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Apparatus and method for controlling a low-voltage DC converter for an environmentally friendly vehicle

A DC converter, low-voltage DC technology, applied in the direction of output power conversion device, control device, converter type, etc., can solve the problems of switching loss, noise, output ripple degradation, etc.

Active Publication Date: 2020-05-08
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are problems that zero-voltage switching (ZVS) may not be performed, causing switching loss, deteriorating output ripple, and causing noise in core type parts (such as transformers, inductors, etc.)

Method used

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  • Apparatus and method for controlling a low-voltage DC converter for an environmentally friendly vehicle
  • Apparatus and method for controlling a low-voltage DC converter for an environmentally friendly vehicle
  • Apparatus and method for controlling a low-voltage DC converter for an environmentally friendly vehicle

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Embodiment Construction

[0022] The above objects, features and advantages will become apparent from the detailed description described below with reference to the accompanying drawings. Therefore, those skilled in the art to which the present disclosure pertains can easily implement the technical idea of ​​the present disclosure. Also, in describing the present disclosure, in a case where it is judged that a detailed description of known technology related to the present disclosure may unnecessarily obscure the concept of the present disclosure, the description will be omitted. Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0023] figure 1 It is a configuration diagram of an apparatus for controlling a low-voltage DC-DC converter (LDC) of an eco-friendly vehicle according to an embodiment of the present disclosure. The LDC will be described by way of example.

[0024] like figure 1 As shown, the apparatus for...

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Abstract

The present invention relates to a device and a method for controlling a low-voltage DC converter of an environmentally friendly vehicle. The device includes: a reference current receiver receiving a reference current; a ramp signal generator generating a ramp signal by superimposing an input current of the LDC and a DC offset and a sawtooth wave for adjusting the slope of the ramp signal; and a comparator using the A pulse width modulation (PWM) signal is generated by referring to a reference current received by the current receiver and a ramp signal generated by the ramp signal generator.

Description

technical field [0001] The present disclosure relates to an apparatus and method for controlling a low-voltage direct current (DC)-DC converter (LDC) of an eco-friendly vehicle, and more particularly, to pulse width modulation for generating an LDC controlling an eco-friendly vehicle by binarization ( A technology that can improve the current control response characteristics (control performance) of a low-voltage DC-DC converter (LDC) even in a low-load environment with the slope of the ramp signal of the PWM) signal. Background technique [0002] An eco-friendly vehicle may include a high-voltage battery for providing driving power and an auxiliary battery for supplying electric power to electrical loads. Here, under the control of the upper controller, when the voltage of the auxiliary battery does not exceed the reference value, the low-voltage DC-DC converter (LDC) connected with the auxiliary battery and the electrical load can down-convert the voltage of the high batte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/00H02M1/14
CPCH02M1/14H02M3/00H02M1/0003B60L1/00B60L15/007B60L2210/12B60L2240/526B60L2240/527H02M3/3376Y02T10/64Y02T10/70Y02T10/7072Y02T10/72Y02T90/14B60L53/20H02M3/33546
Inventor 全信慧成玄旭张熙崇
Owner HYUNDAI MOTOR CO LTD