| 1. | Study of energy feedback snubber circuit in high power ipm three - level converter
大功率三电平变流器中的能量回馈型吸收电路 |
| 2. | In the first part , the operation of transformer and of lc loseless snubber is analyzed
工作原理部分分析了变换器中变压器的工作过程和无损吸收电路的工作原理。 |
| 3. | The realization of major loop will be given after ipm module is introduced . the absorption circuit of the module is selected according to the actual conditions
在主回路部分中通过对igbt的介绍给出了实现方案，并根据实际情况选择模块的吸收电路。 |
| 4. | High amplitude trigger pulse meets the power requirements of many thyristors connected in parallels . the voltage peak emerged in switching off inductance circuit is amortized by resistor and capacitor absorbed circuit
选取r = 54 ， c = 0 . 22 f的阻容缓冲吸收电路有效降低了快速晶闸管关断感性负载产生的过电压。 |
| 5. | The paper analyzed the dynamic process of series thyristor in detail and designed the snubber circuit and bod protecting circuit against over - voltage for thyristor . a pspice simulation mode of series thyristor based on dynamic process is set up and the simulation verifies the validity of the snubber circuit
论文详细分析了多个晶闸管元件串联工作的动态过程，设计了晶闸管的吸收电路和过压保护电路，建立了反映多个晶闸管元件串联工作动态过程的pspice仿真模型，并通过仿真分析验证了所设计电路的有效性。 |
| 6. | However these converters become more complicate . phase - shift zvs technique has been used in bidirectional dc / dc converters since it can realize zvs for all switches without auxiliary switches . however when the amplitude of input voltage is not matched with that of output voltage , the current stresses and rms currents of the converters become higher , in addition the converters can not achieve zvs under light - load condition
谐振、准谐振或多谐振技术方案，变换器的电压电流应力较高，变频控制增加了滤波器设计的难度；能量缓冲吸收电路或有源钳位电路方案，由于需要增加多个额外辅助元件，增加了变换器的复杂性；全桥相移技术方案，由于主电路无需增加额外元件，只需利用相移控制，即可实现软开关，因此引起关注。 |
| 7. | The emc of dc pwm power amplifier is analyzed and several measures to restrain the disturbances of pwm power amplifier are put forward . based on the pwm power amplifier in existence , the rcd snubber circuit experiment is carried out and the result shows that the rcd snubber circuit can restrain the voltage surge and the disturbances of dv / dt , di / dt
对直流pwm功率放大器的电磁兼容性进行了分析，提出了抑制pwm功率放大器干扰的几种措施；在现有的pwm功率放大器上做了rcd吸收电路实验，实验结果表明， rcd吸收电路能有效抑制电机两端电压浪涌和dv dt ， di dt引起的电磁干扰。 |
| 8. | Introduced the antijamming in the numerical control system design , from the shield ( including electric field shield , magnetic screen and electromagnetic field shield ) designs mentions , added the absorbing circuit to the perceptual load to suppress the transient state noise to give the specify , might avoid the numerical control system which disturbed creates " softly " the breakdown
摘要介绍数控系统中的抗干扰技术，对屏蔽（包括电场屏蔽，磁场屏蔽和电磁场屏蔽，正确的布线方式）和感性负载加吸收电路来抑制瞬态噪声做了详细说明，可避免干扰造成的数控系统的“软”故障。 |
