Technical Overview
The switched reluctance speed control motor system represents a new generation of variable speed drive systems, developed after the Dc motor drive and the variable frequency drive of the Ac asynchronous motor. This is a high-tech electromechanical product, built upon modern microelectronics, digital technology, power electronics, and modern control theory. its overall performance indicators are superior to those of conventional drive systems, The switched reluctance speed control motor system is primarily composed of four functional components: motor, position sensor, power circuit, and control circuit.
The switched reluctance speed control motor follows the "minimum reluctance principle", The stator and rotor of the reluctance motor have a double salient pole structure. When a specific phase of the stator winding is energized and the center lines of the stator and rotor poles are misaligned, a magnetic pull is exerted on the rotor, generating torque and driving it toward the position of minimum reluctance (the position where the center lines align).
Product Advantages
High System Efficiency
The motor maintains high efficiency across a broad speed control range particularly standing out at low speeds and under low load conditions compared to other speed control systems. Overall, its efficiency surpasses other speed control systems by 5%-15%.
Broad Speed Control Range
The motor can operate for extended periods under load, covering a speed range from the minimum specified to 1.5 times the rated speed.
Zero inrush Start Current
With the same rating, the PMaSynRM’s moment of inertia is only ~30 % of that of an equivalent induction motor. In applications demanding rapid acceleration this allows a marked reduction in overload torque and in the current rating of the accompanying inverter, cutting both capital cost and cycle time.
High Starting Torque and Low Starting Current
When the starting torque reaches therated torque, the starting current is merely 30% of the rated value.
Capability of Frequent Start-Stop and Forward-Reverse Rotation switching
The motor can handle frequent start-stopand forward-reverse rotation switching. When there is a braking unit and the braking power meets the time requirements, there are no stringent restrictions on the number of start-stop or forward-reverse rotation switching
Comprehensive Protection Mechanism
More than 30 types of fault protection are incorporated, including protection against drive failure, overcurrent, overvoltage, undervoltage, overheating, position signal loss, motor phase loss, input power phase loss, and phase current imbalance.
Superior Overload Capacity
The motor can operate at 1.5 times the rated load for 60s.
Keywords:XEMC
KCD Series Switched Reluctance Speed Control Motor
·Wide speed range: Continuous duty from min speed → 1.5 × rated speed.
·Zero inrush start: Rotor inertia ≈ 30 % of IM; smaller VFD current module, lower cost.
·High starting torque: 100 % rated torque at 30 % rated current.
·Frequent start-stop / reversal: Unlimited cycles when braking power is adequate.
·Rugged structure: No rotor windings/bars; stator-cooled, higher thermal margin, stronger mechanics.
·Full protection: 30+ faults covered (drive, OC, OV, UV, OT, encoder, phase-loss, imbalance, etc.).Superior overload capacity.
Classification：Products
OUR PRODUCT
Distributed Phase-Shifting Machine
With the implementation of the new GB 38755-2019 Guidelines for Security and Stability of Power Systems, requirements for short-circuit capacity and inertial support at new-energy stations have risen sharply. Distributed synchronous condensers are thus set to become standard equipment at such stations. High-capacity synchronous condensers offer outstanding reactive-power compensation; their sub-transient characteristics keep the internal voltage practically constant during faults, allowing them to absorb or inject large amounts of reactive power instantaneously and thereby safeguard grid operation. In particular, as the country vigorously expands its new-energy power sector, the deployment of distributed synchronous condensers can effectively counteract current surges, frequency deviations, voltage fluctuations and flicker—mitigating the inherent volatility and intermittency of renewable-energy sources.
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Flywheel Energy Storage System
Flywheel energy storage constitutes a physical energy storage method, harnessing the kinetic energy inherent in a rotating body to store and release electrical energy. This conversion between kinetic and electrical energy is achieved via an electric motor/generator coaxially mounted with the flywheel assembly. When operating as a motor, the drive unit accelerates the flywheel rotor, converting input electrical energy into stored kinetic energy. When operating as a generator, the drive unit decelerates the flywheel rotor, converting stored kinetic energy back into electrical energy for output. The acceleration and deceleration of the drive unit are controlled by a dedicated control unit.
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·The QF and QFW series synchronous generators represent a range developed to high standards and specifications through the introduction, assimilation and adaptation of advanced motor manufacturing technologies from both domestic and international sources. This development draws upon our company's extensive design and manufacturing expertise accumulated over more than eighty years. ·This series of generators boasts significant advantages including rational design, compact structure, superior craftsmanship, reliable operation, ease of maintenance, and extended service life. They offer excellent compatibility with various prime movers such as steam turbines and gas turbines. They are widely applicable in energy-saving and environmentally friendly sectors including biomass power generation, waste heat and pressure power generation, natural gas or coal gas utilization power generation, and combined heat and power generation.
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WHY CHOOSE US
Technical research and innovation capability
XEMC is the enterprise in China that promotes the most efficient motor models and has the widest coverage. Since 2010, its promotion volume has consistently ranked first in the industry. The "ultra green" series of motor products developed by it have a motor efficiency of 96.91% and key technical indicators reaching the international leading level.
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