公开(公告)号：US20240170950A1

公开(公告)日：2024-05-23

申请号：US18504945

申请日：2023-11-08

Applicant: ABB Schweiz AG

Inventor： David Schaeffer ,  Kalle Huju ,  Manfred Sievers ,  Elisabeth Lindell ,  Simo Poyhonen ,  Jesper Magnusson ,  Marley Becerra

IPC: H02H7/26 ,  H01H33/59

CPC classification number: H02H7/268 ,  H01H33/596

Abstract: A drive system including: a DC bus, a plurality of power electronics devices, each including a capacitor, each power electronics device being connected to the DC bus in parallel with the other power electronics devices, and a plurality of arc suppressing devices, each being configured to short circuit the DC bus in case of an arcing fault on the DC bus.

公开(公告)号：US20180278142A1

公开(公告)日：2018-09-27

申请号：US15992991

申请日：2018-05-30

Applicant: ABB Schweiz AG

Inventor： Simo Poyhonen

IPC: H02M1/14

CPC classification number: H02M1/14 ,  H02M2003/1586

Abstract: A chopper assembly including at least two chopper units, and a controlling unit configured to generate a control signal for controlling an activation of the corresponding chopper unit in cycle. The activations of the at least two chopper units are controlled by the controlling unit to be either initially offset by a phase shift or adjusted to have a phase shift after a predefined time duration, the phase shift indicating a time difference between rising edges or between falling edges of respective pulses of different signals. The chopper assembly according to the present disclosure effectively mitigates the negative impact to various components within the circuit. Moreover, by controlling the duty cycles of the control signals, loads of each of the resistors will be equal.