Three-phase and single-phase compatible MISN converter
A converter, three single-phase technology, applied in the direction of converting AC power input to DC power output, irreversible AC power input converting to DC power output, current collectors, etc. The problems of power density, inductance, and the large volume of the differential mode filter can improve the power density and reduce the volume.
Active Publication Date: 2022-06-24
ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
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Problems solved by technology
The disadvantage of the two-level scheme is that the volt-second inductance on the AC side is relatively large, which makes the inductance and the differential mode filter part larger, which limits the power density of the converter
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[0043]Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.
[0044] The present invention provides a three-single-phase compatible MISN converter, such as figure 1 shown, three-phase AC power Connected with the three-phase filter inductor L and the MISN module, the three-phase AC power supply A switch S is set between the three-phase filter inductor L and the three-phase filter inductor L respectively. a , S b , S c , the midpoint O and the three-phase AC power Connect switch ...
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The invention relates to a three-phase and single-phase compatible MISN converter which is characterized in that a three-phase alternating-current power supply is connected with a three-phase filter inductor L and an MISN module, switches Sa, Sb and Sc are arranged between the three-phase alternating-current power supply and the three-phase filter inductor L respectively, and a midpoint O and the three-phase alternating-current power supply are connected with a switch So and finally connected to a midpoint of a rectifier bridge composed of the switches S1, S2, S3, S4, S5 and S6; during three-phase operation, the circuit adopts a three-phase four-wire system connection method, and a three-phase neutral point is connected to the midpoint of a direct current output bus. The invention further relates to the diode rectification type three-phase and single-phase compatible MISN converter and a steady-state voltage calculation method of the diode rectification type three-phase and single-phase compatible MISN converter. And a three-single-phase compatible MISN converter of a controllable switch. According to the MISN converter, on the basis of a three-phase two-level six-switch (2L6B) topology, an MISN multi-level module is connected to an alternating current side inductor in series, the size of the inductor and the size of a filter can be effectively reduced, and the power density of the three-phase and single-phase compatible PFC converter is further improved.
Description
technical field [0001] The invention belongs to the field of charging converter structures, in particular to a three-single-phase compatible MISN (Modular Inductive Switching Network) converter. Background technique [0002] In recent years, with the rapid development of the new energy vehicle industry, the cruising range of pure electric vehicles (BEV) has continued to increase, and the charging power of vehicles has also gradually increased. Electric vehicles have two modes: DC fast charging and AC slow charging. DC fast charging directly charges the battery through public charging pile equipment. Due to the incomplete infrastructure construction at present, the convenience of DC fast charging is insufficient; AC slow charging is carried out through the on-board charger ( OBC) to charge the battery, and electric vehicles are directly connected to the power grid. Due to the low cost of AC charging piles and flexible construction, it is the main charging method for electric ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02M7/06H02M7/12H02M7/219H02M1/42H02J7/10
CPCH02M7/06H02M7/12H02M7/219H02M1/4216H02M1/4233H02J7/06H02J2207/20Y02T90/14
Inventor 吴新科赵问鼎
Owner ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT