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Multiphase converter auxiliary power reduction

A converter and auxiliary voltage technology, applied in the direction of converter type, high-efficiency power electronic conversion, output power conversion device, etc.

Active Publication Date: 2017-11-14
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is concerned with solving the problem that may be encountered in implementing multi-phase power conversion using a main AC-DC converter and a plurality of secondary AC-DC converters explained below, with one converter processing for the corresponding The electrical phase of the power conversion

Method used

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  • Multiphase converter auxiliary power reduction
  • Multiphase converter auxiliary power reduction
  • Multiphase converter auxiliary power reduction

Examples

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Embodiment Construction

[0019] Referring to the drawings, wherein like reference numerals designate like parts in the several views, figure 1 A schematic example electrical system 10 is shown having a direct current (DC) device 18 such as the illustrated rechargeable energy storage system (RESS) or a multi-cell battery pack, fuel cell or any other DC powered device. A DC device 18 may be electrically connected to a polyphase alternating current (AC) power source 12 using a charge port (CP) 17 and an AC-DC multi-converter device 14 (labeled AC-DC) of the type described below. AC power source 12 provides multi-phase voltage (VAC) to charging port 17 via cable 13, typically utilizing three phase wires and a fourth neutral / ground wire (not shown). For example, electrical system 10 may be embodied as or may be an integral part of a plug-in vehicle, wherein charging port 17 may be plugged into a wall outlet or charging station to charge DC device 18 when the vehicle is idling.

[0020] An AC-DC multi-conv...

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Abstract

An electrical system for use with an AC power supply having multiple phase voltages, e.g., three phase voltages, may include a high-voltage battery pack or other high-voltage DC device, a 12 VDC battery or other auxiliary-voltage DC device providing auxiliary power to the electrical system, multiple AC-DC converters, and a controller. The AC-DC converters each provide a DC output voltage to the high-voltage DC device, and are operable for converting a respective one of the phase voltages from the AC power supply into the DC output voltage. The controller selectively disables the AC-DC converters in response to a detected predetermined operating condition to thereby reduce consumption of the auxiliary power within the electrical system. A vehicle may include a high-voltage DC battery pack, an auxiliary-voltage DC battery providing auxiliary power, an onboard charging module, a charging port, an auxiliary power module, an electric machine, and a controller.

Description

technical field [0001] The invention relates to the reduction of auxiliary power consumption in electrical systems with multiphase converters. Background technique [0002] Electrical systems can utilize both alternating current (AC) and direct current (DC) power. For example, the powertrain of a battery electric or hybrid electric vehicle or other torque producing system typically includes one or more high voltage AC electric machines, each powered by a DC device such as a multi-cell battery pack or fuel cell. AC-DC converters are used in such systems to perform the required power conversion functions. For example, passive diode bridges and active controlled switching elements such as MOSFETS or IGBTs can be used to cancel the negative periods of the AC input waveform, and the resulting voltage output is then filtered to provide a DC output waveform. [0003] In some electrical systems using AC power, charging of DC battery packs or powering of DC devices may be accomplis...

Claims

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Application Information

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IPC IPC(8): H02M7/12B60L50/10
CPCH02M7/12H02M7/04H02M7/08B60L2210/40Y02T10/92Y02T10/7072Y02T10/70Y02T90/14B60L53/14B60L50/10B60L53/20B60L58/20Y02T10/72H02M1/0032H02M1/0048Y02B70/10Y02T90/12
Inventor J·A·瓦伦德尔D·S·赛瑟尔
Owner GM GLOBAL TECH OPERATIONS LLC
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