WO2016082395A1 - Procédé et appareil de régulation de puissance - Google Patents

Procédé et appareil de régulation de puissance Download PDF

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Publication number
WO2016082395A1
WO2016082395A1 PCT/CN2015/075153 CN2015075153W WO2016082395A1 WO 2016082395 A1 WO2016082395 A1 WO 2016082395A1 CN 2015075153 W CN2015075153 W CN 2015075153W WO 2016082395 A1 WO2016082395 A1 WO 2016082395A1
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WIPO (PCT)
Prior art keywords
current
power
voltage
sampling
output
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PCT/CN2015/075153
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English (en)
Chinese (zh)
Inventor
王吉信
梁新春
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中兴通讯股份有限公司
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Publication of WO2016082395A1 publication Critical patent/WO2016082395A1/fr

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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

Definitions

  • the present invention relates to the field of communications, and in particular to a power control method and apparatus.
  • Multiplier scheme (as shown in FIG. 1), respectively sampling the output voltage and current, sending a constant power loop, and controlling the pulse width modulation technique (Pulse Width Modulation, referred to as PWM). Air ratio, adjust the output; can be realized by pure hardware, but the multiplier is higher in price and higher in cost; 2.
  • DSP digital signal processor
  • the embodiment of the invention provides a power control method and device to solve at least the problem that the constant power can not be effectively controlled in the related art.
  • a power control apparatus including: a current loop module, a voltage loop module, and a processing module, the current loop module configured to sample an output current of a power supply, and Sampling the sampled current output to the processing module; and receiving a reference current signal from the processing module, and adjusting an output current of the power supply according to the reference current signal; and/or the voltage loop module, setting And sampling the output voltage of the power supply, and outputting the sampled sampling voltage to the processing module; receiving a reference voltage signal from the processing module, and adjusting an output of the power supply according to the reference voltage signal
  • the processing module is configured to obtain a current output power according to the sampling voltage and/or the sampling current, and generate the reference according to a comparison result between the current output power and a preset constant power threshold.
  • the predetermined constant power threshold is a power value at which the power source maintains a constant power within a preset power range
  • the reference current signal and/or the reference voltage signal The power set to adjust the power source is maintained within the preset power range.
  • the current loop module includes: a current sampling circuit connected to the processing module, configured to sample an output current of the power source; and a compensation circuit connected to the current sampling circuit and configured to sample the sampled current Make compensation.
  • the current loop module further includes an operational amplifier circuit coupled to the current sampling circuit and the processing module, configured to perform amplification processing on the sampling current.
  • the voltage loop module includes: a voltage sampling circuit connected to the processing module, configured to sample an output voltage of the power supply; and a compensation circuit connected to the voltage sampling circuit and configured to sample the sampled voltage Make compensation.
  • the voltage loop module further includes an operational amplifier circuit coupled to the voltage sampling circuit and the processing module, configured to perform amplification processing on the sampling voltage.
  • the processing module is a single chip microcomputer.
  • a power control method comprising: a processing module acquiring a sampling voltage of a power supply output voltage and/or a sampling current of an output current; the processing module according to the sampling voltage and/or The sampling current obtains a current output power; the processing module generates a reference current signal and/or a reference voltage signal according to a comparison result between the current output power and a preset constant power threshold, wherein the preset constant power threshold is The power source maintains a constant power value within a preset power range, and the reference current signal and/or the reference voltage signal is used to adjust the power of the power source to remain within the preset power range; The reference current signal is sent to the current loop module and/or the reference voltage signal is sent to the voltage loop module.
  • the processing module acquiring the sampling current of the power output current includes: the processing module receiving the current after sampling the output current by the current sampling circuit and compensating the sampling current by the compensation circuit.
  • the method further includes: amplifying the sampling current by an operational amplifier circuit.
  • the processing module is a single chip microcomputer.
  • a current loop module is adopted, which is configured to sample the output current of the power supply, output the sampled sampling current to the processing module, and receive the reference current signal from the processing module, and adjust according to the reference current signal.
  • An output current of the power supply; and/or a voltage loop module configured to sample the output voltage of the power supply, output the sampled voltage to the processing module, and receive a reference voltage signal from the processing module, and based on the reference voltage signal Adjusting the output voltage of the power supply;
  • the processing module is configured to obtain the current output power according to the sampling voltage and/or the sampling current, and generate a reference current signal and/or a reference voltage signal according to a comparison result between the current output power and a preset constant power threshold
  • the preset constant power threshold is a power value at which the power source maintains a constant power within a preset power range, and the reference current signal and/or the reference voltage signal is used to adjust the power of the power source to be maintained within a preset power range.
  • FIG. 1 is a block diagram showing a principle of constant power control implemented by a multiplier in the related art
  • FIG. 3 is a block diagram showing the structure of a power control device according to an embodiment of the present invention.
  • FIG. 4 is a block diagram 1 of a power control apparatus according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram 2 of a power control apparatus according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram 3 of a power control apparatus according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram 4 of a power control apparatus according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a power control method according to an embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of constant power control in accordance with an embodiment of the present invention.
  • a power control device configured to implement the above-described embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the power control apparatus includes: a current loop module 32, a voltage loop module 34, and a processing module 36, and a current loop module 32. And configured to sample the output current of the power supply, and output the sampled sampling current to the processing module 36; and receive the reference current signal from the processing module 36, and adjust the output current of the power supply according to the reference current signal; and/or the voltage
  • the loop module 34 is configured to sample the output voltage of the power supply, and output the sampled sampling voltage to the processing module 36; and receive the reference voltage signal from the processing module 36, and adjust the output voltage of the power supply according to the reference voltage signal;
  • the processing module 36 is configured to obtain a current output power according to the sampling voltage and/or the sampling current, and generate a reference current signal and/or a reference voltage signal according to a comparison result between the current output power and a preset constant power threshold, wherein the preset constant power is generated.
  • the threshold is a power value
  • the maximum current of the power supply output can be effectively adjusted, and the demand for the constant power of the load is ensured.
  • the current loop module 32 includes a current sampling circuit 322 connected to the processing module 36 and configured to sample the output current of the power supply.
  • the compensation circuit 324 is connected to the current sampling circuit 322 and is configured to compensate the sampled current obtained by sampling. Thereby the sampling current is obtained.
  • FIG. 5 is a block diagram showing the structure of a power control apparatus according to an embodiment of the present invention.
  • the current loop module 32 includes an operational amplifier circuit 326 connected to the current sampling circuit 322 and the processing module 36, respectively. The sampling current is amplified.
  • the voltage loop module 34 includes a voltage sampling circuit 342 connected to the processing module 36 and configured to sample the output voltage of the power supply.
  • the compensation circuit 344 is coupled to the voltage sampling circuit 342 and configured to compensate the sampled voltage obtained by sampling.
  • the voltage loop module 34 further includes an operational amplifier circuit 346 connected to the voltage sampling circuit and the processing module, and configured as a pair. The sampling voltage is amplified.
  • processing module 36 is a microcontroller.
  • each of the foregoing modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are respectively located.
  • the first processor, the second processor, and the third processor In the first processor, the second processor, and the third processor.
  • FIG. 8 is a flowchart of a power control method according to an embodiment of the present invention. As shown in FIG. 8, the process includes the following steps:
  • Step S802 the processing module acquires a sampling voltage of the power output voltage and/or a sampling current of the output current
  • Step S804 the processing module obtains the current output power according to the sampling voltage and/or the sampling current
  • Step S806 the processing module generates a reference current signal and/or a reference voltage signal according to a comparison result between the current output power and a preset constant power threshold, wherein the preset constant power threshold is a power value at which the power source maintains a constant power within a preset power range.
  • the reference current signal and/or the reference voltage signal are used to adjust the power of the power source to be maintained within a preset power range;
  • Step S808 the processing module sends the reference current signal to the current loop module, and/or sends the reference voltage signal to the voltage loop module.
  • the processing module can effectively adjust the maximum current of the power output according to the preset constant power threshold, the sampling voltage and the sampling current, thereby ensuring the requirement of the load constant power.
  • the processing module can be a single chip microcomputer.
  • step S802 involves the processing module obtaining the sampling current of the power output current.
  • the current sampling circuit samples the output current of the power supply to obtain a sampling current; the compensation circuit compensates the sampling current, and the compensation result is obtained. Send to the processing module.
  • the current sampling circuit sampling the output current of the power supply further includes the amplifier circuit amplifying the sampling current.
  • the optional embodiment realizes the constant power adjustment of the output current within a certain range by the single-chip microcomputer, and the single-chip microcomputer also realizes other control and protection functions, and basically does not increase the cost; at the same time, the current limiting loop is realized by hardware, and the response is relatively fast. In some cases, the current limiting threshold is limited to a certain extent to ensure reliable operation; the invention achieves constant power control through a simple and reliable method.
  • the present alternative embodiment is implemented by the following means.
  • the optional embodiment provides a device for switching power supply output constant power control, the device includes: output voltage sampling, output current sampling, voltage loop (corresponding to the above voltage loop module), current loop (corresponding to the above current loop) Road module), constant power regulation.
  • the output voltage is sampled by a resistor divider to obtain an accurate proportional voltage.
  • the output current is sampled through a resistor or current sensor to obtain an output current. If the signal is weak, it can be appropriately amplified.
  • the voltage loop is the loop for output voltage regulation. It is realized by the op amp or chip TL431 (controllable precision voltage regulator source). By adjusting the voltage sampling and voltage reference, the duty cycle of the converter is adjusted to achieve the purpose of voltage regulation.
  • the current loop is compared with the output current and the reference, allowing the converter to operate in a constant current mode, allowing for certain voltage fluctuations.
  • FIG. 9 is a schematic block diagram of constant power control according to an embodiment of the present invention. Referring to FIG. 9, the implementation method of the alternative embodiment will be described in detail below.
  • R3 is the total output current sampling. After being amplified by the high-performance amplifier, it is sent to the input-end of the operational amplifier D1, compared with the current reference, and combined with the peripheral compensation network to form a current loop to realize the output constant current function;
  • the voltage sampling signal and the current sampling signal are simultaneously sent to the MCU (8-bit single-chip microcomputer PIC16F1829).
  • the single-chip microcomputer will do some control and protection processing, and at the same time set the power output power limit to ensure the constant power demand of the load, specifically through the PWM signal of the single-chip microcomputer.
  • the RC filter is converted into an analog level, the reference of the current loop is controlled, and the adjustment precision is also relatively high; the high-precision DAC is omitted to realize the digital-to-analog conversion.
  • the current reference can be properly clamped to ensure constant power within a certain range, and the current reaches Imax (see Figure 2).
  • the constant current threshold is no longer adjusted to ensure the reliability of the power supply.
  • the current loop and voltage loop op amp output control the COM pin of the PWM controller through the diodes VD1, VD2, and adjust the PWM signal of the DC-DC converter to achieve voltage regulation or constant current control.
  • Another multi-output power supply controls the total current and total power to ensure that the power output does not exceed the power and does not require separate control. Especially with the battery, the output voltage will be clamped by the battery. When the output voltage is fed by the battery, the constant current point is fixed, and the maximum output power will be reduced, which cannot meet the power supply requirement. This alternative embodiment can solve this problem. .
  • the MCU is a unit for controlling and protecting the power supply, and basically does not need other external chips, and can realize constant power control at the same time, avoiding the cost increase by using the multiplier.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • a power control method and apparatus provided by an embodiment of the present invention have the following beneficial effects: solving the problem that the constant power can not be effectively controlled in the related art, and achieving effective control of constant power is achieved. effect.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un procédé et un appareil de régulation de puissance. L'appareil comporte: un module (32) à boucle de courant, configuré pour échantillonner un courant de sortie d'une source de puissance, délivrer un courant échantillonné obtenu par échantillonnage à un module (36) de traitement, recevoir un signal de courant de référence provenant du module de traitement et régler le courant de sortie de la source de puissance en fonction du signal de courant de référence; et/ou un module (34) à boucle de tension, configuré pour échantillonner une tension de sortie de la source de puissance, délivrer une tension échantillonnée obtenue par échantillonnage au module de traitement, recevoir un signal de tension de référence provenant du module de traitement et régler la tension de sortie de la source de puissance en fonction du signal de tension de référence; et le module de traitement, configuré pour obtenir une puissance de sortie actuelle d'après la tension échantillonnée et/ou le courant échantillonné, et générer le signal de courant de référence et/ou le signal de tension de référence en fonction d'un résultat de comparaison entre la puissance de sortie actuelle et un seuil prédéfini de puissance constante. Le procédé et l'appareil de régulation de puissance réalisent la régulation efficace d'une puissance constante.
PCT/CN2015/075153 2014-11-24 2015-03-26 Procédé et appareil de régulation de puissance WO2016082395A1 (fr)

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CN108436233A (zh) * 2018-04-16 2018-08-24 单立军 一种电机控制电路及实现方法
CN110083194A (zh) * 2019-06-06 2019-08-02 西安拓尔微电子有限责任公司 一种可实现恒功率输出的电子烟的电路及其实现方法
CN112752374A (zh) * 2021-01-29 2021-05-04 广东东菱电源科技有限公司 电位器式恒功率电路、驱动电源及电源恒功率调节方法
CN112904925A (zh) * 2019-11-19 2021-06-04 杭州海康消防科技有限公司 负载驱动和保护电路
CN114189002A (zh) * 2020-09-15 2022-03-15 深圳英集芯科技股份有限公司 一种切换控制电路、充电芯片及电子装置和相关方法
CN116722741A (zh) * 2023-08-11 2023-09-08 湖南恩智测控技术有限公司 双向变换器的源载无缝切换方法、装置、设备及介质

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CN110165870B (zh) * 2018-02-14 2021-02-26 明纬(广州)电子有限公司 一种定功率控制电路
CN109195273B (zh) * 2018-10-26 2021-03-30 深圳市晟碟半导体有限公司 一种led灯具的恒功率控制装置及恒功率控制方法
CN113541286A (zh) 2020-04-20 2021-10-22 台达电子企业管理（上海）有限公司 移动式x射线机的自适应供电方法及高压发生装置
CN112445259B (zh) * 2020-11-17 2022-10-11 长春捷翼汽车零部件有限公司 电源稳压输出调节装置、方法及系统
CN116456528B (zh) * 2023-03-21 2023-11-03 江苏帝奥微电子股份有限公司 一种pwm调光控制系统及其方法

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Cited By (9)

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CN108436233A (zh) * 2018-04-16 2018-08-24 单立军 一种电机控制电路及实现方法
CN110083194A (zh) * 2019-06-06 2019-08-02 西安拓尔微电子有限责任公司 一种可实现恒功率输出的电子烟的电路及其实现方法
CN112904925A (zh) * 2019-11-19 2021-06-04 杭州海康消防科技有限公司 负载驱动和保护电路
CN112904925B (zh) * 2019-11-19 2022-07-29 杭州海康消防科技有限公司 负载驱动和保护电路
CN114189002A (zh) * 2020-09-15 2022-03-15 深圳英集芯科技股份有限公司 一种切换控制电路、充电芯片及电子装置和相关方法
CN112752374A (zh) * 2021-01-29 2021-05-04 广东东菱电源科技有限公司 电位器式恒功率电路、驱动电源及电源恒功率调节方法
CN112752374B (zh) * 2021-01-29 2024-04-09 广东东菱电源科技有限公司 电位器式恒功率电路、驱动电源及电源恒功率调节方法
CN116722741A (zh) * 2023-08-11 2023-09-08 湖南恩智测控技术有限公司 双向变换器的源载无缝切换方法、装置、设备及介质
CN116722741B (zh) * 2023-08-11 2023-10-24 湖南恩智测控技术有限公司 双向变换器的源载无缝切换方法、装置、设备及介质

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