Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Integrated multiple power conversion system for transport refrigeration units

A refrigeration system and subsystem technology, applied in household refrigeration devices, refrigerators, refrigeration components, etc., can solve problems such as the inability to allow the vehicle refrigeration system to stop working, the vehicle DC battery bus is not suitable for operating refrigeration components, and multi-power problems.

Active Publication Date: 2009-12-23
CARRIER CORP
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the vehicle motor is stopped, the vehicle battery charging system is no longer charging the DC battery, which makes the vehicle DC battery bus less suitable for operating cooling components
[0005] One problem is that the vehicle's cooling system cannot usually be allowed to shut down when the vehicle's engine is switched off
Another problem is that vehicle refrigeration systems typically require more power than air conditioning systems, and typically require several AC and DC power supplies of different voltages, each of the different refrigeration subsystems typically requiring a unique electrical subsystem to power them

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Integrated multiple power conversion system for transport refrigeration units
  • Integrated multiple power conversion system for transport refrigeration units
  • Integrated multiple power conversion system for transport refrigeration units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Definition: "Road Mode" is defined as the condition in which the engine of a refrigerated vehicle is running. "Standby mode" is defined as a condition in which the engine of the refrigerated vehicle is not running and an AC connection is made between the commercial AC grid and the refrigeration unit.

[0013] exist figure 1 One embodiment of an electrical subsystem 100 using an AC generator 110 is shown in FIG. When the power source is the vehicle engine, AC power (typically in the range from 150 to 400VAC) from the AC generator 110 can power the AC / AC converter 101 (electronic power module) during "road mode". The AC generator 110 may be an AC generator having a rotor winding and a stator winding, one of these windings being powered by DC current, or may be a conventional permanent magnet AC generator. AC generator 110 may also include an optional AC voltage regulator ( figure 1 not shown) to maintain a relatively constant AC voltage over the vehicle engine speed ra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an electrical subsystem to power a vehicle refrigeration system. The electrical subsystem includes an AC drive electrically coupled to a high voltage DC bus. The AC drive provides 'refrigeration compressor AC power' responsive to a cooling demand. The electrical subsystem also includes a 'low voltage DC bus'. The low voltage DC bus powers a plurality of low voltage refrigeration components including refrigeration fans. A microcontroller sets the compressor AC voltage and the compressor AC frequency. A method of preventing vehicle refrigeration system compressor stall includes the step of limiting the electrical AC power to the compressor such that the AC voltage does not droop causing a compressor stall. Also, an electrical subsystem for powering a compressor in a vehicle refrigeration system includes 'V / f' operating information for the compressor, and a microcontroller commands the AC voltage and the AC frequency to the compressor.

Description

technical field [0001] The present invention relates generally to vehicle electrical subsystems, and more particularly to vehicle electrical subsystems for powering a vehicle refrigeration system. Background technique [0002] Most motor vehicles, including trucks and buses, get their power from an internal combustion engine. The electrical power to run the various electrical systems on a vehicle is typically produced by a generator, which is mechanically driven by the engine. Typically, these generators have a rotor that is mechanically coupled to a drive belt driven by the engine. AC generators are the most common type of power generating device used in this application. [0003] The advent of electrical generators of all kinds has allowed vehicle air conditioning systems to operate on an electrical basis, as opposed to using engine-driven mechanical refrigeration compressors. One such early system is disclosed in US Patent No. 6925,826 to Hille et al. and assigned to C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B27/00F25B49/00
CPCB60H1/3222F25B2600/0253F25B27/00Y02T10/7083B60H1/00428B60L2250/16F25D29/003Y02T10/88
Inventor S·博维奥A·施通普夫
Owner CARRIER CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products