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Power source system with output characteristic adjusting circuit

A technology of power supply system and output characteristics, applied in the direction of control/regulating system, regulating electrical variable, output power conversion device, etc. instability, etc.

Active Publication Date: 2018-11-23
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When you want to continue to adjust the voltage and current to make the output power adjustable range wider, the output power of the magnetron will be unstable due to the low or high rise rate of the output pulse of the high voltage power supply.
[0004] In addition to the magnetron microwave system, klystrons or electron tubes have certain requirements for the voltage rise rate of the high-voltage power supply. Conventional high-voltage power supplies often cannot meet their needs, and it is necessary to pay a high price to increase the rise rate by changing the internal structure of the power supply.
At the same time, klystrons and electron tubes often have several different operating points, and the high-voltage power supply cannot meet the rising rate requirements of multiple operating points at the same time.

Method used

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  • Power source system with output characteristic adjusting circuit
  • Power source system with output characteristic adjusting circuit
  • Power source system with output characteristic adjusting circuit

Examples

Experimental program
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Effect test

no. 1 example

[0037] figure 1 It is the electrical principle diagram of the magnetron microwave system of the first embodiment of the present invention. refer to figure 1 As shown, the magnetron microwave system of this embodiment may include a power supply 10 , a magnetron 20 and an output characteristic adjustment circuit 30 . The power supply 10 and the output characteristic adjustment circuit 30 constitute a power supply system. The power supply 10 is connected to the magnetron 20 . The power supply 10 is a high-voltage power supply required by the magnetron, which can provide a voltage of the order of kV and a current of tens to hundreds of A. The output characteristic adjustment circuit 30 may have a first terminal N1 and a second terminal N2. The first terminal N1 is connected to a connection path between the power source 10 and the magnetron 20, and the second terminal N2 may be connected to a reference node, such as ground.

[0038] The output characteristic adjustment circuit...

no. 2 example

[0047] figure 2 It is the electrical principle diagram of the magnetron microwave system of the second embodiment of the present invention. refer to figure 2 As shown, the magnetron microwave system of this embodiment may include a power supply 10, a magnetron 20 and an output characteristic adjustment circuit 30a. The power supply 10 and the output characteristic adjustment circuit 30a constitute a power supply system. The power supply 10 is connected to the magnetron 20 . The power supply 10 is a high-voltage power supply required by the magnetron, which can provide a voltage of the order of kV and a current of tens to hundreds of A. The output characteristic adjustment circuit 30a may have a first terminal N1 and a second terminal N2. The first terminal N1 is connected to a connection path between the power source 10 and the magnetron 20, and the second terminal N2 may be connected to a reference node, such as ground.

[0048] The output characteristic adjustment cir...

no. 3 example

[0054] image 3 It is the electrical schematic diagram of the magnetron microwave system of the third embodiment of the present invention. refer to image 3 As shown, the magnetron microwave system of this embodiment may include a power supply 10, a magnetron 20 and an output characteristic adjustment circuit 30b. The power supply 10 and the output characteristic adjustment circuit 30b constitute a power supply system. The power supply 10 is connected to the magnetron 20 . The power supply 10 is a high-voltage power supply required by the magnetron, which can provide a voltage of the order of kV and a current of tens to hundreds of A. The output characteristic adjustment circuit 30b may have a first terminal N1 and a second terminal N2. The first terminal N1 is connected to a connection path between the power source 10 and the magnetron 20, and the second terminal N2 may be connected to a reference node, such as ground.

[0055] The output characteristic adjustment circui...

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Abstract

The invention provides a power source system. The power source system comprises a power source and an output characteristic adjusting circuit. The power supply is suitable for connecting a load, the output characteristic adjusting circuit is provided with a first end and a second end, the first end is connected to a connection path between the power supply and the load, and the second end is connected to a reference joint. The output characteristic adjusting circuit comprises an adjustable reactance assembly, and a reactance adjusting unit which is suitable for dynamically changing the reactance value of the adjustable reactance assembly according to a control signal. According to the power source system, the power source has a wider output power interval through adjusting output characteristics of output pulse.

Description

technical field [0001] The invention mainly relates to a power supply system, in particular to a power supply system with an output characteristic adjustment circuit. Background technique [0002] Microwave systems using magnetrons as a power source are widely used in radiotherapy accelerators, industrial irradiation accelerators, and radar systems. [0003] The existing magnetron microwave system changes the output microwave power within a relatively small range by changing the operating voltage and current of the high-voltage power supply. For example, a magnetron with a peak power of 3MW usually has an output power adjustable range of about 1MW, that is, the power range is 2MW to 3MW. When it is desired to continue to adjust the voltage and current to make the output power adjustable range wider, the output power of the magnetron will be unstable due to the low or high rise rate of the output pulse of the high voltage power supply. [0004] In addition to the magnetron ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCH02M3/1584
Inventor 张小锋刘世豪傅费超
Owner SHANGHAI UNITED IMAGING HEALTHCARE