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Charging machine control method

A control method and charger technology, which are applied in current collectors, electric vehicles, electrical components, etc., can solve the problem of large CPU expenses, and achieve the effects of improving power factor, reducing computing time, and reducing CPU expenses.

Active Publication Date: 2018-11-30
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the technical problem of large CPU expenditure when the existing charger is charged, and proposes a charger control method that can reduce the CPU expenditure

Method used

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Embodiment Construction

[0022] Hereinafter, specific embodiments of the present invention will be further described in conjunction with the accompanying drawings.

[0023] figure 1 and figure 2 As shown, a charger control method, the charger includes a three-phase bridge controllable rectification circuit, characterized in that it includes the following steps:

[0024] S1. Set the voltage at the output terminal of the charger as the output voltage, and the output voltage limit value is Vout_R,

[0025] Set the current at the output terminal of the charger as the output current, and the output current limit value is Iout_R,

[0026] Set the current flowing through the battery during charging as the charging current, and the charging current limit value is Ibat_R,

[0027] Setting the voltage at the output terminal of the PWM rectifier circuit to be an intermediate voltage, and the intermediate voltage limit value is Vdc_R;

[0028] S2. Detect the output voltage Vout, output current Iout, charging...

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Abstract

The invention relates to a charging machine control method. According to the charging machine control method, four parameters of the output voltage, the output current, the charging current and the intermediate voltage are compared with limit values, the maximum ratio is processed, a three-phase bridge controllable rectifying circuit is controlled according to the maximum ratio, thus the operationtime is shortened advantageously, and the CPU expenditure is less; and the maximum ratio is subjected to PI adjustment, then an instruction current is output, Id is adjusted according to the instruction current, Iq is set to be zero, and the system power factor is effectively increased.

Description

technical field [0001] The invention belongs to the field of chargers, and in particular relates to a charger control method. Background technique [0002] At present, high frequency is the development trend of power electronics technology. Increasing the switching frequency, reducing power loss and improving work efficiency can further improve the power density and reliability of the system, with lower noise and faster response capability. At the same time, it helps to remove unnecessary absorption circuits and redundant heat dissipation devices, thereby further reducing costs. However, in the existing control methods, in order to improve the power factor, a large calculation speed is often required, so it will occupy a large CPU expenditure, thereby reducing the control of other aspects, or need to be equipped with a CPU with a high calculation speed. But this will cause a large cost increase. Contents of the invention [0003] The invention aims at the technical probl...

Claims

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Application Information

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IPC IPC(8): H02J7/10H02J7/04
CPCH02J7/045H02J7/06H02J2007/10
Inventor 韩冰李海洋林鹏王暄朱友远迟久鸣张云龙沙琮田时军伟佟文强高潇司宇航
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST