Analog storage battery direct-current power supply

Abstract

The invention provides an analog storage battery direct-current power supply, which comprises a power supply converter, a main loop current detection device, a feed load controller and a feed load. The feed load controller regulates the feed load according to feedback voltage and comprises a signal amplification circuit, a signal processing circuit and a signal output drive circuit which are connected in turn; the signal amplification circuit is used for shaping and amplifying a signal output by the main loop current detection device; the signal processing circuit consists of a plurality of light beam drivers which are connected in series; and the output port of each light beam driver is connected with the feed load through the signal output drive circuit. A hardware drive electronic loadsystem improved by an analog storage battery is controlled by hardware, has reaction speed higher than that of the system controlled by software, and effectively improves time lag caused by feedback in software control, so the response speed of an electronic load is increased, the requirement on the work capacity of switching devices such as an insulated gate bipolar transistor (IGBT) and the like is reduced, and the service life of equipment is prolonged.

Description

technical field [0001] The invention relates to a DC power supply for simulating accumulator batteries, in particular to a high-power DC power supply for motor tests of electric vehicles and hybrid vehicles and motor controllers. Background technique [0002] In order to realize the comprehensive grasp of the performance of electric vehicles and hybrid vehicles, it is often necessary to understand the no-load torque and current, stall torque and stall current of such automobile motors, and the work of motor controllers under overvoltage and undervoltage conditions. Capacity, motor speed-torque characteristic curve, maximum operating speed, voltage fluctuation, short-term overvoltage, overload capacity and peak power, regenerative energy feedback and durability are tested, and the impact on vehicle performance can be obtained by testing the above items The main parameters, as well as the main factors affecting the control of the system. [0003] In order to complete the test...

AI Technical Summary

Problems solved by technology

However, there are some shortcomings in this method: for example, some devices (IGBT) that need to be switched frequently for a long time require a considerable number of switching times. The cost increases, especially it is very difficult to simulate high-power batteries

Because software control requires a certain amount of communication time, it takes a long time to transfer to the microcontroller for processing, which affects the system response speed

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