介绍了零电压谐振dc—dc变换技术，分析了谐振变换原理。
The technology of zero voltage resonant DC-DC transform is developed, the principle of resonant transform is presented.
采用谐振电路和PWM开关结合，组成电压谐振开关，实现DC—D C功率变换。
In order to make DC DC power converted, voltage resonant switch is combined by resonant circuit and switching PWM.
在对干式空心电抗器参数计算的基础上，提出了用脉冲电压谐振法进行电抗器匝间绝缘缺陷的检测。
Based on the parameter calculation of the air core reactor, this paper presents a pulse voltage resonance method to detect turn to turn insulation defects in air core reactors.
采用串联电压谐振产生高压起辉，必须采取过流保护措施。 电子镇流器高次谐波的产生及其所带来的危害。
We also should take protective measures for the volt power bright spots that produced by the series voltage resonance and the higher harmonic produced by the Electronic Ballast.
该晶片是一个压电谐振器，以精准而极高的频率对电压作出反馈，进行放大和收缩。
The wafer is a piezoelectric resonator, expanding and contracting in response to electrical voltages at a precise, extremely high frequency.
拥有更低峰值电流和场效应晶体管漏源极开通电压的800伏特准谐振设计展示出一次侧传导电磁干扰降低的优势。
The 800v quasi resonant design with lower current peak and lower drain-source voltage during turning on of the MOSFET demonstrates advantages in conducted EMI spectra regarding the primary side.
采用德国西门子IGBT变频，电压反馈串联谐振电路。变换效率高达97.5%以上。
Adopt IGBT frequency conversion of German Siemens and voltage feedback series resonance circuit. The conversion efficiency is reaching up to above 97.5%.
和600伏特设计比较，800伏特准谐振反激变换器的电压频谱在1兆赫兹以下更高一点，在1兆赫兹以上开始变小。
As it can be seen the voltage spectrum of the 800v quasi resonant flyback is higher at frequencies below 1 MHz, and is getting lower above 1 MHz compared to both 600v designs.
然后，在这一结论的基础上对原先的实验电路进行了结构的优化，使用软开关技术与谐振技术使输出电压、电流满足电源系统的基本要求。
Then we improve the circuit of the experiment based on the conclusion, make the current and voltage better using of the technology of soft switching and series resonance.
最后探讨了串联谐振式限流器对继电保护和电网过电压的影响。
Finally, the impact of series resonant current limiter on relay protection and over voltage in grid was explored.
内部过电压又称操作过电压或谐振过电压，对电气设备的安全运行和操作人员的人身安全构成严重威胁。
Internal overvoltage is called switching overvoltage or resonance overvoltage, and it threatens the safe operation of electrical equipment and the personal security of operating personnel.
7年的使用实践表明，直流脉动电压频率调制技术对抑制声谐振现象十分有效。
The7years 'applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances.
谐波谐振在电力系统中经常表现为高电压。
Harmonic resonance often manifests as high voltages in a power system.
并且通过串联阻尼电阻以限制调节过程中谐振引起的电压升高。
Meanwhile, the voltage rise caused by resonance in course of adjusting is controlled by series damping resistance.
提出一种采用控制简单的谐振极零电压过渡(RPZVT)软开关逆变器的异步电机直接转矩控制新方案。
A scheme of direct torque-control system of asynchronous machine with a simple Resonance Pole Zero Voltage Transfer (RPZVT) inverter is proposed.
注2：工作电压考虑了谐振电压。
NOTE 2 Working voltage takes into account resonant voltages.
对静电梳状驱动器的驱动电压—驱动力关系、结构刚度以及谐振频率进行计算。
The relationship of driving voltage and driving force, structural stiffness and resonant frequency of the electrostatic comb actuators are calculated.
谐振直流环节逆变器是一种零电压开关逆变器。
Resonant dc link inverter is a zero voltage switching inverter.
本文分析了谐振次数与电容器组容量、母线短路容量以及母线电压上升值之间的数学关系。
The equation is given which explains the relation between resonance frequency and capacitor bank capacitance, bus short-circuit capacitance and bus rising voltage value.
本文研制了一套在调频串联谐振电压下进行介质损耗因数测量的系统。
The author has developed a dissipation factor measuring system using the variable frequency series resonant voltage.
利用发射线圈与电容并联的谐振调幅电路，将线圈阻抗变化转换成电压的输出。
The emitting coil and capacitance are connected in parallel and form a resonant amplitude-modulation circuit, which converts the impedance into output voltage.
结果表明，相间电容不仅使谐振的概率增大，而且使谐振电压的幅值增加。
Results show that the capacitive coupling not only increases the possibility of ferroresonance, but also raises the amplitude of the resonant voltage.
概述了利用电容膜降低PWB噪声的方法，可以有效地降低电源-地线层之间的谐振和电源脉动电压。
This paper describes the method of Lowering PWB noise using condenser film, can lower resonance between the power supply layer and the ground layer and power supply ripple voltage effectively.
对于大功率的GTO逆变器，提出了一种零电压转换(ZVS)的三电平辅助谐振变换极逆变器(ARCPI)。
A zero-voltage-switching (ZVS) three-level auxiliary resonant commutated pole inverter (ARCPI) is presented for high power GTO ones.
电感电流断续工作的反激式变换器一次侧开关可工作于硬开关或准谐振(或谷值开关或零电压开关)模式。
The flyback converter running in discontinuous conduction mode can be operated in hard switching or quasi resonant (or valley switching, or ZVS) mode regarding the primary side switch.
在中低压电网中，PT断线、单相接地及由PT饱和引起的铁磁谐振均是多发性的故障，这些故障都能使电压异常。
PT breaking and ferro-resonance caused by single-phase grounding and PT saturation are common faults in medium-low voltage power networks, which make voltage abnormal.
论述了中性点绝缘系统中采用的三相防谐振电压互感器的原理与结构，并指出了运行中容易发生的接线错误。
The principle and structure of the resonance-proof three phase voltage transformer used in the neutral insulation system are discussed. The connection errors brought about in operation are presented.
该方法能有效控制铁磁谐振过电压从混沌状态转移到期望的周期轨道，实现系统状态在混沌和有序之间的转换。
The proposed method can effectively control the ferroresonance over voltage from the chaos to period orbit and implement the transformation of system status between chaotic and ordered situation.
基于输出电压表达式，还提出谐振开关电容变换器的频率控制方案。
A frequency control method for RSC converters was achieved based on the output voltage expression.
基于输出电压表达式，还提出谐振开关电容变换器的频率控制方案。
A frequency control method for RSC converters was achieved based on the output voltage expression.
应用推荐