BLDC MOTORS                                                                      Sensorless Control,Products and Design Specifications, Installation, Instructions, Market,Suppliers and Company Profiles           

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General
  • Brushless Direct Current (BLDC) motors are one of the motor types rapidly gaining popularity. BLDC motors are used in industries such as Appliances, Automotive, Aerospace, Consumer, Medical, Industrial Automation, Equipment and Instrumentation. As the name implies, BLDC motors do not use brushes for commutation; instead, they are electronically commutated.

  • BLDC motors have many advantages over brushed DC motors and induction motors. A few of these are:  Better speed versus torque characteristics, High dynamic response,  High efficiency,  Long operating life, Noiseless operation,  Higher speed ranges.

  • A brushless motor is constructed with a permanent magnet rotor and wire wound stator poles. Electrical energy is converted to mechanical energy by the magnetic attractive forces between the permanent magnet rotor and a rotating magnetic field induced in the wound stator poles .

Design

  • There are three phase for use with ThinGap brushless motors :  Connects between amplifier and motor,  Easy terminal strip connection,  High efficiency 100 μH load matching,  Rated at 48 Vdc, 12 Amps continuous,  Meets typical 200 μH in-line, amplifier loading requirement , Versions available for ThinGap brush motors,  Weight 7.4 oz (211 g).

  • The TC647 is a combination proportional brushless DC (BDC) fan controller and fault detector. Individual TC647s are driven by a common input signal. Normally, the circuit labeled “Unit 1” is in service and provides proportional speed control for Fan 1 based on the VIN input voltage. During normal operation (Fan 1 rotating), Unit 1's FAULT line is high, causing Q2 to pull the VMIN2 node of Unit 2 low. This causes the TC647 in Unit 2 to be in shutdown mode.

Technology

  • State-of-the-art sensorless BLDC motor control technology provides performance on par with conventional hall sensor commutated drives in non-servo applications. Cost reductions of motor materials and electronic components, along with the reduced wiring and hardware simplicity of “Ping Method” sensorless controls, are making BLDC motors and drives a superior choice in commercial applications where energy efficiency or motor-frame size are of primary importance.

  • 3MEN Technology is used in the  development and research of power electronic products. The reason is that main power energy comes from electricity, no matter in our daily life or production equipment in business. It needs to transfer electric energy into variety energy in application. That is the importance of power electronic technology for people.

  • "Action Infinity" is the spirit of 3MEN. At 3MEM, our outstanding team is to revolutionize the industry with user-friendly product design and keep a leading research and promotion in this field. Our goal is to provide you cost effective products with unsurpassed performance to help you enhance your advantage in the competitive market.
     

Application

  • BLDC Motor find its application in: High rpm applications, Light weight applications, Low thermal emission applications.

  • While there are several options available to the manufacturer and user regarding the type of variable speed drive to use on the Extruder and rotating mold applications of the blow molding machine, there are some distinct advantages in the use of the Brushless D.C. drive while other types of drives may become available in the future that may provide these advantages, they are not yet available for general use in the HP sizes necessary for most blow molding machines. The Brushless DC technology is here and in wide use in various extrusion and related applications in the plastics industry.

Market

  • Today's motor control applications bring a set of challenges and demands ideal for versatile and full-featured application-specific 8-bit MCUs, commented ZiLOG chairman and CEO James Thorburn. . We have conducted extensive research into customer requirements in this market and have developed a new family of microcontrollers that we believe are leading edge solutions for advanced motor control architectures, including sensorless BLDC motor control systems.
  •  Our strategy is to create and produce innovative, highly integrated, price-competitive system solutions for motor control technologies. These solutions will help solve engineering challenges such as fast over-current detection and fault control, reliable operation, and back-EMF sensing at a wide range of speeds including very low speeds, along with extremely smooth start-up and reversal of the direction of rotation."
     

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