Product specifications

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Company Description

Shenzhen Go-Gold Motor Co., Ltd established in 2015, which specialized in manufacturing in various of Universal motor, DC motor, Induction motor and Brushless motor that are widely applied to household appliances, intelligent home, electric tools, medical equipment etc.

The factory occupies more than 30,000 square meters, the annual turnover is more than 60 million dollars with production volume of 20 million units. With a group of 150 professional technicians and quality controlling, and the advanced equipment of research & development, producing and quality inspection that is to control a strict design and quality assurance.

Most of the motor are mainly exported to Europe, US, Japan, Korea, Brazil, etc. Following the development of national macroeconomic strategy and expanding domestic demand, we have been more focused on the internal market. Go-Gold Motor is a company that provides professional technical guidance and best after-sale service to satisfy every customer with the principle "Quality and Reputation Always Come First".

Our company is planning to invest one million dollars to set up an R& D Center in Shenzhen, combining the Motor Technical Center of university and Mental R& D Center, to provide a best service, innovative and energy-efficient product, starting from staff training, product designing with one-station service to provide a best motor solution to our clients.

Brushless DC motors

Brushless DC motors use semiconductor switching devices to achieve electronic commutation, which replaces traditional contact commutators and brushes with electronic switching devices. It has the advantages of high reliability, no commutation sparks, and low mechanical noise, and is widely used in high-end recording consoles, video recorders, electronic instruments, and automated office equipment.

A brushless DC motor is composed of a permanent magnet rotor, a multipole winding stator, a position sensor, etc. Position sensing commutates the current of the stator winding in a certain order according to the changes in rotor position (that is, detects the position of the rotor magnetic pole relative to the stator winding, and generates a position sensing signal at the determined position. After being processed by the signal conversion circuit, the power switch circuit is controlled to switch the winding current according to a certain logical relationship). The working voltage of the stator winding is provided by an electronic switch circuit controlled by the position sensor output.

There are three types of position sensors: magnetic sensitive, photoelectric, and electromagnetic.

Brushless DC motors using magnetic sensitive position sensors have magnetic sensor components (such as Hall elements, magnetic diodes, magnetic transistor, magnetic resistors, or specialized integrated circuits) installed on the stator components to detect changes in the magnetic field generated by the rotation of permanent magnets and rotors.

A brushless DC motor using photoelectric position sensors is equipped with photoelectric sensor components at certain positions on the stator assembly, a light shield is installed on the rotor, and the light source is a light-emitting diode or small light bulb. When the rotor rotates, the photosensitive components on the stator will intermittently generate pulse signals at a certain frequency due to the effect of the shading plate.
A brushless DC motor using electromagnetic position sensors is equipped with electromagnetic sensor components (such as coupling transformers, proximity switches, LC resonant circuits, etc.) installed on the stator assembly. When the position of the permanent magnet rotor changes, the electromagnetic effect will cause the electromagnetic sensor to generate high-frequency modulation signals (whose amplitude changes with the rotor position).