Device and method for dynamic characteristic measurement of IGBT

A technology with dynamic characteristics and output terminals, applied in the field of power electronic device measurement, it can solve problems such as lack of details, insufficient consideration of details, and measurement methods limited to theoretical analysis, achieving good reproducibility and high accuracy.

Active Publication Date: 2014-12-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology

However, at present, most of the double-pulse test circuits do not consider the details enough in the design, and do not give d...

Method used

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  • Device and method for dynamic characteristic measurement of IGBT
  • Device and method for dynamic characteristic measurement of IGBT
  • Device and method for dynamic characteristic measurement of IGBT

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Embodiment Construction

[0032] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. The present invention proposes a device for measuring the dynamic characteristics of an insulated gate bipolar transistor, such as figure 1 with figure 2 As shown, it mainly includes: voltage regulator, transformer, rectifier bridge, bus capacitor, discharge resistor, first relay, second relay, IGBT power module, protection circuit, load inductor, current sensor, shielding box, oscilloscope;

[0033]Among them, the input end of the voltage regulator is connected to the mains 220V, the output end of the voltage regulator is connected to the input end of the transformer through the first relay; the output end of the transformer is connected to the rectifier bridge; the output end of the rectifier bridge is connected in parallel with the bus capacitor, The direct current output by the rectifier bridge is used to charge the bus capacitor; the discharge resistor is co...

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Abstract

The invention belongs to the technical field of power electronic device measurement and particularly relates to a device and a method for dynamic characteristic measurement of an IGBT. The device mainly comprises a voltage regulator, a transformer, a rectifier bridge, a bus capacitor, a discharge resistor, a first relay, a second relay, a main control panel, an auxiliary control panel, a protection circuit, an IGBT power module, a load inductor, a current sensor, a shielding box and an oscilloscope. Firstly, the first relay is switched on, the second relay is disconnected, the voltage regulator is zeroed after being adjusted to be at the voltage to be detected, and the first relay is disconnected; secondly, electrification is implemented, and the oscilloscope obtains a dual-pulse signal, IGBT two-end voltages and collector electrode current waveforms. The crosstalk of different signals, interference of a space magnetic field on measured signals and other factors are excluded, high-accuracy dynamic process waveforms can be obtained, and the device and the method have good reproducibility on delay and overshoot of voltage and current signals. The load inductor with a tap enables the circuit to be adjustable, and the device and the method can be used for measurement of different devices.

Description

technical field [0001] The invention belongs to the technical field of power electronic device measurement, and in particular relates to a device and method for measuring the dynamic characteristics of an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, hereinafter referred to as IGBT). Background technique [0002] The progress of DC transmission technology and the development of power electronics technology make the research on the characteristics of power electronic devices more and more important. The characteristic research of IGBT includes static characteristic research and dynamic characteristic research, the static characteristic can often be obtained from the datasheet (data sheet), and the dynamic characteristic needs to be measured manually. In current national standards and IEC (International Electro technical Commission, International Electrotechnical Commission) standards, the measurement of dynamic characteristics is based on double-pulse ...

Claims

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Application Information

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IPC IPC(8): G01R31/26
Inventor 邹凯凯齐磊崔翔赵国亮宗波
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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