Inverter quality appraisal

inverter is a converter that converts DC power (such as batteries, storage batteries) into AC power (generally 220V, 50Hz sine wave). It consists of an inverter bridge, control logic and filter circuit, and is widely used in household, industrial and mobile applications, such as connecting electrical appliances, power tools, car refrigerators, etc. Inverters play an important role in solar power systems, wind power systems, electric vehicles, etc., converting direct current into alternating current for use in household and industrial equipment.

Zhongke Testing provides inverter quality appraisal services.

Inverter quality identification can be analyzed from the following aspects:
Since the inverter itself also consumes power, a natural attribute of the inverter is that it cannot completely convert 100% of DC power into AC. However, conversion efficiency is a criterion for us to judge the quality of an inverter.
The conversion between AC and DC is one of the root causes of power quality problems. For example, during the conversion from AC to DC, the output DC may entrain AC components, causing damage to electronic components. During the process of inverting DC to AC, incomplete filtering will cause ripple voltage to the DC at the input end, affecting the efficiency of the input end. At the same time, it will bring many power quality problems to the AC output. Such as harmonics, imbalance, etc.

QC/T 1036-2016 Automotive power inverter
NB/T 32004-2018 Technical specifications for photovoltaic grid-connected inverters
GB/T 37408-2019 Technical requirements for photovoltaic power generation grid-connected inverters
NB/T 42142-2018 Technical specifications for photovoltaic grid-connected micro-inverters
NB/T 34038-2016 Inverters for solar photovoltaic water pump systems
GB/T 38330-2019 Photovoltaic power station inverter inspection and maintenance regulations
NB/T 32032-2016 Technical requirements for efficiency detection of inverters in photovoltaic power stations
GB/T 20321-2023 Inverters for off-grid wind and solar power generation systems
NB/T 32008-2013 Technical regulations for power quality detection of inverters in photovoltaic power stations
NB/T 10636-2021 Technical Supervision Regulations for Photovoltaic Power Station Inverters and Combiner Boxes
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