC转换器 4为双向直流转换器， 使蓄电池组 3 的电压升压， 并将升压后的直流电压输出到 AC-DC转换器 5 的输出侧； AC-DC转换器 5的输出侧的直流通过 DC-DC转换器 4向蓄电池 组 3进行充电。 当蓄电池组 3对负载的电力供给能力下降时， DC-DC转换器 4停止从蓄电池组 3获取输出。  The AC-DC converter 5 performs controllable rectification on the output of the permanent magnet generator 2, and controls the rectified voltage by controlling the conduction angle of the thyristor; the DC-DC converter 4 is a bidirectional DC converter, The voltage of the battery pack 3 is boosted, and the boosted DC voltage is output to the output side of the AC-DC converter 5; the DC of the output side of the AC-DC converter 5 is passed through the DC-DC converter 4 to the battery pack 3. Charge it. When the power supply capability of the battery pack 3 to the load is lowered, the DC-DC converter 4 stops acquiring the output from the battery pack 3.
所述 DC-AC转换器 6为直流逆变交流的逆变器，采用 SPWM调制技术， 电感滤波技术，把直流电转换为 50HZ的交流电，产生小于 3%畸变的正弦波， 能满足高要求交流电源质量的用电设备 7。 带容性或电感性负载的能力是普 通同步发电机的 1.2~1.5倍。  The DC-AC converter 6 is a DC inverter AC inverter, which adopts SPWM modulation technology and inductive filtering technology to convert DC power into 50HZ AC power, and generates a sine wave with less than 3% distortion, which can meet the high requirement AC power supply. Quality electrical equipment 7. Capacitive or inductive loads are 1.2 to 1.5 times more common than conventional synchronous generators.
所述主控制器 8为微机控制器芯片型号为 XC164CM,采集电流传感器 9、 蓄电池组 3、 DC-DC转换器 4、 AC-DC转换器 5、 DC-AC转换器 6的信号。 通过上述采集的信号， 进行合理的功率分配。  The main controller 8 is a microcomputer controller chip model XC164CM, and collects signals of the current sensor 9, the battery pack 3, the DC-DC converter 4, the AC-DC converter 5, and the DC-AC converter 6. A reasonable power distribution is performed by the signals collected above.
如图 2所示，主控制器 8通过导线分别与第一电流传感器 9、第二电流传感 器 10、 第三电流传感器 11、 交流电压 12、 直流电压 13、 LCD显示和用户操作 按键 14、发动机控制器 15、 蓄电池组温度传感器 16、 蓄电池组电流传感器 17、 蓄电池组电压传感器 18及 EEP-ROM保存数据 19连接。  As shown in FIG. 2, the main controller 8 is respectively connected to the first current sensor 9, the second current sensor 10, the third current sensor 11, the alternating current voltage 12, the direct current voltage 13, the LCD display and the user operation button 14, and the engine control through the wires. The battery 15, the battery pack temperature sensor 16, the battery pack current sensor 17, the battery pack voltage sensor 18, and the EEP-ROM save data 19 are connected.
所述主控制器 8通过 CAN或 RS485的通信方式与发动机控制器进行通 信， 从而控制发动机 1工作。 主控制器 8检测所述蓄电池组 3的电量， 当所 述蓄电池组 3的电量低于最小值时， 自动启动所述发电机 2， 对所述蓄电池 组 3进行充电。 The main controller 8 communicates with the engine controller through CAN or RS485 communication The letter thus controls the operation of the engine 1. The main controller 8 detects the amount of electric power of the battery pack 3. When the electric quantity of the battery pack 3 is lower than the minimum value, the generator 2 is automatically activated to charge the battery pack 3.
如图 3所示， 发动机控制器 15由芯片 （型号为 ATmega8L) 15-1通过 导线分别与燃油量传感器 15-2、机油压力传感器 15-3、机油温度传感器 15-4、 水温传感器 15-5、转速传感器 15-6、启动马达继电器 15-7、停机继电器 15-8、 CAN通讯 15-9及控制发动机转速的步进电机 Ml连接， 从而控制发动机 2 的运转。  As shown in FIG. 3, the engine controller 15 is electrically connected to the fuel amount sensor 15-2, the oil pressure sensor 15-3, the oil temperature sensor 15-4, and the water temperature sensor 15-5 by a chip (model ATmega8L) 15-1. The rotational speed sensor 15-6, the starter motor relay 15-7, the stop relay 15-8, the CAN communication 15-9, and the stepping motor M1 that controls the engine speed are connected to control the operation of the engine 2.
本发明的主控制器 8通过第一电流传感器 9检测用电设备 7的功率， 根 据用电设备 7的功率提供三种工作模式：  The main controller 8 of the present invention detects the power of the powered device 7 through the first current sensor 9, and provides three operating modes according to the power of the powered device 7:
小功率供电模式： 由蓄电池组 3经过 DC-DC转换器 4， 电源升压送至 DC-AC转换器 6转换成交流电源， 称为蓄电池组供电路线。  Low-power power supply mode: The battery pack 3 passes through the DC-DC converter 4, and the power supply is boosted to the DC-AC converter. 6 is converted into an AC power source, which is called a battery pack power supply route.
额定功率供电模式： 由发动机 1带动永磁发电机 2工作， 产生交流电， 通过 AC-DC转换器 5转换成直流电，送至 DC-AC转换器 6转换成交流电源， 称为发电机组供电路线。  Rated power supply mode: The permanent magnet generator 2 is driven by the engine 1 to generate alternating current, which is converted into direct current by the AC-DC converter 5, and sent to the DC-AC converter 6 to be converted into an alternating current power source, which is called a power supply route of the generator set.
超功率供电模式： 上述蓄电池组供电路线加上述发电机组供电路线， 根 据蓄电池组 3最大允许放电电流， 提供最大的输出功率。  Super power supply mode: The above battery pack power supply route plus the above-mentioned generator set power supply route, according to the maximum allowable discharge current of the battery pack 3, provides the maximum output power.
本发明的工作过程如下：  The working process of the present invention is as follows:
设定发电机组额定功率为 P0， DC-DC转换器 4的最大输出功率为 P1 , 用电设备的功率为 P2。 本发明的一个实施例， 取 P0=6000W, P1=6000W。 为了保证蓄电池组 3的寿命和 DC-DC转换器 4的可靠运行， DC-DC转换器 4的输出最大功率与时间的关系如表 1所示。 按照此关系表运行， 即能满足 短时间启动的电感负载， 又能保证 DC-DC转换器 4长时间可靠地工作。  Set the rated power of the generator set to P0, the maximum output power of the DC-DC converter 4 is P1, and the power of the powered device is P2. In one embodiment of the present invention, P0 = 6000 W and P1 = 6000 W are taken. In order to ensure the life of the battery pack 3 and the reliable operation of the DC-DC converter 4, the maximum output power of the DC-DC converter 4 is shown in Table 1. According to this relational table operation, the inductive load that is started for a short time can be satisfied, and the DC-DC converter 4 can be surely operated for a long time.
表 1  Table 1
Figure imgf000006_0001
Figure imgf000006_0001
主控制器 8根据上述的 P0和 P1的值， 和采集到的用电设备 7功率 P2， 具体工作如下： The main controller 8 and the collected power of the powered device 7 are based on the values of P0 and P1 described above, The specific work is as follows:
1、如果用电设备 7功率 P2连续半小时小于 3000W, 主控制器 8命令发 动机 1停机， 由 DC-DC转换器 4输出功率 P1 , 并且 P1=P2。  1. If the power device 7 power P2 is less than 3000W for half an hour, the main controller 8 commands the engine 1 to stop, and the DC-DC converter 4 outputs the power P1, and P1=P2.
2、如果用电设备 7功率 P2短时间 P2>P0时， 主控制器 8命令发电机组 额定功率 P0和 DC-DC转换器 4输出功率 P1同时供给用电设备 7功率 P2， 以满足用电设备 7功率 P2要求。 例如在通信基站启用空调时， 由发电机组 额定功率 P0和 DC-DC转换器 4输出功率 P1同时供给空调启动， 启动成功 后， 空调需要的功率将下降， 此时关闭 DC-DC转换器 4输出功率 Pl， 由发 电机组额定功率 P0供电。  2. If the power device 7 power P2 is short time P2>P0, the main controller 8 commands the genset rated power P0 and the DC-DC converter 4 output power P1 to simultaneously supply the power device 7 power P2 to meet the power device. 7 power P2 requirements. For example, when the communication base station enables the air conditioner, the rated power P0 of the genset and the output power P1 of the DC-DC converter 4 are simultaneously supplied to the air conditioner to start. After the startup is successful, the power required by the air conditioner will decrease, and the output of the DC-DC converter 4 is turned off. The power Pl is supplied by the genset rated power P0.
3、 在以上第 1项和第 2项中， 如发电机组额定功率 P0在满足用电设备 7功率 P2的条件下还有多余的功率， 则把多余的功率送给蓄电池组 3充电。  3. In the above items 1 and 2, if the rated power P0 of the generator set has excess power under the condition that the power P2 of the power-consuming equipment 7 is satisfied, the excess power is sent to the battery pack 3 for charging.

Claims

权 利 要 求 Rights request
1、通信基站用混合交流供电电源控制系统， 包括发动机（1 )、永磁发电 机（2)， 其特征是： 所述发动机（1 )、 蓄电池组 （3 )、 AC-DC转换器 （5)、 DC-DC转换器 （4)、 DC-AC转换器（6)及第一电流传感器 （9)分别与主 控制器 （8)相连接， 所述蓄电池组（3)连接 DC-DC转换器 （4)， DC-DC 转换器（4)与 DC-AC转换器（6)相连接，发动机（1 )连接永磁发电机（2), 永磁发电机 （2) 连接 AC-DC转换器（5 )， AC-DC转换器 （5 )与 DC-AC 转换器 （6) 相连接， DC-AC转换器（6)通过第一电流传感器 （9) 与用电 设备（7)相连接； 1. A hybrid AC power supply control system for a communication base station, comprising an engine (1) and a permanent magnet generator (2), characterized in that: the engine (1), the battery pack (3), and an AC-DC converter (5) The DC-DC converter (4), the DC-AC converter (6) and the first current sensor (9) are respectively connected to the main controller (8), and the battery pack (3) is connected to the DC-DC converter. (4), the DC-DC converter (4) is connected to the DC-AC converter (6), the engine (1) is connected to the permanent magnet generator (2), and the permanent magnet generator (2) is connected to the AC-DC converter. (5), the AC-DC converter (5) is connected to the DC-AC converter (6), and the DC-AC converter (6) is connected to the powered device (7) through the first current sensor (9) ;
所述主控制器（8)分别采集第一电流传感器（9)、蓄电池组（3)、 DC-DC 转换器（4)、 AC-DC转换器（5)及 DC-AC转换器（6) 的信号， 通过上述 采集的信号， 进行合理的功率分配；  The main controller (8) separately collects a first current sensor (9), a battery pack (3), a DC-DC converter (4), an AC-DC converter (5), and a DC-AC converter (6) Signal, through the above collected signals, for reasonable power distribution;
所述发动机 （1 ) 驱动永磁发电机（2)， 永磁发电机 （2) 经过 AC-DC 转换器 （5 )转换后的直流电压以及蓄电池组 （3 ) 由 DC-DC转换器（4)进 行升压的直流电压， 这两种直流电压通过 DC-AC转换器（6)转换为交流电 后与用电设备 （7) 相连接；  The engine (1) drives a permanent magnet generator (2), a permanent magnet generator (2), a DC voltage converted by an AC-DC converter (5), and a battery pack (3) by a DC-DC converter (4) The boosted DC voltage, which is converted to AC by a DC-AC converter (6) and connected to the powered device (7);
所述 AC-DC转换器 （5 ) 对永磁发电机 （2) 的输出进行可控整流， 通 过控制可控硅导通角来控制整流的电压；  The AC-DC converter (5) performs controllable rectification of the output of the permanent magnet generator (2), and controls the rectified voltage by controlling the conduction angle of the thyristor;
所述 DC-DC转换器 （4) 使蓄电池组 （3 ) 的电压升压， 并将升压后的 直流电压输出到 AC-DC转换器 （5) 的输出侧；  The DC-DC converter (4) boosts the voltage of the battery pack (3), and outputs the boosted DC voltage to the output side of the AC-DC converter (5);
所述 AC-DC转换器（5 ) 的输出侧的直流通过 DC-DC转换器（4) 向蓄 电池组 （3 ) 进行充电。  The DC on the output side of the AC-DC converter (5) is charged to the battery pack (3) through the DC-DC converter (4).
2、根据权利要求 1所述的通信基站用混合交流供电电源控制系统，其特 征在于所述 DC-DC转换器 （4) 为双向直流转换器。  A hybrid AC power supply control system for a communication base station according to claim 1, wherein said DC-DC converter (4) is a bidirectional DC converter.
3、根据权利要求 1所述的通信基站用混合交流供电电源控制系统，其特 征在于所述主控制器（8)通过导线分别与第一电流传感器（9)、第二电流传 感器（10)、 第三电流传感器 （11 )、 交流电压 （12)、 直流电压 （13)、 LCD 显示和用户操作按键（14)、发动机控制器（15)、蓄电池组温度传感器（16)、 蓄电池组电流传感器（17)、蓄电池组电压传感器（18)及 EEP-ROM保存数 据（19)连接。  The hybrid AC power supply control system for a communication base station according to claim 1, wherein the main controller (8) is respectively connected to the first current sensor (9) and the second current sensor (10) by wires, Third current sensor (11), AC voltage (12), DC voltage (13), LCD display and user operation button (14), engine controller (15), battery pack temperature sensor (16), battery pack current sensor ( 17), battery pack voltage sensor (18) and EEP-ROM save data (19) connection.
4、根据权利要求 3所述的通信基站用混合交流供电电源控制系统，其特 征在于所述发动机控制器 （15) 由芯片 （15-1) 通过导线分别与燃油量传感 器 （15-2)、 机油压力传感器（15-3)、 机油温度传感器 （15-4)、 水温传感器4. The hybrid AC power supply control system for a communication base station according to claim 3, wherein The engine controller (15) is connected to the fuel quantity sensor (15-2), the oil pressure sensor (15-3), the oil temperature sensor (15-4), and the water temperature sensor by the chip (15-1).
(15-5)、转速传感器（15-6)、启动马达继电器（15-7)、停机继电器（15-8)、 CAN通讯 （15-9) 及控制发动机转速的步进电机 （Ml) 连接， 控制发动机(15-5), speed sensor (15-6), starter motor relay (15-7), stop relay (15-8), CAN communication (15-9) and stepper motor (Ml) connection to control engine speed Control engine
(2) 运转。 (2) Operation.
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