1.0 Basic Situation of Series Motor EMC

EMC testing, also known as Electromagnetic Compatibility (EMC), refers to the comprehensive evaluation of the interference level (EMI) and anti-interference capability (EMS) of electronic products in the electromagnetic field, and is one of the important indicators of product quality. The main standards for EMC of household appliances and power tools are EN55014. According to this standard, EMI testing mainly includes two aspects: Radiated Emission testing and Conducted Emission testing. At present, most household appliances exported to the European Union, South Korea, Japan and other countries and regions must comply with the above standards.

2.0 Market Demand or Pain Points

For series motor products, in order to solve the EMC testing problem, the general solution is to install capacitors, inductors, magnetic rings and other electronic components in the circuit to suppress the interference waveform. However, in many cases, the role of only a few capacitors and inductors is limited. Especially for some electrical products with thyristor speed regulation function or metal shells, it is very difficult to improve EMC.

3.0 Solutions Provided by Power Motor to Meet Market Demand or Pain Points and Technically Achievable Results

In order to solve the above problems, it is necessary to comprehensively consider the design of motor coil configuration, the selection of main components, especially the selection of carbon brushes and commutators, the design of filter circuits, and even the routing arrangement of power cords inside the housing and motor. At the same time, while meeting EMC testing, cost control should also be considered, and the minimum number of components, the simplest process, and standardized materials and components should be used to meet the requirements. For such products, Power Motor has a number of successful cases and rich experience, and can provide customers with fast and satisfactory services.

Typical products:

Series PU54/PU70/PU76/PU88/PU95/PU88 series. Most of these products achieve EMC testing compliance with only two pieces of inductors installed, without the need for Y capacitors.