A pulsed high voltage load circuit and its working method
A technology of load circuit and pulse high voltage, which is applied in the field of pulse high voltage load circuit, and can solve problems such as unsuitable for extended application, complex design of pulse transformer, poor operation safety, etc.
Active Publication Date: 2018-04-24
陕西夸克自控科技有限公司
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Problems solved by technology
[0004] The direct drive method uses high-voltage devices for circuit design, and solves the problem of high-voltage breakdown by increasing the withstand voltage value of the device. The characteristic of this solution is that the design is limited by the development of high-voltage devices, and there are certain limitations for the test environment of high-voltage power supplies. , and the operation security is relatively poor
The pulse transformer isolation drive mode adopts the multi-level power switch series connection mode, and the switch drive adopts the pulse transformer floating power supply mode. This method can easily solve the problem of high voltage isolation, but there are disadvantages such as complex design of pulse transformer, poor test waveform, and large measurement error. , not suitable for extended applications and high frequency occasions
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] refer to figure 1 ,like figure 1 A pulsed high-voltage load circuit shown includes: an isolated power supply, a dead zone complementary PWM generating unit, a high-end signal isolation unit, a low-end signal isolation unit, several high-end signal isolation drive units, several low-end signal isolation drive units and several switch module; the switch modules correspond to several high-end signal isolation drive units and several low-end signal isolation drive units; the isolated power supply is respectively connected to high-end signal isolation units, low-end signal isolation units, several...
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The invention discloses a pulse high-voltage load circuit and a working method, wherein a pulse high-voltage load circuit includes: an isolated power supply, a dead-zone complementary PWM generating unit, a high-end signal isolation unit, a low-end signal isolation unit, and several high-end signal isolation units A drive unit, several low-end signal isolation drive units and several switch modules. The present invention is used for the dynamic load capacity test equipment of high-voltage DC power supply. This series of equipment supports multi-channel pulse load, the resistance value, internal pulse frequency and duty cycle are adjustable, and supports external pulse synchronization test. The equipment has strong scalability and can Support testing at higher voltage and higher frequency.
Description
technical field [0001] The invention relates to a pulse high voltage load, in particular to a pulse high voltage load circuit and a working method. Background technique [0002] At present, a good pulse high-voltage load plays a pivotal role in the dynamic test of high-voltage power supplies. It is required to be able to withstand the impact of high-voltage power supplies while generating stable high-frequency load waveforms of equal amplitude. The performance of the pulsed high voltage load not only directly affects the test accuracy and reliability of the test equipment, but also has a certain impact on the safety of the equipment itself and the safety of the testers. [0003] According to the test scheme of the pulse high-voltage load box, there are mainly two types: multi-level drive mode and pulse transformer isolation drive mode: [0004] The direct drive method uses high-voltage devices for circuit design, and solves the problem of high-voltage breakdown by increasin...
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Inventor 刘超申俊杨涛
Owner 陕西夸克自控科技有限公司