| 1. | It has self protective circuit
设自保护电路 |
| 2. | Also there are drive circuit and protective circuit designed in control system
控制电路中还设计了驱动电路和保护电路。 |
| 3. | Protective circuit is set internally for over heat , abnormal voltage to ensure safe operation
内置过热，电压异常保护电路，使用更安全。 |
| 4. | Test amp; measuring of leakage protective circuit breaker in electric distribution lines of housing projects
关于预应力混凝土管桩检测方法的探讨 |
| 5. | 3 . double closed - loop system for current and voltage , the protective circuits used to overvoltage , overcurrent , lack phase and water pressure , the closed - loop control for temperature can be achieved
3电流电压双闭环系统，带有过流，过压缺相，水压等保护，可实现温度闭环控制。 |
| 6. | The hardware control system based on tms320f240 is designed , which includes sampling circuit , protective circuit , phase - compensated circuit , keyboard & display circuit and so on
接着设计以tms320f240为控制核心的硬件控制平台，包括了采样电路、保护电路、相位补偿电路、键盘显示电路等外围电路。 |
| 7. | The hardware control system based on tms320lf2407a is designed , which includes sampling circuit , protective circuit , phase - compensated circuit , driving circuit and so on . the program of system is compiled
设计以tms320lf2407a为控制核心的硬件控制平台，包括了采样电路、保护电路、相位补偿电路、驱动等外围电路，在此基础上编制了程序软件。 |
| 8. | In the fourth chapter , the main circuit and control circuit are choosed according to performance target . the design course is detailedly introduce , including the design of assistant liner power circuit , main circuit , protective circuit and control circuit
在第四章中，根据产品所需要达到的性能指标，选择了主电路及控制电路，并详细介绍了方案的设计过程，包括辅助线性电源电路、主电路、保护电路以及控制电路的设计。 |
| 9. | The signal sampling circuit fulfill the tasks of sampling signal and changing the double polarities signal to the single polarity signal ; the drive circuit receives the pwm signals from dsp and pass the signals to ipm through optical - couple devices ; the protective circuit safeguard the system against high current , high voltage , low voltage and high temperature on the ipm model
其中信号处理电路主要完成采集输出电流和中间直流环节电压信号，并对采集到的电流信号进行极性变换处理的功能；驱动电路接收dsp输出的高频驱动信号，通过耦合器件直接驱动ipm模块；保护电路利用采集到电气信号对整个系统实施保护，包括过电流、过电压、欠电压、 ipm模块过热等。 |
| 10. | A zero - voltage starting method is brought forward which switch the starting from separate exciting to self - exciting successfully ; pll ( phase lock loop ) technology is employed to realize the frequency tracing and constant phase angle control ; igbt driving and protective circuit suitable for parallel inverter is developed , which successfully solve the problem of time compensating and overlapping regulation for the driving signals ; a novel and practical over - voltage protective method for parallel inverters is presented which effectively avoid the possible over - voltage destroy to the inverter . xu haiwen ( power electronics and electric driving ) directed by senior engineer peng yonglong
提出了一种零压启动的他激转自激方法；通过采用锁相环技术实现了逆变器工作频率的自动跟踪和容性逆变角度的恒值控制；设计了适用于并联谐振型逆变器的igbt驱动与保护电路，解决了驱动信号的时间补偿以及重叠角的可调问题；提出了一种新颖、实用的逆变器过压保护方法，有效地解决了并联型谐振逆变器过压保护这一难题。 |
