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- In the system,Intel 80C196MC is used as control center and IPM is used as an intelligent power device in the main circuit of AC DC AC voltage type inverter. 该系统以80C196MC为控制核心，采用IPM智能功率模块为功率元件，组成了交?直?交电压型逆变器主回路。
- PWM microelectronic c ontrol technique and AC DC AC DC invert technique with MOSFET half bri... 具有短接限流、限时衰减和恒流、恒压相结合的特点。
- The DC system is normally supplied from a battery charger system, which is supplied from the low voltage AC system. 直流系统通常由蓄电池充电系统供电,蓄电池充电系统由低压交流系统供电。
- As re-active power cannot be transmitted over DC lines, each AC system must supply the reactive power for the connected DC terminal. 由于无功功率不能通过直流线路输送,每个交流系统必须提供无功给所联接直流换流终端站。
- The battery chargers maintain a charge on the station batteries, which supply power to the DC system if the AC system fails. 蓄电池充电器持续对变电站蓄电池充电。若交流系统发生故障,就由直流系统供电。
- Comparing with 50Hz AC system and DC system, we can observe that the use of FFTS will bring a significant capital saving. 最后，对在我国应用分频输电系统的前景及经济效益进行了分析，结果表 明该系统的应用可以节约大量资金。
- The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when three phase unbalanced fault occurs in AC system. 当交流系统发生三相不对称故障时,忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
- Low Voltage AC system operating voltages from 120 to 600 VAC. 低压交流电系统中从120到600VAC的电压称为低压。
- Medium Voltage AC system operating voltages from 601 to 15000 VAC. 中压交流电系统中从601到15000VAC的电压称为中压。
- Voltage stabibity trends to be serious in high voltage DC system connected into a weak AC system, and it becomes more complicated in multi-infeed HVDC (MIDC) system. 连于弱交流系统的HVDC电压稳定问题严重，特别是在多馈入交直流系统中。
- DC motor speed to achieve the first to convert AC DC, which requires rectification circuit. 要实现直流电机调速首先要把交流电转换为直流，这就需要整流电路。
- The dc system is capable of rapid response to changes in control setting, with dc power transfer changes occurring faster than in AC systems. 由于直流传送功率的改变要快于交流系统,直流系统对控制整定值能迅速作出响应。
- Back to back HVDC system had been used to join AC systems. 背靠背高压直流输电(HVDC)系统已经在交流系统连网中得到了应用。
- Violent power oscillation will occur in independent AC DC combined power supply and may hamper the normal operation when the parameters of the generator and the DC motor load do not match. 交直流一体独立发电机系统在发电机和负载参数不满足一定条件时 ,会发生发电机和反电势负载之间的大幅度功率振荡 ,破坏系统的正常工作。
- Following up the change of some parameters in AC systems, it can regulate the active power transmitted by DC link and damp power oscillation in systems. 在交流系统受到扰动后它通过跟踪交流系统某些参数的变化来调节直流输送的有功功率，从而达到阻尼整个系统功率振荡的目的。
- Like your body, the air conditioning compressor is the heart of the AC system, and Freon is the blood. 像你的身体一样，空调压缩机是空调系统的心脏，氟里昂就是流动的血液。
- It is also used as a backup power for the ac system control and protection and for starting the APU. 同时也作为直流系统控制、保护及APU启动的备用直流电源。
- The 115 volt ac system is supplied by two engine driven generators, APU driven generator or external power. 115伏交流电源由两台发动机驱动的发电机、APU发电机或地面电源提供。
- A Novel PWM ZVS AC DC Converter with PFC 新颖的含PFC的PWM ZVS AC-DC变换器
- With the development of power grid, multi-infeed HVDC (MIDC) embedded in one AC system has emerged in south China power grid and east China power gird. 随着我国电网的发展，南方电网和华东电网出现了多馈入交直流系统。
