T/BEA 43000-2017 Active Group standards

T/BEA 43000-2017 Definition and Measurement of DC Power Supply Output Impedance

T/BEA 43000-2017

Publish Date: 2017-02-01 Implement Date: 2017-03-03 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/BEA 43000-2017

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Video, pulse system equipment

ICS Name: Rectifiers, converters, and regulated power supplies

Publish Date: 2017-02-01

Implement Date: 2017-03-03

Scope

This standard specifies the definition and measurement principles of output impedance for DC power supply products, as well as the measurement system and instruments, measurement conditions, measurement methods, processing of measurement results, and measurement reports. This standard applies to DC power supplies with a frequency range of 10Hz to 1MHz, an impedance range of 0.01Ω to 1000Ω, a voltage of 5V to 200V, and a current of less than 100A, which output in a regulated mode. It also applies to DC distributed power systems, DC/DC modules, or AC/DC modules. This standard does not apply to DC constant-current power supplies. When the DC power supply and the load are at the DC operating point, a measurement section is selected on the bus, and a single-frequency AC disturbance current is injected into the measurement section. This will cause an AC disturbance voltage response on the measurement section. To ensure that the AC disturbance voltage and current are small enough that the disturbance phenomenon occurs in the linear region near the DC operating point, and that neither the AC current nor the AC voltage experiences significant distortion, the fundamental-wave phase-angle complex ratio between the AC disturbance voltage and the AC disturbance current flowing into the power supply direction is measured to obtain the power supply output impedance. The basic principle is shown in Figure 1. The power supply output impedance is calculated according to Equation (1). This impedance is directly related to the DC operating point and the measurement section, and is expressed by the impedance modulus and impedance angle. By scanning several frequency points across the entire frequency range point by point, the measurement results are functions of the impedance modulus and impedance angle versus frequency.