Ultra-High-Speed BLDC Permanent Magnet Motor Controller
Abstract
Ultra-High-Speed BLDC Permanent Magnet Motor Controller Solution
High end equipment such as flywheel energy storage and magnetic levitation compressors with the rapid advancement of energy storage technology and magnetic levitation technology are evolving towards extremely high rotational speeds (20,000+ RPM) and high power density. However, the traditional motor drive system under ultra high speed conditions encounters severe technical barriers:
High frequency drive : Ordinary frequency converters have limited output frequencies and cannot directly drive ultra high speed motors above 20,000 RPM, preventing the system from achieving the designed kinetic energy;
High frequency waveform distortion and overheating: At extremely high rotational speeds, conventional modulation methods lead to severe current harmonics, causing the generator rotor to overheat and increasing the risk of demagnetization;
Late Dynamic response : For equipment like flywheel energy storage that participates in grid frequency regulation, it needs to complete charging and discharging switching within an extremely short time. Traditional control logic cannot achieve millisecond-level torque response.
Power solution limitation: Traditional solutions are monotonous and difficult to balance cost and experience.
Solution
In response to the extremely high requirements of flywheel energy storage and magnetic levitation equipment for ultra high speed converters, SAVCH has independently developed an ultra high speed BLDC permanent magnet motor controller. This solution breaks through the technical blockade of high frequency drive and is specifically designed for ultra-high-speed operation scenarios:
Maximum frequency output: The controller can achieve a maximum output frequency of 3600.0Hz, perfect matching and easily handling the ultra high speed motor operation requirements of 20,000+ rpm;
Precise dual loop control: It adopts a "speed loop + current loop" dual-loop control architecture, combined with a high frequency resolution of 0.1Hz, ensure absolute smooth operation in the ultra high speed state;
Self-developed hybrid modulation strategy: It innovatively introduces synchronous and asynchronous hybrid modulation (special synchronous modulation) technology, reducing current harmonics during high frequency operation and effectively solving the problems of motor heating and electromagnetic interference.
Product Highlights
Wide range extreme speed regulation: The speed ratio reaches 1:100, supporting multiple independent acceleration and deceleration times as well as linear or S-curve acceleration/deceleration methods, suitable for complex working conditions involving frequent charging and discharging of flywheel energy;
Intelligent adaptive algorithm: Built-in HALL phase sequence learning, speed tracking, and timing control functions, making the system operation more intelligent and efficient;
High precision signal capture: Utilizing high precision HALL sensors for position detection, ensure zero delay in signal feedback at the million-turn level of operation;
Ultra fast dynamic response: Capable of achieving millisecond level response to load changes, with a 20% improvement in control accuracy, meeting the instantaneous power output requirements of special equipment;
Full dimensional safety matrix: Built-in short-circuit protection, overcurrent protection, overvoltage protection, undervoltage protection, overload protection, overheating protection, and critical overspeed protection for high speed rotating equipment, firmly establishing the safety baseline.
Application Cases
Solution
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WhatsAPP：13905051197
After-sales Service:400-616-1619
Email:savch@sanch.cn
Address: JIANGNAN HIGH TECH ELECTRONIC INFORMATION INDUSTRIAL PARK PHASE II C1, LICHENG DISTRICT, QUANZHOU CITY, FUJIAN,CHINA
