High-voltage square-wave pulse power supply capable of accurately and continuously modulating frequency
A square wave pulse, high voltage technology, applied in the field of power supply, can solve the problems of difficulty in automatic frequency adjustment, poor stability, etc., and achieve the effect of stable output
Pending Publication Date: 2022-01-28
桂林赛盟检测技术有限公司
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Problems solved by technology
[0003] The present invention aims to solve the problem that the existing high-voltage square-wave pulse power supply is difficult to automatically adjust the frequency in a wide range and has poor stability, and provides a high-voltage square-wave pulse power supply with precise continuous frequency modulation
Method used
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[0010] 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 specific examples.
[0011] see figure 1 , a high-voltage square-wave pulse power supply with precise continuous frequency modulation, which consists of an air switch, a voltage regulator, a power frequency transformer, a rectifier filter, an IGBT full-bridge inverter unit, a square-wave pulse transformer, a human-machine interface, and an IGBT drive unit. The IGBT full-bridge inverter unit is composed of 4 FETs V1-V4. The IGBT driving unit is composed of a programmable controller, a dual dead zone generation circuit and 4 drivers.
[0012] The dual dead zone generation circuit is composed of 6 XNOR gates U1A-U1D, U2A-U2B, resistors R1-R2 and capacitors C1-C2. The two input terminals of the exclusive NOR gate U1A and one of the input terminals of the exclusive NOR gate U2A are connected to ...
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The invention discloses a high-voltage square-wave pulse power supply capable of accurately and continuously modulating frequency. The high-voltage square-wave pulse power supply consists of an air switch, a voltage regulator, an industrial frequency transformer, a rectifier filter, an IGBT full-bridge inverter unit, a square-wave pulse transformer, a human-computer interface and an IGBT driving unit, the IGBT full-bridge inverter unit is composed of four field effect transistors V1-V4; the IGBT driving unit is composed of a programmable controller, a double-path dead zone generating circuit and four drivers. The programmable controller outputs a square wave pulse signal with continuous, precise and adjustable frequency, two paths of complementary driving signals with dead zones are generated through the dead zone generation chip, and the complementary driving signals drive the inverter bridge composed of the high-power IGBT through the isolation driving chip, and therefore, the frequency can be automatically and continuously adjusted in a wide range of 1kHz-20kHz or can be stably output at a certain fixed frequency.
Description
technical field [0001] The invention relates to the technical field of power supplies, in particular to a high-voltage square-wave pulse power supply with precise continuous frequency modulation. Background technique [0002] The high-voltage square wave pulse power supply adjusts the grid voltage through a voltage regulator, isolates and boosts the transformer, rectifies and filters it into a DC voltage, and then uses four high-power IGBTs to form an inverter full bridge to invert the DC voltage into a square wave pulse. Voltage, the square wave pulse voltage is then stepped up to the required voltage value through the square wave pulse transformer. The high-voltage square wave pulse power supply is mainly used for the electrical life evaluation of the insulation structure of the frequency conversion motor used in the fields of motor traction, wind power generation, and new energy vehicles. During the test, the high-voltage square wave pulse power supply is regulated by th...
Claims
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Login to View More IPC IPC(8): H02M1/088H02M1/38H02M5/458H02M9/06
CPCH02M1/088H02M1/38H02M5/458
Inventor 钱三来刘志远蓝龙彪文裕苏义顶赵婕韦晨
Owner 桂林赛盟检测技术有限公司