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Method for controlling power-switching stable operation of air-conditioner unit of dual-powered trolley bus

An air-conditioning unit and operation control technology, applied in the field of control, can solve problems such as the inability to guarantee the cruising range of the vehicle and the consumption of large battery power

Active Publication Date: 2015-04-15
SUZHOU NEW TONGCHUANG AUTO AIR CONDITIONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the comfort of driving, the dual-drive trolleybus is equipped with an air-conditioning unit. When the vehicle is driving in the high-voltage overhead line network section, the power is sufficient, and the air-conditioning unit can perform high-frequency operation according to the temperature inside the car. When the vehicle is driving in a section without high-voltage overhead power grid, the vehicle is powered by the battery. At this time, the air-conditioning unit still maintains high-speed operation, which will consume a large amount of battery power and cannot guarantee the cruising range of the vehicle.

Method used

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  • Method for controlling power-switching stable operation of air-conditioner unit of dual-powered trolley bus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a control method for stable operation across power sources of a trolleybus air-conditioning unit with dual moving sources. A detection circuit for respectively detecting the first power source and the second power source and correspondingly forming the first power signal and the second power signal, a main logic control unit for receiving the first power signal and the second power signal and outputting a control signal, and An execution unit for receiving a control signal and performing an operation, the cross-power stable operation control method includes the following steps:

[0028] S1. The detection circuit continuously detects the power supply voltage of the line network and the battery power for n times, and when it is confirmed that the voltage is 阈值 , When the minimum power threshold 阈值, when the battery power ≤ the minimum power threshold, the main logic control unit outputs a forced shutdown high-level voltage signal and a forced en...

Embodiment 2

[0035] The rest are the same as in Embodiment 1, except that the main logic control unit is also electrically connected to a pedal switch for indicating the branching state of the high-voltage overhead line network, and the control method also includes the following steps:

[0036] S3. When the pedal switch is closed, the main logic control unit outputs a high-level voltage signal for forced unloading, and the air-conditioning unit will be forcibly unloaded; when the pedal switch is opened, the main logic control unit outputs a low-level voltage signal for forced unloading, and the air-conditioning unit restarts and returns S1.

[0037] When the power source trolleybus is running under the high-voltage overhead line network, when it is running to the branch line to change lanes, the driver will step on the pedal switch, the pedal switch is closed, and the main logic control unit outputs a high-level voltage signal for forced unloading. The air-conditioning unit will be forced ...

Embodiment 3

[0039] The rest is the same as that of Embodiment 1, except that the cross-power supply stable operation control method also includes the first step of the forced energy-saving control signal / forced shutdown control signal output by the main logic control unit when the air conditioner unit is turned on. An additional control logic, the first additional control logic includes the following steps:

[0040] S11. The frequency converter and the signal receiver read the forced energy-saving control signal and the forced shutdown control signal input by the main logic control unit;

[0041] S12. When the forced energy-saving control signal is a high-level voltage signal and the forced shutdown control signal is a low-level voltage signal, the air-conditioning unit enters the forced energy-saving operation state. If the original output frequency of the inverter is ≥f 阈值 , then the output frequency of the inverter is reduced to f 阈值 , otherwise, the inverter maintains the original ou...

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Abstract

The invention discloses a method for controlling power-switching stable operation of an air-conditioner unit of a dual-powered trolley bus. The method comprises the steps: S1, a detection circuit real-timely monitors the voltage of a network cable power supply and the electric quantity of storage batteries and transmits detection values to a main logic control unit; the main logic control unit sends high-level / low-level signals of forced energy-saving and forced shutdown and an air-conditioner unit enters a forced energy-saving status or a forced shutdown status according to each control signal; S2, under the forced energy-saving status, the detection circuit real-timely monitors the voltage of the network cable power supply and the electric quantity of the storage batteries and transmits the detection values to the main logic control unit; the main logic control unit controls the air-conditioner unit to keep the forced energy-saving status or enter the shutdown status or recover normal operation according to the detection value. The air-conditioner unit is operated according to the control signals transmitted by the main logic control unit; when the trolley bus is running by switching the power between a high-voltage overhead line network and a wireless network zone, the stable operation of the air-conditioner unit is maintained and the driving mileage of the electric vehicle is guaranteed sufficiently.

Description

technical field [0001] The invention relates to a control method, in particular to a control method for stable operation across power sources of an air-conditioning unit of a trolleybus with dual power sources. Background technique [0002] Double source trolleybus is a kind of public transportation that uses electricity to drive and does not rely on fixed rails on the road. The electricity it uses is generally obtained through overhead cables and collector poles on the car. On road sections, electricity is supplied by batteries for a short time. In order to ensure the comfort of driving, the dual-drive trolleybus is equipped with an air-conditioning unit. When the vehicle is driving in the high-voltage overhead line network section, the power is sufficient, and the air-conditioning unit can perform high-frequency operation according to the temperature inside the car. When the vehicle is driving in a section without high-voltage overhead power grid, the vehicle is powered b...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCB60H1/00735Y02T10/88
Inventor 王涛
Owner SUZHOU NEW TONGCHUANG AUTO AIR CONDITIONING
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