Delta Electronics (shanghai) Co., Ltd

Shanghai Boiler Works Co., Ltd.

Jianjun Ni

Liping Sun

Hongyang Wu

Chao Yan

Teng Liu

Jie Xiong

Zhen Xiang Yang

Nan Chen

Baochen Wang

A design method of a transformer repeats following steps until a preset condition is met: calculating an output voltage of each secondary winding according to a phase shift angle and a number of turns of the each secondary winding; obtaining a difference between output voltages of each secondary winding pair in a secondary winding set; adjusting the phase shift angle of at least one secondary winding in the secondary winding set; and obtaining a final number of turns for the each secondary winding according to a resultant phase shift angle corresponding to when the preset condition is met; where the preset condition is that the difference between the output voltages of any secondary winding pair in the secondary winding set is less than or equal to a preset threshold.

Method of transformer

A charging system includes a multi-pulse transformer, n AC-DC conversion units, n power supply terminals and a charging scheduling apparatus. A plurality of secondary windings of the multi-pulse transformer form n winding pairs. The n AC-DC conversion units are coupled to the n winding pairs in a one-to-one correspondence. The n power supply terminals are coupled to the n AC-DC conversion units in a one-to-one correspondence. The charging scheduling apparatus are configured to detect the number of charging devices and states of the power supply terminals, and determine M target winding pairs from the n winding pairs for supplying power to the charging devices. The M target winding pairs include a winding pair distributed close to a first end of the magnetic core and a winding pair distributed close to a second end of the magnetic core.

Charging system

The power supply device includes a first winding, a second winding, a third winding, a fourth winding, a first AC-DC conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal. The first and second windings are disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit. The first power supply terminal is coupled to an output of the first AC-DC conversion unit. The third and fourth windings are disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit. The second power supply terminal is coupled to an output of the second AC-DC conversion unit. Phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively shifted left or successively shifted right for 15&#xb0;.

Power supply device, charging system and charge scheduling method

The present invention demonstrates a solid fuel grade gasification-combustion dual bed poly-generation system, comprising a combustion system, a gasification system, a synthesized gas cooling and purifying system and a synthesized gas methanation system. The combustion system is connected with the gasification system through a circulating material return system. The gasification system mainly adapts the circulating fluidized-bed combustion mode. The gasification system adapts the fluidized-bed incomplete gasification method and the generated semi-coke is returned to the combustion system for re-utilization. The synthesized gas purifying and cooling unit adapts water cycling and combustible recycling. The by-products, COand steam, in the methanation unit can be recovered, so the maximum utilization rate of energy in this system is realized.

Solid fuel grade gasification-combustion dual bed poly-generation system and method thereof

Disclosed are a current sampling apparatus and a current sampling method for an isolated power converter. The isolated power converter includes a square wave generator, an isolated transformer, and a primary side filter circuit coupled therebetween. The current sampling apparatus includes: a first sampling circuit coupled to the primary side of the isolated transformer and sampling a total current of the primary side of the isolated transformer and outputting a first sampling current; and a shunt circuit receiving the first sampling current. The shunt circuit includes a first shunt branch circuit through which the first sampling current is transformed into an excitation sampling current and a second shunt branch circuit through which the first sampling current is transformed into a current to be sampled.

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Shanghai, China

Jianjun Ni