Symmetrical excitation coupling inductor voltage division auxiliary commutation inverter

A technology of coupled inductance and symmetrical excitation, which is applied to conversion equipment without intermediate conversion to AC, adjustment of electrical variables, high-efficiency power electronic conversion, etc., can solve the problems of high voltage stress, large transformer core volume, etc. Power density, cost reduction and EMI effects

Pending Publication Date: 2022-02-08
SHANXI UNIV
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  • Abstract
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Problems solved by technology

The transformer core cannot be reset within one switching cycle. The selected transformer core is bulky and requires two sets of auxiliary circuits to realize the auxiliary commutation work of the main switch under bidirectional current output; and the auxiliary commutation diode has no clamping measures, and the overcharge vibration Bells cause high voltage stress and EMI

Method used

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  • Symmetrical excitation coupling inductor voltage division auxiliary commutation inverter
  • Symmetrical excitation coupling inductor voltage division auxiliary commutation inverter
  • Symmetrical excitation coupling inductor voltage division auxiliary commutation inverter

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Embodiment Construction

[0102] In order to make the object, technical solution and advantages of the present invention more clear, 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 are only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative efforts shall fall within the protection scope of the present invention.

[0103] Such as figure 1 As shown, the present invention provides a symmetrical excitation coupled inductance voltage divider auxiliary commutation inverter, including a first main switching tube S 1 , the second main switch S 2 , the first auxiliary diode S a1 , the second auxiliary diode S a2 , the third auxiliary switch tube S a3 , the fourth auxiliary switch tube S a4 , Auxiliary commutat...

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Abstract

The invention discloses a symmetrical excitation coupling inductor voltage division auxiliary commutation inverter. The inverter realizes ZVS (Zero Voltage Suppressor) on and off of a main loop switch and ZCS (Zero Voltage Suppressor) on and off of an auxiliary loop switch. The coupling inductors of the auxiliary loop symmetrically and alternately excite, so that the excitation magnetic flux can be reset in two periods. The efficiency and the power density are effectively improved, and the cost and the EMI are reduced.

Description

technical field [0001] The invention relates to the technical field of power electronic conversion, in particular to a symmetrical excitation coupled inductance voltage division auxiliary converter inverter. Background technique [0002] Power factor correction PFC is usually used to improve power factor PF and reduce total harmonic distortion. Among many PFC circuits, Boost converters are widely used because of their simple structure, continuous input current and strong uniformity of characteristics. [0003] D.Divan proposed the first modern soft-switching converter in 1989: the active clamp resonant DC-Link inverter AC-RDCL. R. De Doncker proposed the auxiliary resonant commutated pole converter ARCP in 1990. In the originally proposed ARCP inverter, the commutation current pulse is generated by an auxiliary circuit composed of a DC-link DC bus capacitor, a bidirectional switch and a resonant inductor, that is, a capacitor voltage divider is used. The topology is simpl...

Claims

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Application Information

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IPC IPC(8): H02M3/04H02M3/158H02M7/44H02M7/537H02M1/42
CPCH02M3/04H02M3/158H02M7/44H02M7/537H02M1/4241H02M1/4225Y02B70/10
Inventor 禹健
Owner SHANXI UNIV
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