Invention Grant
- Patent Title: Actuating three-phase inductive loads in the partial-load operating mode with reduced inverter switching losses
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Application No.: US17776744Application Date: 2020-09-24
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Publication No.: US11870380B2Publication Date: 2024-01-09
- Inventor: Illia Manushyn , Jochen Wessner
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Michael Best & Friedrich LLP
- Priority: DE 2019217688.7 2019.11.18
- International Application: PCT/EP2020/076682 2020.09.24
- International Announcement: WO2021/099012A 2021.05.27
- Date entered country: 2022-05-13
- Main IPC: H02P27/08
- IPC: H02P27/08 ; H02M7/5387

Abstract:
The invention relates to a method (100) for operating an inverter (1) which selectively connects each of three alternating current phases (U, V, W) of an inductive load (4) to the plus pole or minus pole of a direct current (2) provided at the input (1a) of the inverter (1) by actuating switching elements (3a-3f) arranged in three half bridges (5a-5c), wherein the switch states of the switching elements (3a-3f) are modified (110) by a rotating space vector modulation. Additionally, in the event of a modulation between space vectors (6a-6f) which have the same switch element (3a, 3d; 3b, 3e; 3c, 3f) switch states with respect to at least one half bridge (5a-5c), such a half bridge (5a-5c) remains completely deactivated (120).
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