Auxiliary power supply circuit, dumper power supply circuit and control method of dumper power supply circuit
A technology for auxiliary power supply and dump trucks, which is applied to the power supply of auxiliary motors, electric vehicles, and electric braking systems. Effects that are easy to engineer
Pending Publication Date: 2018-05-15
ZHUZHOU LINCE GRP
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- Application Information
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Problems solved by technology
[0002] In the dump truck power system composed of diesel engine-generator-converter-traction motor-braking resistor, almost all the electric braking energy is consumed in the form of heat through the braking resistor, resulting in a great waste of this part of energy , the utilization rate of braking energy is low
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Embodiment 1
[0022] like figure 2 As shown, this embodiment provides a dump truck power supply circuit, including a diesel engine, a generator and a converter connected in sequence, the converter includes a rectifier and an inverter, and the rectifier and the inverter are connected through an intermediate DC circuit; this implementation In the example, there are two inverters, which are respectively connected to the traction motor 1 and the traction motor 2; an auxiliary power supply circuit is also included. The auxiliary power supply circuit includes an inverter bridge H1 bridge, a transformer, a rectifier bridge H2 bridge, a capacitor C3 and an inverter module connected in sequence, and the input end of the inverter bridge is connected in parallel to the intermediate DC circuit of the dump truck converter. The above inverter module is connected to the cooling fan.
[0023] The braking resistor R1 and the braking resistor R2 are respectively connected in series with the chopper and the...
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The invention relates to the field of dumpers, and discloses an auxiliary power supply circuit, a dumper power supply circuit and a control method of the dumper power supply circuit. The auxiliary power supply circuit comprises an inverter bridge, a transformer, a rectifier bridge, a filter voltage-regulator capacitor and inverter modules, wherein the inverter bridge, the transformer, the rectifier bridge, the filter voltage-regulator capacitor and the inverter modules are connected in sequence; the input end of the inverter bridge is connected to an intermediate DC circuit of a converter in parallel, and the inverter modules are connected with cooling fans. By changing the design of the auxiliary power supply circuit, the fans are all powered by the intermediate DC circuit under the electric braking condition of a dumper, and energy of the intermediate DC circuit is completely from braking energy of an AC transmission system under the electric braking condition, so that the power supply circuit is easy to realize in engineering, greatly improves the energy utilization rate under the electric braking condition of the dumper, saves fuel oil, reduces emission, lowers noise and effectively improves the economic benefit.
Description
technical field [0001] The invention relates to the field of dump trucks, and more specifically, to an auxiliary power supply circuit, a dump truck power supply circuit and a control method thereof. Background technique [0002] In the dump truck power system composed of diesel engine-generator-converter-traction motor-braking resistor, almost all the electric braking energy is consumed in the form of heat through the braking resistor, resulting in a great waste of this part of energy , the utilization rate of braking energy is low. A converter usually includes a rectifier and an inverter, and the rectifier is connected to the inverter through an intermediate DC link. [0003] like figure 1 As shown, the traditional heat dissipation method of the dump truck is to use a large axial flow fan or two axial flow fans with the generator to provide cooling air for the traction motor, generator and converter, no matter in traction or braking. Under working conditions, the generat...
Claims
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Login to View More IPC IPC(8): B60L1/00B60L7/02B60L11/02B60L50/10
CPCB60L1/003B60L7/02B60L50/10Y02T10/72Y02T10/7072
Inventor 李昌奇阮志新眭铁杰邓姣艳肖为伟卜茂兴
Owner ZHUZHOU LINCE GRP