-
公开(公告)号：US11738653B2
公开(公告)日：2023-08-29
申请号：US16911353
申请日：2020-06-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Huibin Zhu , Heping Dai , Yongtao Liang , Weiping Liu , Feng Su , Shaohua Wang
CPC classification number: B60L53/24 , B60L53/22 , H02J7/02 , H02M3/33507 , H02M7/53875 , H02P27/06 , B60L2210/10 , B60L2210/40 , H02M1/007
Abstract: According to one aspect of the present disclosure, there is provided an apparatus that includes a battery, a Direct Current (DC) bus connected to the battery, and a DC to DC converter connected to the battery in parallel with the DC bus. A Motor Control Unit (MCU) is connected between the DC to DC converter and an electric motor. An Alternating Current (AC) port is connected to the electric motor. Switches connect the DC bus and an output of the DC to DC converter in series as an input to the MCU in a drive mode and disconnect the DC bus from the MCU in a charge mode.
-
公开(公告)号：US20220376513A1
公开(公告)日：2022-11-24
申请号：US17880497
申请日：2022-08-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaolin Mao , Heping Dai , Huibin Zhu , Dianbo Fu
Abstract: A direct current (DC) bus voltage from a combined output of a plurality of DC power modules is controlled based on an alternating current (AC) voltage of a power grid. The DC bus voltage tracks the AC grid voltage to provide efficient conversion between the DC power sources and the AC grid, even when the amplitude of the AC grid voltage varies. In one example, a variable reference voltage is generated based on a detected AC grid voltage. The reference voltage increases and decreases in proportion to increases and decreases in the AC grid voltage. In this manner, large differences between the bus voltage and the grid voltage are avoided. By closely tracking the two voltages, efficiency in the modulation index for power conversion can be achieved.
-
Search Results
12
records
(took 0.011 seconds)
