CN219458922U - High power factor bipolar pulse power supply suitable for dielectric barrier discharge - Google Patents
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Abstract
Description
技术领域technical field
本实用新型特别涉及一种适用介质阻挡放电的高功率因数双极性脉冲式供电电源。The utility model particularly relates to a high power factor bipolar pulse type power supply suitable for dielectric barrier discharge.
背景技术Background technique
介质阻挡放电(Dielectric Barrier Discharge,DBD)是通过两个金属电极之间的空气间隙中插入绝缘介质,在空气间隙中产生低温放电等离子体的气体放电现象。当DBD负载的高、低压电极之间施加交变的高压激励且达到击穿电压后,气隙中的气体将会被击穿进而在气隙中产生大量带电粒子。近年来,介质阻挡放电技术在臭氧气体生成、等离子体显示器以及航天等工业领域受到了广泛的应用。Dielectric Barrier Discharge (DBD) is a gas discharge phenomenon in which a low-temperature discharge plasma is generated in the air gap by inserting an insulating medium into the air gap between two metal electrodes. When the alternating high-voltage excitation is applied between the high and low voltage electrodes of the DBD load and the breakdown voltage is reached, the gas in the air gap will be broken down and a large number of charged particles will be generated in the air gap. In recent years, dielectric barrier discharge technology has been widely used in industrial fields such as ozone gas generation, plasma display and aerospace.
当介质阻挡放电负载结构及其放电气体的特性确定后,介质阻挡放电负载的放电性能就完全由供电电路的激励所决定。大量研究表明,相比于正弦激励,一个同时具有高电压上升率和间歇时间的高压脉冲激励不仅能提升负载的放电均匀性,而且能降低功耗产生更多的活性粒子从而大大提高DBD负载的工作性能。以级联式多电平电路、基于磁压缩原理的供电电源和基于Marx电路为代表的脉冲电路虽然能够实现负载激励的高上升率,但是应用到较高脉冲电压时,所需的电路级数增多,开关数量成倍增加,这将导致相应的触发电路以及隔离技术复杂化,系统可靠性大大降低。When the dielectric barrier discharge load structure and the characteristics of the discharge gas are determined, the discharge performance of the dielectric barrier discharge load is completely determined by the excitation of the power supply circuit. A large number of studies have shown that compared with sinusoidal excitation, a high-voltage pulse excitation with a high voltage rise rate and intermittent time can not only improve the discharge uniformity of the load, but also reduce power consumption and generate more active particles, thereby greatly improving the DBD load. work performance. Although pulse circuits represented by cascaded multilevel circuits, power supplies based on magnetic compression principles, and Marx circuits can achieve high rates of rise in load excitation, when applied to higher pulse voltages, the required number of circuit stages As the number of switches increases, the number of switches will increase exponentially, which will complicate the corresponding trigger circuit and isolation technology, and greatly reduce the reliability of the system.
因此,有必要设计一种适用介质阻挡放电的高功率因数双极性脉冲式供电电源,该供电电源不仅能为负载提供高上升率的激励,而且激励中含有间歇时间,能够充分发挥DBD负载的性能。双极性高频高压脉冲激励电压部分为电流源结构,有利于避免在DBD负载上出现不可控的电压尖峰。此外,该供电电源不仅能够在交流输入测实现功率校正,而且功率开关管Q1和Q2共地、驱动信号相同、相位差半个周期、均能实现软开关,因此该供电电源具有电路损耗低、结构简单、容易控制的特点。Therefore, it is necessary to design a high power factor bipolar pulsed power supply suitable for dielectric barrier discharge. This power supply can not only provide high rate of rise excitation for the load, but also contains intermittent time in the excitation, which can fully utilize the DBD load. performance. The bipolar high-frequency high-voltage pulse excitation voltage part is a current source structure, which is beneficial to avoid uncontrollable voltage spikes on the DBD load. In addition, the power supply can not only realize power correction in the AC input test, but also the power switch tubes Q1 and Q2 share the same ground, the drive signals are the same, and the phase difference is half a cycle, all of which can realize soft switching, so the power supply has circuit loss Low, simple structure, easy to control features.
实用新型内容Utility model content
本实用新型所要解决的技术问题是提供一种适用介质阻挡放电的高功率因数双极性脉冲式供电电源,该供电电源结构简单,容易控制,不仅能为负载提供双极性的高上升率的激励,还能够使得整个供电电源工作在高功率因数和低谐波失真的状态下。The technical problem to be solved by the utility model is to provide a high power factor bipolar pulse type power supply suitable for dielectric barrier discharge. Excitation can also make the entire power supply work in a state of high power factor and low harmonic distortion.
实用新型的技术解决方案如下:The technical solution of the utility model is as follows:
一种适用介质阻挡放电的高功率因数双极性脉冲式供电电源,其特征在于,包括:工频交流电源、第一二极管、第二二极管、第三二极管、第四二极管、第一电感、第二电感、第一功率开关管、第二功率开关管和升压变压器;所述交流电源的第一端分别与所述第一二极管的阳极及所述第三二极管的阴极连接;所述交流电源的第二端分别与所述第二二极管的阳极及所述第四二极管的阴极连接;所述第一二极管的阴极分别与所述第二二极管的阴极、所述第一电感的第一端及所述第二电感的第一端连接;所述第一电感的第二端分别与所述第一功率开关管的第二端及所述升压变压器的原边线圈的第一端相连;所述第二电感的第二端分别与所述第二功率开关管的第二端及所述升压变压器的原边线圈的第二端相连;所述升压变压器副边线圈与介质阻挡放电负载相连;所述第三二极管的阳极、所述第四二极管的阳极、所述第一功率开关管的第一端及所述第二功率开关管的第一端相连。A high power factor bipolar pulsed power supply suitable for dielectric barrier discharge, characterized in that it includes: a power frequency AC power supply, a first diode, a second diode, a third diode, a fourth and second Pole tube, first inductance, second inductance, first power switch tube, second power switch tube and step-up transformer; the first end of the AC power supply is respectively connected to the anode of the first diode and the first The cathodes of the three diodes are connected; the second end of the AC power supply is respectively connected to the anode of the second diode and the cathode of the fourth diode; the cathode of the first diode is respectively connected to the cathode of the fourth diode. The cathode of the second diode, the first end of the first inductance and the first end of the second inductance are connected; the second end of the first inductance is respectively connected to the first power switch tube The second end is connected to the first end of the primary side coil of the step-up transformer; the second end of the second inductance is respectively connected to the second end of the second power switch tube and the primary side of the step-up transformer The second end of the coil is connected; the secondary coil of the step-up transformer is connected to the dielectric barrier discharge load; the anode of the third diode, the anode of the fourth diode, the anode of the first power switch tube The first end is connected to the first end of the second power switch tube.
可选地,所述第一电感和所述第二电感数值相等。Optionally, the first inductance and the second inductance are equal in value.
可选地,所述第一功率开关管和所述第二功率开关管型号相同。Optionally, the first power switch tube and the second power switch tube are of the same type.
可选地,所述第一功率开关管和第二功率开关管的工作频率相等且所述第一功率开关管的驱动信号和所述第二功率开关管的驱动信号存在重叠时间。Optionally, the operating frequency of the first power switch tube and the second power switch tube are equal, and the driving signal of the first power switch tube and the driving signal of the second power switch tube have overlapping time.
可选地,所述第一功率开关管和所述第二功率开关管的工作频率相等且所述第一功率开关管的驱动信号和第二功率开关管的驱动信号的占空比相等且存在重叠区间;重叠区间由所述供电电源主回路参数与介质阻挡放电负载的参数共同决定,所述第一功率开关管的驱动信号和第二功率开关管的驱动信号的占空比一般不低于51%,且不高于60%。Optionally, the operating frequencies of the first power switch tube and the second power switch tube are equal, and the duty ratios of the drive signals of the first power switch tube and the drive signal of the second power switch tube are equal and exist Overlap interval; the overlap interval is jointly determined by the parameters of the main circuit of the power supply and the dielectric barrier discharge load, and the duty cycle of the drive signal of the first power switch tube and the drive signal of the second power switch tube is generally not less than 51%, and not higher than 60%.
可选地,所述第一功率开关管及所述第二功率开关管均为NMOS;其中第一功率开关管的第一端及第二功率开关管的第一端及均为NMOS的漏极,第一功率开关管的第二端及第二功率开关管的第二端均为NMOS的源极。Optionally, both the first power switch tube and the second power switch tube are NMOS; wherein the first end of the first power switch tube and the first end of the second power switch tube are both NMOS drains , both the second end of the first power switch tube and the second end of the second power switch tube are sources of NMOS.
有益效果:Beneficial effect:
(1).双极性高频高压脉冲激励电压生成部分能为DBD负载提供高升率和高下降率的双极性高频脉冲激励电压,且激励波形中含有间歇时间,这有利于DBD负载的性能提升。(1). The bipolar high-frequency high-voltage pulse excitation voltage generation part can provide DBD load with bipolar high-frequency pulse excitation voltage with high rise rate and high fall rate, and the excitation waveform contains intermittent time, which is beneficial to the DBD load. Performance improvements.
(2).双极性高频高压脉冲激励电压生成部分为电流源结构,有利于避免在DBD负载上出现不可控的电压尖峰。(2). The bipolar high-frequency high-voltage pulse excitation voltage generation part is a current source structure, which is beneficial to avoid uncontrollable voltage spikes on the DBD load.
(3).开关管Q1和Q2均能实现软开关,而且Q1和Q2共地,驱动电路实现简单,且Q1和Q2的驱动信号相同,相位相差180°,易于实现。(3). The switching tubes Q1 and Q2 can both realize soft switching, and Q1 and Q2 share the same ground, so the driving circuit is simple to implement, and the driving signals of Q1 and Q2 are the same, with a phase difference of 180°, which is easy to implement.
(4).实现了功率因数校正电路和负载激励电压生成电路的有机结合,在交流输入测提高了功率因数,减小了电路谐波。(4). The organic combination of the power factor correction circuit and the load excitation voltage generation circuit is realized, and the power factor is improved and the circuit harmonic is reduced in the AC input test.
(5).负载电压上升率不会被工作频率所影响,负载的电压波形也不会因为电路参数的变化而变化,该电路具有稳定性好、可靠性高的优点。(5). The load voltage rise rate will not be affected by the operating frequency, and the load voltage waveform will not change due to changes in circuit parameters. This circuit has the advantages of good stability and high reliability.
(6).该供电电源仅由一组整流桥、两个电感、两个开关管和一个升压变压器组成,结构简单。(6). The power supply is only composed of a set of rectifier bridges, two inductors, two switch tubes and a step-up transformer, with a simple structure.
附图说明Description of drawings
图1为实用新型公开的供电电源结构图。Fig. 1 is a structural diagram of a power supply disclosed in the utility model.
图2为介质阻挡放电负载等效模型图。Figure 2 is an equivalent model diagram of a dielectric barrier discharge load.
图3为双极性高频高压脉冲激励电压生成部分的等效电路图。Figure 3 is an equivalent circuit diagram of the bipolar high-frequency high-voltage pulse excitation voltage generation part.
图4为双极性高频高压脉冲激励电压生成部分的工作波形图。Figure 4 is a working waveform diagram of the bipolar high-frequency high-voltage pulse excitation voltage generation part.
图5为前半周期内各模态等效电路图。Figure 5 is the equivalent circuit diagram of each mode in the first half cycle.
图6为交流输入测的无源功率因数校正部分等效电路图。Figure 6 is an equivalent circuit diagram of the passive power factor correction part of the AC input test.
图7为交流输入测的无源功率因数校正部分工作波形图。Figure 7 is a working waveform diagram of the passive power factor correction part of the AC input test.
图8为给定参数下的一组负载电压电流波形图。Fig. 8 is a group of load voltage and current waveform diagrams under given parameters.
其中:其中,AC为工频交流电源,二极管D1-D4所组成的不可控整流桥与两个电感L1和L2构成无源功率因数校正部分,功率开关管Q1和Q2与两个电感L1和L2以及升压变压器T构成双极性高频高压脉冲激励电压生成部分。iDBD流经负载的电流,uDBD为DBD负载上的电压。Among them: Among them, AC is the power frequency AC power supply, the uncontrollable rectifier bridge composed of diodes D 1 -D 4 and two inductors L 1 and L 2 constitute the passive power factor correction part, and the power switch tubes Q 1 and Q 2 are connected with The two inductors L1 and L2 and the step-up transformer T constitute the bipolar high-frequency high-voltage pulse excitation voltage generating part. i DBD is the current flowing through the load, and u DBD is the voltage on the DBD load.
具体实施方式Detailed ways
为了便于理解本实用新型,下文将结合说明书附图和较佳的实施例对本实用新型做更全面、细致地描述,但实用新型的保护范围并不限于以下具体实施例。In order to facilitate understanding of the utility model, the utility model will be described more comprehensively and in detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the utility model is not limited to the following specific embodiments.
除非另有定义,下文中所使用的所有专业术语与本领域技术人员通常理解含义相同。本文中所使用的专业术语只是为了描述具体实施例的目的,并不是旨在限制本实用新型的保护范围。Unless otherwise defined, all technical terms used hereinafter have the same meanings as commonly understood by those skilled in the art. The terminology used herein is only for the purpose of describing specific embodiments, and is not intended to limit the protection scope of the present utility model.
实施例1:Example 1:
图1为本实用新型提出的适用介质阻挡放电的高功率因数双极性脉冲式供电电源拓扑结构图,包括:工频交流电源、第一二极管、第二二极管、第三二极管、第四二极管、第一电感、第二电感、第一功率开关管、第二功率开关管和升压变压器。所述交流电源的第一端分别与所述第一二极管的阳极及所述第三二极管的阴极连接;所述交流电源的第二端分别与所述第二二极管的阳极及所述第四二极管的阴极连接;所述第一二极管的阴极分别与所述第二二极管的阴极、所述第一电感的第一端及所述第二电感的第一端连接;所述第一电感的第二端分别与所述第一功率开关管的第二端及所述升压变压器的原边线圈的第一端相连;所述第二电感的第二端分别与所述第二功率开关管的第二端及所述升压变压器的原边线圈的第二端相连;所述升压变压器副边线圈与介质阻挡放电负载相连;所述第三二极管的阳极、所述第四二极管的阳极、所述第一功率开关管的第一端及所述第二功率开关管的第一端相连。Fig. 1 is a topological structure diagram of a high power factor bipolar pulsed power supply suitable for dielectric barrier discharge proposed by the utility model, including: a power frequency AC power supply, a first diode, a second diode, and a third diode Tube, fourth diode, first inductance, second inductance, first power switch tube, second power switch tube and step-up transformer. The first end of the AC power supply is respectively connected to the anode of the first diode and the cathode of the third diode; the second end of the AC power supply is respectively connected to the anode of the second diode connected to the cathode of the fourth diode; the cathode of the first diode is respectively connected to the cathode of the second diode, the first end of the first inductance and the first end of the second inductance connected at one end; the second end of the first inductance is respectively connected to the second end of the first power switch tube and the first end of the primary coil of the step-up transformer; the second end of the second inductance The terminals are respectively connected to the second terminal of the second power switch tube and the second terminal of the primary coil of the step-up transformer; the secondary coil of the step-up transformer is connected to a dielectric barrier discharge load; the third two The anode of the pole tube, the anode of the fourth diode, the first end of the first power switch tube and the first end of the second power switch tube are connected.
图3为双极性高频高压脉冲激励电压生成部分的等效电路图。其中,ICD1和ICD2分别是流经大电感L1和L2的电流等效而成的电流源,LS1和LS2分别为变压器的原边漏抗和副边漏抗,Lm为变压器励磁电感,变压器副边与原边的变比为N,Ce和Re分别为DBD负载等效电容和等效电阻,iDBD流经负载的电流,uDBD为DBD负载上的电压。Figure 3 is an equivalent circuit diagram of the bipolar high-frequency high-voltage pulse excitation voltage generation part. Among them, I CD1 and I CD2 are current sources equivalent to the current flowing through large inductors L 1 and L 2 respectively, L S1 and L S2 are the primary side leakage reactance and secondary side leakage reactance of the transformer respectively, and L m is The excitation inductance of the transformer, the transformation ratio between the secondary side and the primary side of the transformer is N, C e and Re e are the equivalent capacitance and equivalent resistance of the DBD load respectively, i DBD is the current flowing through the load, and u DBD is the voltage on the DBD load.
该部分的工作过程可分为前半周期和后半周期两部分,简述如下:前半周期中,开关管Q1和Q2同时导通,变压器处于短路状态,变压器的电感与负载形成谐振电路,变压器中储存的能量向DBD负载释放。在这一阶段中,由于变压器的漏抗和DBD负载的等效电容数值均很小,DBD负载电压急剧上升。此后,开关管Q1关断,直流电流源ICD1经变压器向负载提供能量,直流电流源ICD2仍为短路状态,由于变压器励磁电感很大,负载电压变化缓慢。后半周期的工作过程与前半周期的工作过程一样,但是在负载中生成的激励电压极性相反。图4为本实用新型提供的双极性高频高压脉冲激励电压生成部分的工作波形。The working process of this part can be divided into two parts: the first half cycle and the second half cycle, which are briefly described as follows: in the first half cycle, the switching tubes Q1 and Q2 are turned on at the same time, the transformer is in a short circuit state, and the inductance of the transformer and the load form a resonant circuit. The energy stored in the transformer is released to the DBD load. In this stage, since the leakage reactance of the transformer and the equivalent capacitance value of the DBD load are both small, the DBD load voltage rises sharply. Afterwards, the switching tube Q1 is turned off, and the DC current source ICD1 supplies energy to the load through the transformer. The DC current source ICD2 is still in a short-circuit state. Due to the large excitation inductance of the transformer, the load voltage changes slowly. The working process of the second half cycle is the same as that of the first half cycle, but the polarity of the excitation voltage generated in the load is opposite. Fig. 4 is the working waveform of the bipolar high-frequency high-voltage pulse excitation voltage generation part provided by the utility model.
具体的,本实用新型提供的双极性高频高压脉冲激励电压生成部分的半个工作周期可分为两个模态,即模态1(t0-t1)、模态2(t1-t2)。图5为本实用新型提供的双极性高频高压脉冲激励电压生成部分的半个工作周期中的两个工作模态的等效电路图。Specifically, the half working cycle of the bipolar high-frequency high-voltage pulse excitation voltage generation part provided by the utility model can be divided into two modes, namely mode 1 (t 0 -t 1 ), mode 2 (t 1 -t 2 ). Fig. 5 is an equivalent circuit diagram of two working modes in half a working cycle of the bipolar high-frequency high-voltage pulse excitation voltage generating part provided by the present invention.
这里设定功率开关管Q1和Q2的开关周期为T,占空比为D。两电感L1和L2值极大,开关管Q1和Q2以及二极管D1-D4均为理想开关器件。Here, the switching period of the power switch tubes Q1 and Q2 is set as T, and the duty cycle is D. The values of the two inductors L 1 and L 2 are extremely large, and the switching tubes Q 1 and Q 2 and the diodes D 1 -D 4 are all ideal switching devices.
由图5可得,模态1和模态2的约束方程分别为:From Fig. 5, the constraint equations of mode 1 and mode 2 are respectively:
将两个模态下初始值代入可得各模态下的电气量表达式分别为:Substituting the initial values in the two modes into the electrical quantity expressions in each mode can be obtained as follows:
当开关管Q2上的电流减小为0时,模态1结束,由此可得各模态持续时间及结束时刻的表达式:When the current on the switch tube Q2 decreases to 0, the mode 1 ends, thus the expressions of the duration and end time of each mode can be obtained:
式中,LS=LS2+LS1*N2,UL、UC和UR分别是等效电路中LS、Ce和Re上的电压,模态1负载电流初始值i0及UC初始值UC(t0)=u0,模态2初始值UC(t1)=u1,iDBD(t1)=i1=I,iDBD是流经负载的电流, In the formula, L S =L S2 +L S1 *N 2 , U L , U C and U R are the voltages on L S , Ce and Re in the equivalent circuit respectively, and the initial value of load current in mode 1 is i 0 And U C initial value U C (t 0 )=u 0 , mode 2 initial value U C (t 1 )=u 1 , i DBD (t 1 )=i 1 =I, i DBD is the current flowing through the load ,
电压峰值:Voltage peak:
由模态2可知,当DBD负载的谐振电流过零点时,DBD负载的电压达到其峰值Um,即:It can be seen from mode 2 that when the resonant current of the DBD load crosses zero, the voltage of the DBD load reaches its peak value U m , namely:
当电路参数,变压器和负载的参数确定后,模态1和模态2的谐振频率也就确定了,并不会因为开关周期的改变而改变,也和电感L1和L2的取值大小无关,与此同时也限制了开关频率和占空比的设定。考虑到DBD负载放电结束后所需的恢复时间TD,由此可以确定开关频率的范围:When the circuit parameters, transformer and load parameters are determined, the resonant frequency of mode 1 and mode 2 is also determined, and will not change due to the change of the switching cycle, and it is also related to the value of the inductance L 1 and L 2 It has nothing to do, and at the same time, it also limits the setting of switching frequency and duty cycle. Considering the recovery time T D required after the DBD load is discharged, the switching frequency range can be determined:
功率开关器件的驱动信号占空比的取值范围:The value range of the driving signal duty cycle of the power switching device:
图6为本实用新型提供的功率因数校正部分的等效电路图,需要指出的是这里电阻R为双极性高频高压脉冲激励电压生成部分及DBD负载的等效电阻,L=L1||L2,uin是交流输入电压,iin输入电流,iL是流经电感L1和L2的电流。图7为本实用新型提供的功率因数校正部分的工作波形图。可以求得:Fig. 6 is the equivalent circuit diagram of the power factor correction part provided by the utility model, it should be pointed out that the resistance R here is the equivalent resistance of the bipolar high-frequency high-voltage pulse excitation voltage generation part and the DBD load, L=L 1 || L 2 , u in is the AC input voltage, i in is the input current, and i L is the current flowing through the inductors L 1 and L 2 . Fig. 7 is a working waveform diagram of the power factor correction part provided by the present invention. can be obtained:
流经L的电流有效值:The effective value of the current flowing through L:
交流输入测的功率因数:Power factor measured by AC input:
等效电阻上消耗的功率:Power dissipated in equivalent resistance:
电路元件参数确定及电路拓扑控制的具体实现步骤如下,其中电路元件标号参见图1:The specific implementation steps of circuit component parameter determination and circuit topology control are as follows, where the circuit component labels refer to Figure 1:
1、离线测量出介质阻挡放电负载的等效电容Ce、等效电阻Re,以及介质阻挡放电负载的击穿电压Vth;1. Measure the equivalent capacitance C e and equivalent resistance R e of the dielectric barrier discharge load off-line, and the breakdown voltage V th of the dielectric barrier discharge load;
2、根据负载回路的谐振频率和介质阻挡放电负载所能承受的最高电压峰值Um确定升压变压器的参数和变比N。2. Determine the parameters and transformation ratio N of the step-up transformer according to the resonant frequency of the load circuit and the highest peak voltage U m that the dielectric barrier discharge load can withstand.
3、离线获得DBD负载放电时消耗的功率,推导出双极性高频高压脉冲激励电压生成部分的等效电阻。3. The power consumed when the DBD load is discharged is obtained offline, and the equivalent resistance of the bipolar high-frequency high-voltage pulse excitation voltage generation part is deduced.
4、根据等效电路的参数和无源功率因数矫正部分的要求确定第一电感L1和第二电感L2的数值。4. Determine the values of the first inductance L 1 and the second inductance L 2 according to the parameters of the equivalent circuit and the requirements of the passive power factor correction part.
5、根据负载参数和变压器参数确定的谐振频率来设定驱动脉冲的占空比,通常设置为53%,第一功率开关管的驱动脉冲比第二功率开关管的驱动脉冲滞后或超前半个周期。5. Set the duty cycle of the drive pulse according to the resonant frequency determined by the load parameters and transformer parameters, usually set to 53%, the drive pulse of the first power switch tube lags behind or leads the drive pulse of the second power switch tube by half cycle.
6、驱动脉冲的频率范围要根据负载电容和变压器电感所确定的谐振频率来设定,在频率和电路参数合适的情况下,第一功率开关管Q1和第二功率开关管Q2均能实现软开关。6. The frequency range of the drive pulse should be set according to the resonant frequency determined by the load capacitance and transformer inductance. When the frequency and circuit parameters are appropriate, both the first power switch tube Q1 and the second power switch tube Q2 can Implement soft switching.
根据上述的设计原则,下面给出了一组电路典型参数:According to the above design principles, a set of typical circuit parameters are given below:
交流电压AC:0-250V(可调);AC voltage AC: 0-250V (adjustable);
电感L1:10mH;Inductance L 1 : 10mH;
电感L2:10mH;Inductance L 2 : 10mH;
变压器T:额定频率125kHz,原边漏感LS11.4μH,副边漏感LS24.75mH,励磁电感Lm312μH、变压器原边与副边的匝数比N=9:450;Transformer T: rated frequency 125kHz, primary leakage inductance L S1 1.4μH, secondary leakage inductance L S2 4.75mH, excitation inductance L m 312μH, transformer primary and secondary turns ratio N=9:450;
驱动脉冲Pulse1:频率125kHz,占空比53%;Driving pulse Pulse1: frequency 125kHz, duty cycle 53%;
驱动脉冲Pulse2:频率125kHz,占空比53%,滞后Pulse1半周期;Driving pulse Pulse2: frequency 125kHz, duty cycle 53%, lagging Pulse1 half cycle;
这组参数下负载电压电流波形图如附图8所示。The waveform diagram of the load voltage and current under this set of parameters is shown in Figure 8.
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