The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
To reduce energy consumption, we developed a technique that varies the number of magnetic poles in a permanent-magnet (PM) motor. In this paper, we propose a novel PM motor that can change the number of magnetic poles by a factor of three. The motor has a rotor embedded with PMs that have both high and low coercive forces. When the motor operates with six poles, it produces mainly a PM torque at low...
To reduce energy consumption, we developed a technique that rapidly varies the number of magnetic poles in a permanent-magnet (PM) motor. In this paper, we propose a novel PM motor that can change the number of magnetic poles by a factor of three. The motor has a rotor embedded with PMs that have both high and low coercive forces. When the motor operates with 6 poles, it produces a PM torque at low...
For reduction of energy consumption, we developed a technique that varies the number of magnetic poles in a permanent-magnet (PM) motor in accordance with speed. In this paper, we propose a novel PM motor that can change the number of magnetic poles and produce two types of torque. When the motor operates with 8 poles, it produces a PM torque at low speeds. When the motor changes to 4 poles, it produces...
The motors used in electrical vehicles and electrical appliances operate at variable speeds using flux-weakening control. The flux-weakening current, which depresses the voltage at high speeds, causes significant copper and core losses. Therefore, we developed a new technique for changing the number of poles and the machine constants in a permanent magnet motor on the basis of its speed. In this paper,...
Reduction in power consumed by motors is required for energy saving in electrical appliances and electric vehicles. The motors used in such appliances and vehicles operate at variable speeds. For reducing energy consumption of electrical appliances, the flux-weakening current that depresses the voltage at high speed leads to significant copper and core losses. Therefore, we have developed a new technique...
Reduction in power consumed by motors is required for energy saving in electrical appliances and electric vehicles. The motors used in such appliances and vehicles operate at variable speeds. For reducing energy consumption of electrical appliances, the flux-weakening current that depresses the voltage at high speed leads to significant copper and core losses. Therefore, we have developed a new technique...
Reduction of electrical consumption of a electric vehicle (EV) and electrical appliance is one of solutions for reduction of CO2 gas. Then, we have developed a novel permanent magnet motor for energy saving. In this paper, we propose a novel motor that can change magnetic flux by a new method magnetizing a permanent magnet and clarify the principle and unique characteristics. Furthermore, the results...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.