CN113890433B - Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage - Google Patents
Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage Download PDFInfo
- Publication number
- CN113890433B CN113890433B CN202111142907.8A CN202111142907A CN113890433B CN 113890433 B CN113890433 B CN 113890433B CN 202111142907 A CN202111142907 A CN 202111142907A CN 113890433 B CN113890433 B CN 113890433B
- Authority
- CN
- China
- Prior art keywords
- bridge
- excitation
- groups
- motor
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Rectifiers (AREA)
Abstract
本发明公开了一种通过提高母线电压保证容错发电功率的电励磁双凸极电机,涉及电励磁双凸极电机领域,该电励磁双凸极电机在励磁故障发生前,以传统不控整流发电方式进行发电,在励磁故障发生后,切换至故障发电模式,通过提高母线电压的方式使得电枢电流快速达到失磁故障容错发电运行所需电流参考值,使得在绕组励磁时可以具有较高的母线电压,从而实现快速励磁,大大的提高输出功率,提升了电机在失磁故障运行时的容错发电功率,提高了电励磁双凸极电机在各种环境下运行的可靠性,适合应用于航空航天、汽车等行业。
The invention discloses an electric excitation doubly salient motor capable of ensuring fault-tolerant power generation by increasing the busbar voltage, and relates to the field of electric excitation doubly salient motors. After the excitation fault occurs, switch to the fault power generation mode, and by increasing the bus voltage, the armature current can quickly reach the current reference value required for the loss-of-excitation fault fault-tolerant power generation operation, so that when the winding is excited, it can have a higher current value. bus voltage, so as to achieve rapid excitation, greatly improve the output power, improve the fault-tolerant power generation of the motor in the case of loss of field failure, and improve the reliability of the electric excitation doubly salient motor in various environments. It is suitable for use in aviation aerospace, automotive and other industries.
Description
技术领域technical field
本发明涉及电励磁双凸极电机领域,尤其是一种通过提高母线电压保证容错发电功率的电励磁双凸极电机。The invention relates to the field of electric excitation doubly salient motors, in particular to an electric excitation doubly salient motor which ensures fault-tolerant power generation by increasing the busbar voltage.
背景技术Background technique
电励磁双凸极电机是在开关磁阻电机基础上发展出来的一种新型无刷直流电机,其定子绕有电枢绕组和励磁绕组,转子上无绕组,结构简单可靠、控制灵活。其与开关磁阻电机主要区别在于定子上嵌有励磁绕组,由于励磁磁场的存在,作发电运行时,电励磁双凸极电机仅需外接不控整流桥进行发电,因而具有容错性能好、适用于恶劣工况的优点,同时当负载或转速变化时,通过调节励磁电流大小可维持输出电压恒定,控制十分灵活,在航空、风力发电等领域具有广阔的应用前景。Electric excitation double salient pole motor is a new type of brushless DC motor developed on the basis of switched reluctance motor. The stator is wound with armature windings and excitation windings, and there is no winding on the rotor. The structure is simple and reliable, and the control is flexible. The main difference between it and the switched reluctance motor is that the stator is embedded with an excitation winding. Due to the existence of the excitation magnetic field, the electric excitation doubly salient motor only needs to be connected to an uncontrolled rectifier bridge to generate electricity due to the existence of the excitation magnetic field, so it has good fault tolerance and is suitable for use. At the same time, when the load or speed changes, the output voltage can be maintained constant by adjusting the size of the excitation current, the control is very flexible, and it has broad application prospects in aviation, wind power generation and other fields.
励磁绕组的存在一方面增强了系统控制的灵活性,但另一方面也带来了安全可靠性问题。励磁绕组的老化、受潮、受热、受侵蚀等均可能对系统安全运行造成影响。此外,控制励磁所用的励磁功率电路也可能因为过流、反向电压冲击等原因造成故障,严重时将会导致整个系统失去励磁。如果电励磁双凸极发电机在运行过程中发生失磁故障,将会导致整个系统停止运行。The existence of the field winding enhances the flexibility of the system control on the one hand, but also brings about safety and reliability issues. The aging, moisture, heat, and corrosion of the excitation winding may affect the safe operation of the system. In addition, the excitation power circuit used to control the excitation may also fail due to overcurrent, reverse voltage shock, etc., and in severe cases, the entire system will lose excitation. If the electric excitation doubly salient generator has a loss of field fault during operation, it will cause the entire system to stop running.
目前,有关电励磁双凸极电机失磁故障的容错控制策略研究较少。现有技术包括:史立伟等公开的“电励磁双凸极电机励磁故障容错发电系统及其控制方法”(中国,授权日:2017年5月17日,授权号:CN104579067B)在三相全桥基础上添加冗余桥臂构成三相四桥臂变换器,通过给三相四桥臂变换器给每相交替通以正向和负向的励磁电流,实现电机励磁故障的容错发电功能。周兴伟等公开的“一种四相电励磁双凸极电机失磁故障容错发电方法”(中国,公开日:2017年5月22日,公开号:CN107147339A)通过添加一个冗余桥臂结合四相电机自感时刻随转子位置变换的特点提出一种新的控制方法,实现失磁故障容错发电。同时,温腾翔等公开的“电励磁双凸极电机励磁故障容错发电系统及其控制方法”(中国,公开日:2018年6月5日,公开号:CN108123646A)也提出了直接使用三相全桥变换器,通过控制功率变换器的开关管为每相提供正负交替的电流以实现失磁故障发电的功能,该方法无需增加新的桥臂,主功率电路结构简单,成本较低,发电角度较小,发电效率低。赵峰等公开的“电励磁双凸极电机失磁故障容错发电系统及其控制方法”(中国,公开日:2019年917日,公开号:CN110247597A)采用半桥进行控制,发电效率低。此外,王开淼等公开的“电励磁双凸极电机失磁故障容错发电系统及其控制方法”(中国,公开日:2019年3月8日,公开号:CN109450340A)提出了使用H桥变换器,该方法通过12个开关管将三相绕组独立开来,每相单独进行励磁和发电,效率相对较高。At present, there are few researches on the fault-tolerant control strategy for the loss-of-excitation fault of the electrically excited doubly salient motor. Existing technologies include: "Electrical excitation doubly salient motor excitation fault-tolerant power generation system and its control method" (China, authorization date: May 17, 2017, authorization number: CN104579067B) disclosed by Shi Liwei et al. Redundant bridge arms are added to form a three-phase four-bridge converter. By alternately passing positive and negative excitation currents to each phase of the three-phase four-bridge converter, the fault-tolerant power generation function of the motor excitation fault is realized. "A four-phase electric excitation double salient motor loss-of-excitation fault-tolerant power generation method" disclosed by Zhou Xingwei et al. (China, publication date: May 22, 2017, publication number: CN107147339A) by adding a redundant bridge arm to combine the four-phase A new control method is proposed because the self-inductance of the motor changes with the rotor position, so as to realize the fault-tolerant power generation due to the loss of magnetic field. At the same time, the "Electrically Excited Doubly Salient Motor Excitation Fault-tolerant Power Generation System and Its Control Method" published by Wen Tengxiang et al. (China, public date: June 5, 2018, public number: CN108123646A) also proposed the direct use of a three-phase full bridge The converter, by controlling the switching tube of the power converter, provides positive and negative alternating current for each phase to realize the function of power generation due to loss of field failure. This method does not need to add a new bridge arm, the main power circuit has a simple structure, low cost, and the power generation angle Small, low power generation efficiency. Zhao Feng et al. published "Electrically Excited Double Salient Pole Motor Loss of Field Fault Tolerant Power Generation System and Its Control Method" (China, Publication Date: 917, 2019, Publication No.: CN110247597A), which uses a half-bridge for control, resulting in low power generation efficiency. In addition, the "Electrical Excitation Doubly Salient Motor Loss of Field Fault Tolerant Power Generation System and Its Control Method" published by Wang Kaimiao et al. (China, publication date: March 8, 2019, publication number: CN109450340A) proposed the use of an H-bridge converter, This method separates the three-phase windings through 12 switching tubes, and each phase performs excitation and power generation independently, and the efficiency is relatively high.
上述提到的各种失磁容错发电控制拓扑虽然可以实现失磁故障的容错控制,但是在容错后都存在发电功率无法达到容错前的发电功率的问题。Although the above-mentioned various loss-of-excitation fault-tolerant power generation control topologies can realize the fault-tolerant control of the loss-of-excitation fault, there is a problem that the generated power cannot reach the generated power before the fault tolerance after the fault tolerance.
发明内容SUMMARY OF THE INVENTION
本发明人针对上述问题及技术需求,提出了一种通过提高母线电压保证容错发电功率的电励磁双凸极电机,进一步提高容错后都存在发电功率。本发明的技术方案如下:In view of the above problems and technical requirements, the present inventor proposes an electric excitation doubly salient motor that ensures fault-tolerant power generation by increasing the busbar voltage, and further improves the fault-tolerant power generation. The technical scheme of the present invention is as follows:
一种通过提高母线电压保证容错发电功率的电励磁双凸极电机,该电励磁双凸极电机包括控制器、凸极定转子结构、励磁电路、主功率电源、三组H桥变换器、负载R、负载储能电容C1、功率主开关S13以及升压电容C2;An electric excitation doubly salient motor that ensures fault-tolerant power generation by increasing the busbar voltage, the electric excitation doubly salient motor includes a controller, a salient pole stator and rotor structure, an excitation circuit, a main power supply, three groups of H-bridge converters, a load R, load energy storage capacitor C1, power main switch S13 and boost capacitor C2;
励磁电路连接凸极定转子结构中的励磁绕组,每组H桥变换器的两个桥臂的中间点分别连接凸极定转子结构中的一相电枢绕组的两端;The excitation circuit is connected to the excitation winding in the salient pole stator and rotor structure, and the middle points of the two bridge arms of each group of H-bridge converters are respectively connected to both ends of the one-phase armature winding in the salient pole stator and rotor structure;
主功率电源的正极通过二极管D13连接三组H桥变换器中各个桥臂的上开关管的集电极,主功率电源的负极连接三组H桥变换器中各个桥臂的下开关管的发射极;The positive pole of the main power supply is connected to the collector of the upper switch tube of each bridge arm in the three groups of H-bridge converters through the diode D13, and the negative pole of the main power supply is connected to the emitter of the lower switch tube of each bridge arm in the three groups of H-bridge converters ;
负载与负载储能电容并联并连接功率主开关S13的第一端,功率主开关S13的第二端通过二极管D14连接各个桥臂的上开关管的集电极,三组H桥变换器中各个桥臂的上开关管的发射极分别通过一个二极管连接到功率主开关S13的第二端,各个桥臂的下开关管分别反向并联一个二极管;The load is connected in parallel with the load energy storage capacitor and is connected to the first end of the power main switch S13, the second end of the power main switch S13 is connected to the collectors of the upper switch tubes of each bridge arm through the diode D14, and each bridge in the three groups of H-bridge converters The emitters of the upper switching tubes of the arms are respectively connected to the second end of the power main switch S13 through a diode, and the lower switching tubes of each bridge arm are respectively connected in reverse parallel with a diode;
升压电容并联在三组H桥变换器中各个桥臂的上开关管的集电极与各个桥臂的下开关管的发射极两端;The boost capacitor is connected in parallel with the collector of the upper switch tube of each bridge arm and the emitter of the lower switch tube of each bridge arm in the three groups of H-bridge converters;
控制器连接并控制励磁电路、三组H桥变换器以及功率主开关的通断:当电励磁双凸极电机正常工作时,控制功率主开关S13导通,三相电枢绕组通过三组H桥变换器中的二极管构成不控整流桥进行发电;当检测到电励磁双凸极电机出现励磁故障时,断开励磁电路,采用滞环控制来控制功率主开关S13的通断,使得升压电容的电压大于负载的负载电压以提升母线电压进行绕组励磁。The controller connects and controls the excitation circuit, the three groups of H-bridge converters and the on-off of the power main switch: when the electric excitation doubly salient motor is working normally, it controls the power main switch S13 to conduct, and the three-phase armature winding passes through the three groups of H The diodes in the bridge converter form an uncontrolled rectifier bridge to generate electricity; when the excitation fault of the electric excitation doubly salient motor is detected, the excitation circuit is disconnected, and the hysteresis control is used to control the on-off of the power main switch S13, so as to boost the voltage The voltage of the capacitor is greater than the load voltage of the load to boost the bus voltage for winding excitation.
本发明的有益技术效果是:The beneficial technical effects of the present invention are:
本申请公开了一种通过提高母线电压保证容错发电功率的电励磁双凸极电机,该电励磁双凸极电机在励磁故障发生前,以传统不控整流发电方式进行发电,在励磁故障发生后,切换至故障发电模式,通过提高母线电压的方式使得电枢电流快速达到失磁故障容错发电运行所需电流参考值,使得在绕组励磁时可以具有较高的母线电压,从而实现快速励磁,大大的提高输出功率,提升了电机在失磁故障运行时的容错发电功率,提高了电励磁双凸极电机在各种环境下运行的可靠性,适合应用于航空航天、汽车等行业。The present application discloses an electric excitation doubly salient motor that ensures fault-tolerant power generation by increasing the busbar voltage. The electric excitation doubly salient motor generates power in a traditional uncontrolled rectifier power generation method before the excitation fault occurs, and after the excitation fault occurs , switch to the fault power generation mode, by increasing the busbar voltage, the armature current can quickly reach the current reference value required for the demagnetization fault-tolerant power generation operation, so that the winding can have a higher busbar voltage during excitation, so as to achieve fast excitation, greatly It improves the output power of the motor, improves the fault-tolerant power generation of the motor when it runs in a loss of field fault, and improves the reliability of the electric excitation doubly salient motor in various environments. It is suitable for use in aerospace, automotive and other industries.
另外该电励磁双凸极电机采用三组H桥变换器有助于将各相绕组独立,不存在中点电位变化可能引起的电流缺口的问题,并且控制策略更为灵活。电机发电过程无需再与耗电相保持串联,减少了损耗,可以提高发电的效率,且除失磁故障容错功能外,还存在电枢绕组出现故障时,保持容错运行的可能性。In addition, the electric excitation doubly salient motor adopts three sets of H-bridge converters, which helps to separate the windings of each phase, there is no problem of current gap that may be caused by the change of the midpoint potential, and the control strategy is more flexible. The motor power generation process does not need to be connected in series with the power-consuming phase, which reduces the loss and improves the efficiency of power generation. In addition to the loss-of-excitation fault fault tolerance function, there is also the possibility of maintaining fault-tolerant operation when the armature winding fails.
附图说明Description of drawings
图1是本申请的电励磁双凸极电机的控制结构图。FIG. 1 is a control structure diagram of the electric excitation doubly salient motor of the present application.
图2是本申请的电励磁双凸极电机的控制逻辑示意图。FIG. 2 is a schematic diagram of the control logic of the electric excitation doubly salient motor of the present application.
具体实施方式Detailed ways
下面结合附图对本发明的具体实施方式做进一步说明。The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.
本申请公开了一种通过提高母线电压保证容错发电功率的电励磁双凸极电机,请参考图1,电励磁双凸极电机包括控制器、凸极定转子结构、励磁电路、主功率电源E、三组H桥变换器、负载R、负载储能电容C1、功率主开关S13以及升压电容C2。本申请中的功率主开关S13由一个开关管实现。The present application discloses an electrically excited doubly salient motor that ensures fault-tolerant power generation by increasing the bus voltage. Please refer to FIG. 1. The electrically excited doubly salient motor includes a controller, a salient pole stator and rotor structure, an excitation circuit, and a main power supply E. , three groups of H-bridge converters, load R, load energy storage capacitor C1, power main switch S13 and boost capacitor C2. The power main switch S13 in this application is implemented by a switch tube.
凸极定转子结构包括定子和转子,定子上安装有三相电枢绕组和励磁绕组Lf。励磁电路连接凸极定转子结构中的励磁绕组Lf,具体的,励磁电路包括励磁电源Uf以及H桥励磁变换器,励磁侧电源Uf连接H桥励磁变换器的直流侧,H桥励磁变换器的两个桥臂的中间点连接励磁绕组Lf的出线端。The salient-pole stator-rotor structure includes a stator and a rotor, and three-phase armature windings and excitation windings L f are installed on the stator. The excitation circuit is connected to the excitation winding L f in the salient pole stator and rotor structure. Specifically, the excitation circuit includes an excitation power supply U f and an H-bridge excitation converter. The excitation-side power supply U f is connected to the DC side of the H-bridge excitation converter, and the H-bridge excitation The middle point of the two bridge arms of the converter is connected to the outgoing end of the excitation winding L f .
每组H桥变换器的两个桥臂的中间点分别连接凸极定转子结构中的一相电枢绕组的两端,具体的,三相电枢绕组包括A相绕组La、B相绕组Lb和C相绕组Lc,第一H桥变换器连接A相绕组La,第二H桥变换器连接B相绕组Lb,第三H桥变换器连接C相绕组Lc。The middle points of the two bridge arms of each group of H-bridge converters are respectively connected to both ends of the one-phase armature winding in the salient-pole stator-rotor structure. Specifically, the three-phase armature winding includes an A-phase winding La and a B-phase winding L b and C-phase winding L c , the first H-bridge converter is connected to the A-phase winding L a , the second H-bridge converter is connected to the B-phase winding L b , and the third H-bridge converter is connected to the C-phase winding L c .
主功率电源E的正极通过二极管D13连接三组H桥变换器中各个桥臂的上开关管的集电极,主功率电源E的负极连接三组H桥变换器中各个桥臂的下开关管的发射极。The positive pole of the main power supply E is connected to the collectors of the upper switch tubes of each bridge arm in the three groups of H-bridge converters through the diode D13, and the negative pole of the main power supply E is connected to the lower switch tubes of each bridge arm in the three sets of H-bridge converters. emitter.
负载R与负载储能电容C1并联并连接功率主开关S13的第一端,功率主开关S13的第二端通过二极管D14连接各个桥臂的上开关管的集电极。三组H桥变换器中各个桥臂的上开关管的发射极分别通过一个二极管连接到功率主开关S13的第二端,各个桥臂的下开关管分别反向并联一个二极管。The load R is connected in parallel with the load energy storage capacitor C1 and is connected to the first end of the power main switch S13, and the second end of the power main switch S13 is connected to the collectors of the upper switch tubes of each bridge arm through the diode D14. The emitters of the upper switch tubes of each bridge arm of the three groups of H-bridge converters are respectively connected to the second end of the power main switch S13 through a diode, and the lower switch tubes of each bridge arm are respectively connected in parallel with a diode.
升压电容C2并联在三组H桥变换器中各个桥臂的上开关管的集电极与各个桥臂的下开关管的发射极两端。The boost capacitor C2 is connected in parallel with the collector of the upper switch tube of each bridge arm and the emitter of the lower switch tube of each bridge arm in the three groups of H-bridge converters.
三组H桥变换器的结构相同,每个H桥变换器包括分别由上开关管和下开关管反向串联构成的第一桥臂和第二桥臂,两个桥臂中的上开关管的集电极相连,第一桥臂中的上开关管的发射极通过一个二极管和一个电子开关连接功率主开关S13的第二端,第二桥臂中的上开关管的发射极通过一个二极管连接功率主开关S13的第二端;两个桥臂中的下开关管两端分别反向并联一个二极管。如图1所示,第一H桥变换器包括第一桥臂上的上开关管S1和下开关管S2以及第二桥臂上的上开关管S3和下开关管S4,第二H桥变换器包括第一桥臂上的上开关管S5和下开关管S6以及第二桥臂上的上开关管S7和下开关管S8,第三H桥变换器包括第一桥臂上的上开关管S9和下开关管S10以及第二桥臂上的上开关管S11和下开关管S12。二极管D2、D4、D6、D8、D10和D12依次分别并联在下开关管S2、S4、S6、S8、S10以及S12的两端,二极管的阳极连接对应的下开关管的发射极、阴极连接对应的下开关管的集电极。上开关管S1通过二极管D1和电子开关K1连接到S13,上开关管S5通过二极管D5和电子开关K2连接到S13,上开关管S9通过二极管D9和电子开关K3连接到S13。上开关管S3、S7和S11依次分别通过二极管D3、D7和D11连接到S13。The structures of the three groups of H-bridge converters are the same. Each H-bridge converter includes a first bridge arm and a second bridge arm respectively composed of an upper switch tube and a lower switch tube in reverse series connection, and an upper switch tube in the two bridge arms. The collector of the upper switch in the first bridge arm is connected to the second end of the power main switch S13 through a diode and an electronic switch, and the emitter of the upper switch in the second bridge arm is connected through a diode. The second end of the power main switch S13; the two ends of the lower switch tubes in the two bridge arms are respectively connected in reverse parallel with a diode. As shown in FIG. 1 , the first H-bridge converter includes an upper switch S1 and a lower switch S2 on the first bridge arm and an upper switch S3 and a lower switch S4 on the second bridge arm. The second H-bridge converts The converter includes an upper switch tube S5 and a lower switch tube S6 on the first bridge arm and an upper switch tube S7 and a lower switch tube S8 on the second bridge arm. The third H-bridge converter includes an upper switch tube on the first bridge arm S9 and the lower switch S10 and the upper switch S11 and the lower switch S12 on the second bridge arm. The diodes D2, D4, D6, D8, D10 and D12 are connected in parallel to the two ends of the lower switch tubes S2, S4, S6, S8, S10 and S12 respectively, and the anode of the diode is connected to the corresponding emitter and cathode of the lower switch tube. The collector of the lower switch tube. Upper switch S1 is connected to S13 through diode D1 and electronic switch K1, upper switch S5 is connected to S13 through diode D5 and electronic switch K2, and upper switch S9 is connected to S13 through diode D9 and electronic switch K3. The upper switch tubes S3, S7 and S11 are sequentially connected to S13 through diodes D3, D7 and D11, respectively.
控制器连接并控制励磁电路中各个开关管、三组H桥变换器中各个开关管以及功率主开关S13的通断。除此之外,该电励磁双凸极电机中还设置有各种传感器连接到控制器以获取各种参数值,具体的:位置传感器设置在凸极定转子结构中用于采集转子位置信号θ,励磁绕组Lf处设置电流传感器以采集励磁绕组电流if,三相电枢绕组分别设置电流传感器以采用三相相绕组电流ia、ib、ic,负载R处设置有电压传感器以采集负载电压U0,升压电容C2的正极设置电压传感器以采集升压电容的电压Uc2。The controller connects and controls the on-off of each switch tube in the excitation circuit, each switch tube in the three groups of H-bridge converters and the power main switch S13. In addition, the electric excitation double salient pole motor is also provided with various sensors connected to the controller to obtain various parameter values. Specifically, the position sensor is arranged in the salient pole stator and rotor structure to collect the rotor position signal θ , a current sensor is set at the excitation winding L f to collect the excitation winding current i f , the three-phase armature windings are respectively set with a current sensor to use the three-phase phase winding currents ia , ib , ic , and a voltage sensor is set at the load R to The load voltage U 0 is collected, and the positive electrode of the boost capacitor C2 is set with a voltage sensor to collect the voltage U c2 of the boost capacitor.
结合图1所示的结构,对该电励磁双凸极电机的工作过程介绍如下:Combined with the structure shown in Figure 1, the working process of the electric excitation doubly salient motor is introduced as follows:
电励磁双凸极电机正常工作时:当电流传感器未检测到励磁故障时,电励磁双凸极电机工作于发电机状态,控制器控制功率主开关S13导通,三相电枢绕组通过三组H桥变换器中的二极管构成不控整流桥进行发电。具体的,在图1中,控制器控制功率主开关S13持续导通,控制三组H桥变换器中所有上开关管和下开关管S1~S12均关断,控制三组H桥变换器中的三个电子开关K1、K2、K3均闭合,三相电枢绕组通过三组H桥变换器中的二极管D1~D12构成不控整流桥进行发电。When the electric excitation doubly salient motor is working normally: when the current sensor does not detect the excitation fault, the electric excitation doubly salient motor works in the generator state, the controller controls the main power switch S13 to conduct, and the three-phase armature winding passes through three groups of The diodes in the H-bridge converter form an uncontrolled rectifier bridge to generate electricity. Specifically, in FIG. 1 , the controller controls the main power switch S13 to be turned on continuously, controls all the upper and lower switches S1 to S12 in the three groups of H-bridge converters to be turned off, and controls the three groups of H-bridge converters in the The three electronic switches K1, K2 and K3 are all closed, and the three-phase armature windings form an uncontrolled rectifier bridge to generate electricity through the diodes D1-D12 in the three groups of H-bridge converters.
当电流传感器检测到励磁故障后,控制器控制断开励磁电路,切换到容错模式运行,采用滞环控制来控制功率主开关S13的通断,使得升压电容的电压Uc2大于负载的负载电压U0,可取Uc2>1.2U0,从而提升母线电压进行绕组励磁,使得绕组励磁可以具有较高的母线电压,从而实现快速励磁,增加输出功率。具体的在图1中,控制器控制三组H桥变换器中的三个电子开关K1、K2、K3均断开,采用滞环控制来控制功率主开关S13的通断,并采用相应的滞环环宽,本申请设定滞环环宽为0.5V。然后根据当前所处的电机电角度区间控制三组H桥变换器中相应的上开关管和/或下开关管的状态。具体控制策略如下,请参考图2所示的控制规律:When the current sensor detects the excitation fault, the controller controls to disconnect the excitation circuit, switch to the fault-tolerant mode operation, and use hysteresis control to control the on-off of the main power switch S13, so that the voltage U c2 of the boost capacitor is greater than the load voltage of the load U 0 , preferably U c2 >1.2U 0 , so as to increase the busbar voltage for winding excitation, so that the winding excitation can have a higher busbar voltage, thereby realizing rapid excitation and increasing output power. Specifically, in Fig. 1, the controller controls the three electronic switches K1, K2 and K3 in the three groups of H-bridge converters to be turned off, uses hysteresis control to control the on-off of the main power switch S13, and uses the corresponding hysteresis The ring width, the application sets the hysteresis ring width to 0.5V. Then, the states of the corresponding upper switch tubes and/or lower switch tubes in the three groups of H-bridge converters are controlled according to the current electrical angle range of the motor. The specific control strategy is as follows, please refer to the control law shown in Figure 2:
当电机电角度位于[0,θoff-120°)区间时,导通第三H桥变换器中第一桥臂的上开关管S9以及第二桥臂的下开关管S12,使得C相绕组处于励磁阶段;When the electrical angle of the motor is in the range of [0, θ off -120°), the upper switch S9 of the first bridge arm and the lower switch S12 of the second bridge arm in the third H-bridge converter are turned on, so that the C-phase winding is turned on. in the excitation phase;
当电机电角度位于[θoff-120°,θon)区间时,控制三个H桥变换器中所有开关管都处于断开状态,使得C相绕组开始发电;When the electrical angle of the motor is in the interval of [θ off -120°, θ on ), all switches in the three H-bridge converters are controlled to be disconnected, so that the C-phase winding starts to generate electricity;
当电机电角度位于[θon,θoff)区间时,导通第一H桥变换器中第一桥臂的上开关管S1以及第二桥臂的下开关管S4,使得A相绕组处于励磁阶段、C相绕组继续处于发电阶段;When the electrical angle of the motor is in the interval [θ on , θ off ), the upper switch S1 of the first bridge arm and the lower switch S4 of the second bridge arm in the first H-bridge converter are turned on, so that the A-phase winding is in excitation stage, the C-phase winding continues to be in the power generation stage;
当电机电角度位于[θoff,θon+120°)区间时,控制三个H桥变换器中所有开关管都处于断开状态,使得A相绕组开始发电;When the electrical angle of the motor is in the interval of [θ off , θ on +120°), all switches in the three H-bridge converters are controlled to be disconnected, so that the A-phase winding starts to generate electricity;
当电机电角度位于[θon+120°,θoff+120°)区间时,导通第二H桥变换器中第一桥臂的上开关管S5以及第二桥臂的下开关管S8,使得B相绕组处于励磁阶段、A相绕组继续处于发电阶段;When the electrical angle of the motor is in the interval [θ on +120°, θ off +120°), the upper switch S5 of the first bridge arm and the lower switch S8 of the second bridge arm in the second H-bridge converter are turned on, Make the B-phase winding in the excitation stage and the A-phase winding in the power generation stage;
当电机电角度位于[θoff+120°,θon+240°)区间时,控制三个H桥变换器中所有开关管都处于断开状态,使得B相绕组开始发电;When the electrical angle of the motor is in the interval of [θ off +120°, θ on +240°), all switches in the three H-bridge converters are controlled to be disconnected, so that the B-phase winding starts to generate electricity;
当电机电角度位于[θon+240°,360°)区间时,导通第三H桥变换器中第一桥臂的上开关管S9以及第二桥臂的下开关管S12,使得C相绕组处于励磁阶段、B相绕组继续处于发电阶段;When the electrical angle of the motor is in the range of [θ on +240°, 360°), the upper switch S9 of the first bridge arm and the lower switch S12 of the second bridge arm in the third H-bridge converter are turned on, so that the C-phase is turned on. The winding is in the excitation stage, and the B-phase winding continues to be in the power generation stage;
其中,θon表示电枢绕组励磁开通角,θoff表示电枢绕组励磁关断角,0°<θon<120°,120°<θoff<240°。Among them, θ on represents the armature winding excitation open angle, θ off represents the armature winding excitation off angle, 0°<θ on <120°, 120°<θ off <240°.
控制器在控制三组H桥变换器的开关管的状态的过程中,将输出电压与给定电压的误差进行PI调节得到给定电流,再将给定电流与当前被励磁的三相电枢绕组的电流进行PI调节得到相应占空比,若输出电压低于给定电压,则控制器根据得到的相应占空比对三组H桥变换器的开关管的占空比进行增大;若输出电压高于给定电压,则控制器根据得到的相应占空比对三组H桥变换器的开关管的占空比进行减小,以对三相电枢绕组的电流进行斩波控制而实现对输出电压的闭环控制。In the process of controlling the state of the switching tubes of the three groups of H-bridge converters, the controller adjusts the error between the output voltage and the given voltage by PI to obtain the given current, and then compares the given current with the currently excited three-phase armature. The current of the winding is adjusted by PI to obtain the corresponding duty cycle. If the output voltage is lower than the given voltage, the controller will increase the duty cycle of the switching tubes of the three groups of H-bridge converters according to the obtained corresponding duty cycle; if If the output voltage is higher than the given voltage, the controller reduces the duty cycle of the switching tubes of the three groups of H-bridge converters according to the obtained corresponding duty cycle, so as to control the current of the three-phase armature winding by chopping. To achieve closed-loop control of the output voltage.
以上所述的仅是本申请的优选实施方式,本发明不限于以上实施例。可以理解,本领域技术人员在不脱离本发明的精神和构思的前提下直接导出或联想到的其他改进和变化,均应认为包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought of by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111142907.8A CN113890433B (en) | 2021-09-28 | 2021-09-28 | Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111142907.8A CN113890433B (en) | 2021-09-28 | 2021-09-28 | Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113890433A CN113890433A (en) | 2022-01-04 |
CN113890433B true CN113890433B (en) | 2022-06-14 |
Family
ID=79007450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111142907.8A Active CN113890433B (en) | 2021-09-28 | 2021-09-28 | Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113890433B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114665771B (en) * | 2022-05-06 | 2023-04-11 | 西南交通大学 | Torque ripple suppression method for electro-magnetic doubly salient motor |
CN116015124B (en) * | 2022-12-20 | 2023-07-11 | 南京航空航天大学 | Loss-of-magnetic fault-tolerant power generation control method for optimizing copper consumption of electro-magnetic doubly-salient motor |
CN116247998B (en) * | 2023-03-02 | 2023-08-18 | 南京航空航天大学 | Current given control method for electrically excited doubly salient pole motor based on H-bridge power circuit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4896088A (en) * | 1989-03-31 | 1990-01-23 | General Electric Company | Fault-tolerant switched reluctance machine |
CN107026590A (en) * | 2017-04-20 | 2017-08-08 | 中国计量大学 | A kind of switching magnetic-resistance current transformer of wind-driven generator and its control method |
CN109450340A (en) * | 2018-11-12 | 2019-03-08 | 南京航空航天大学 | Electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity generation system and its control method |
CN109639214A (en) * | 2018-12-31 | 2019-04-16 | 武汉船用电力推进装置研究所(中国船舶重工集团公司第七二研究所) | A kind of polyphase machine is fault-tolerant to cut through transient process control method online |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109245660B (en) * | 2018-08-13 | 2020-12-11 | 南京航空航天大学 | A fault-tolerant drive system for a four-phase electric excitation doubly salient motor and its dynamic model establishment method |
-
2021
- 2021-09-28 CN CN202111142907.8A patent/CN113890433B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4896088A (en) * | 1989-03-31 | 1990-01-23 | General Electric Company | Fault-tolerant switched reluctance machine |
CN107026590A (en) * | 2017-04-20 | 2017-08-08 | 中国计量大学 | A kind of switching magnetic-resistance current transformer of wind-driven generator and its control method |
CN109450340A (en) * | 2018-11-12 | 2019-03-08 | 南京航空航天大学 | Electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity generation system and its control method |
CN109639214A (en) * | 2018-12-31 | 2019-04-16 | 武汉船用电力推进装置研究所(中国船舶重工集团公司第七二研究所) | A kind of polyphase machine is fault-tolerant to cut through transient process control method online |
Non-Patent Citations (2)
Title |
---|
Research on Fault Tolerance of DSEM Starting/Generating System;Jiaqi Zhao et al.;《2021 IEEE 4th International Electrical and Energy Conference (CIEEC)》;20210817;第1-7页 * |
四相电励磁双凸极电动机单相开路故障分析与容错控制策略;王兰凤 等;《电气工程学报》;20160131;第11卷(第1期);第39-46页 * |
Also Published As
Publication number | Publication date |
---|---|
CN113890433A (en) | 2022-01-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN113890433B (en) | Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage | |
CN109450340B (en) | The control method of the fault-tolerant power generation system for the loss-of-excitation fault of the electric excitation doubly salient motor | |
CN104579067B (en) | Excitation fault fault-tolerant power generation system of double-salient electro-magnetic motor and control method of system | |
CN102624297B (en) | Fault tolerance permanent magnet power generation system and control method thereof | |
CN103684127B (en) | A kind of combined type brushless DC start generator system and control method thereof | |
CN101582671B (en) | Power converter for switch reluctance starter/generator | |
Jiang et al. | A dual-winding fault-tolerant motor drive system based on the redundancy bridge arm | |
CN107979321A (en) | It is multiplexed the electric excitation biconvex electrode electric machine driving charging integration system of Exciting Windings for Transverse Differential Protection | |
CN110247597B (en) | Loss-of-excitation fault-tolerant power generation system for electrically excited double salient motor and its control method | |
CN113507252B (en) | An open-circuit fault-tolerant drive system for electrically excited doubly salient motor | |
CN113890434B (en) | Electro-magnetic doubly salient motor for realizing fault-tolerant control of excitation converter through dynamic switching | |
CN108123646B (en) | Electric excitation doubly salient motor excitation fault-tolerant power generation system and its control method | |
CN107147339B (en) | A fault-tolerant power generation method for four-phase electric excitation double salient pole motor loss of field failure | |
CN102522868A (en) | Double excitation-winding compound-excitation double-salient brushless direct-current generator | |
CN111342736A (en) | Variable winding driving system of switched reluctance motor and online soft switching method | |
CN109245660A (en) | The fault-tolerant drive system of four phase electric excitation biconvex electrode electric machines of one kind and its Dynamic Model method | |
CN115411852A (en) | A three-phase permanent magnet fault-tolerant motor and its fault-tolerant control system | |
CN115133844B (en) | A Fault-Tolerant Electric Operation Method Under Loss of Excitation Fault of Electrically Excited Doubly Salient Motor | |
CN101860210B (en) | Novel boost chopper cascade structure | |
CN209072382U (en) | Switched reluctance motor control system integrating drive and power battery charging | |
CN114487917A (en) | Fault diagnosis method for open circuit faults of power tubes and windings of electrical excitation doubly salient motor converters | |
CN109167551A (en) | A kind of H bridge automotive motor controller of integrated charge function | |
CN102223129A (en) | Controllable half-wave rectifier generating system for double-salient electro-magnetic motor | |
CN201091066Y (en) | Switching reluctance generator system apparatus | |
CN114865983B (en) | Three-phase alternating current speed regulation system for multiplexing excitation winding |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |