It is revising now, in order to accord with authorizing, shut the rule, and carry out the regulation department to all other requirements for covering products and apparatus. The regulation that this rule passes offers the concrete sample to plan, authorize the requirement, require in place of the method for determining of efficiency, and the execution regulations of electric motor and small-scale electric motor.
“Rule interests in these products of people and consciousness of true improvement of American Ministry of Energy, “Schamel says. “The improvement of this kind of understanding not only makes people understand these energy-conserving potentiality to design better, have also increased to improving temperature and humidity control, reduce the sound level, concerted air current and better filtration, and some other advantages. ”
Boyd points out, PMSM technology is expanding to niche and transportation application too. “In addition, more quick microelectronics and more efficient driver may improve the adoption rate through lowering costs, “He says, ” consider the extra cost of efficiency, it may be limited to adopt this technical place in the future. ”
A future interesting attention of PMSM may be the concern increasing people to the cost and the rare earth magnet supplies. Schamel says, an advantage of PMSM is that they can work together with ferrite magnet.
“The main shortcoming of ferrite magnet lies in, when magnet is installed on surface of the assembly of the trochanter, they do not produce the magnetic flux density the same as rare earth magnet, this will cause lower torque density. ” PMSM of future generation used for HVAC industry that Nidec develops will adopt the spoke type trochanter technology. Such new trochanter technology uses low-cost ferrite magnet, and incline to have than the regular surface mounting more high torque density of trochanter assembly, this produced more low-cost electric organization to make.
But this is technological will continue changing and developing itself, the customer’s consciousness to this product will be changing.
“Besides reducing energy consumption, these products also have ability of speed changing, can realize other advantages, including concerted temperature control, improved humidity control, lower sound level, concerted air current and better air filtration. ” All these advantages will promote the lasting growth of PMSM.
“PMSM technology exist quite a long time already, it adopt widely more and more in the intersection of HVACR and trade, “Krites says, ” OEM understands this technology, and already used in air blower and compressor for many years. The contractor realizes the advantage of efficiency, and like advanced diagnosis more and more, but seem not to understand very much actual and technologically.