逆电流

At resonance the tank current is real and in phase with the coupler transformer voltage, which is in phase with the inverter voltage.

谐振时，振荡器的电流和耦合变压器的电压同相，还有逆变器的电压。

The mathematical model of a dual three-level STATCOM which consists of two three-level inverters connected together through the inter phase transformer is presented by means of the switching function concept The dc-link voltage, output current, and output voltage waveforms of the STATCOM are analyzed.

利用开关函数的概念，建立了由2个三电平逆变器和1个输出耦合变压器构成的双三电平STATCOM的数学模型，并对其直流电压波形和交流侧输出电压和电流波形进行了仿真分析。

Mainly engaged in the project are: 1, lithium battery protection board, power type (power tools, electric vehicles, model aircraft) lithium battery protection board; 2, switching power supply, adapters, chargers; 3, high power audio, amplifier, communications power inverter power supply; 4, solar cells program, program charger, portable power supply; 5, special power supply / power supply, as well as smart power management system; 6, LED drivers, all kinds of high-frequency electronic circuit design, update problem-solving / Circuit Design and so on; Electronics 8514C has°load, four-channel Tektronix TDS2014B Oscilloscopes, Tektronix Current Probe, Power Instrument / high voltage tester, spectrum analyzer proposed, frequency meter, signal generator, the high and low temperature environment for the control room and other advanced equipment and a group of highly professional and well-motivated research in science and technology, design professionals; have the ability to achieve all-round, the perfect integration services.

主要经营项目有：1、锂电池保护板、动力类（电动工具、电动车、航模）类锂电池保护板；2、开关电源、适配器、充电器；3、大功率音响、功放、通讯电源、逆变电源；4、太阳能电池方案、充电器方案、便携电源；5、特种电源/智能电源以及电源管理系统；6、LED驱动，各种高频电子电路的设计，更新解难/电路设计等；公司拥有艾德克斯8514C电子负载、泰克TDS2014B四通道示波器、泰克电流探头、功率仪/高压测试仪、频谱分析议、频率计、信号发生器、高低温环境控制室等先进设备和一批专业素质高、干劲十足的科研技术、设计人才；有能力做到全方位、一体化的完美服务。

The system simulation model is implemented in PSPICE. The steady-state simulation performance of SCLRM in both self-exciting operation mode and inverter feeding mode are studied, and the effect on the steady-state performance by the motor parameters and the driving mode are also simulated, verified by the experimental results.

建立了基于PSPICE的系统仿真模型，对SCLRM在自激方式和逆变器驱动方式下的稳态运行特性进行了仿真计算，分析了电机参数及驱动方式对稳态电压、电流及电磁转矩的影响。

Then the circumfluence R.M.S. compensation method is certified as the circumfluence suppressing scheme after the analysis of the current-averaging and circumfluence suppressing theory.Results of the algorithm validation for this parallel control scheme are also included.

此后建立了逆变器并联系统的数学模型，在对该系统分析负载电流均分原理和环流抑制原理的基础上，确立将环流有效值补偿波形调制比作为环流抑制策略，对该并联控制策略给出了算法验证结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。