变压器

This topology, combining four switches with double half-wave rectifier and using variable frequency control mode with a refined small times together, achieves the effect of Zero Voltage Switching and the effect of Zero Current Switching by the resonance of resonant capacitance, resonant inductor and the magnetic inductor of the transformer.

该拓扑是一种四开关和双半波组合的结构，采用固定死区的互补调频控制方式，充分利用电路本身的特征，通过谐振电感、谐振电容和变压器的激磁电感谐振，实现零电压开关和零电流开关。

This topology, combining four switches with double half-wave rectifier and using variable frequency control mode with a refined small times together, achieves the effect of Zero Voltage Switching and the effect of Zero Current Switching by the resonance of resonant capacitance, resonant inductor and the magnetic .

该拓扑是一种四开关和双半波组合的结构，采用固定死区的互补调频控制方式，充分利用电路本身的特征，通过谐振电感、谐振电容和变压器的激磁电感谐振，实现零电压开关和零电流开关。

At present, ultra-high voltage test hall, the ultra-high voltage insulator arrester and tension is building laboratories, can simulate high altitude and filthy, Icing, artificial rainfall, and other special environmental conditions in UHV filthy and Environmental Laboratory has also started construction, UHV test transformer is already in place.

目前，特高压试验大厅、特高压避雷器和绝缘子试验室正紧张建设，可模拟高海拔、污秽、覆冰、人工降雨等特殊环境条件的特高压污秽及环境试验室也已动工建设，特高压试验变压器已经就位。

At present, ultra-high voltage test Hall Voltage Sensor , the ultra-high voltage insulator arrester and tension is building laboratories, can simulate high altitude and filthy, Icing, artificial rainfall, and other special environmental conditions in UHV filthy and Environmental Laboratory has also started construction, UHV test transformer is already in place.

目前，特高压试验大厅、特高压避雷器和绝缘子试验室正紧张建设，可模拟高海拔、污秽、覆冰、人工降雨等特殊环境条件的特高压污秽及环境试验室也已动工建设，特高压试验变压器已经就位。

It has a production area for assembling fluorescent and halogen lamps, transformer and other components.

她有着一套完善的针对荧光灯，卤素灯，变压器等灯具配件的组装体系。

A new method that applying the secondary harmonic ratio of restraint current to lock protection is put forward, with which the stability of differential protection could be enbanced.

提出了利用制动电流的二次谐波比进行闭锁的新方法，该方法可提高微机型变压器差动保护的可靠性。

This paper makes detailed analysis and simulation for applying this mode to reduce third harmonics.

并给出曲折变压器的选取原则和基本参数的确定方法。

Moreover, the transformer was filled up with the special resin and it has succeeded in a heat-resistant measure and miniaturization.

此外，变压器是充满了特殊树脂，它已成功地在耐热性措施和小型化。

Switching operations of disconnectors or circuit breakers in Gas Insulated Substation may generate very fast transient overvoltages, which are heinously detrimental to transformer and other power equipment.

摘 要：气体绝缘变电站中隔离开关等操作会产生特快速暂态过电压，这种过电压会对变压器等电力设备造成极大的危害。

The review includes:(1) magnetic sensor new materials;(2) hexagonal system microwave ferrite materials;(3) large capacity spin valve magnetic memories;(4) magnetic thin tape and film transforms;(5) large power application of ferrite materials.

其内容包括：(1)磁传感器新材料；(2)六角晶系微波铁氧体材料；(3)大容量自旋阀磁存储器；(4)磁薄带和磁薄膜变压器；(5)大功率应用的铁氧体材料。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。