Patent Application
20080074822
The present invention uses impedance component and switch device to match with the excitation coils of electromagnetic braking device in order to provide the full voltage actuation of excitation coil; through the switching of switch device to reduce the voltage of excitation winding in order to reduce electrical current while still maintains the operation of electrical excitation for reducing electrical current. This invention could be for the application of electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, or driving coils installed on the excitation windings of electromotor or generator, etc.
Switch device 101: mechanical or electrical switches, relay, electromagnetic switch or solid state switch component and related operating circuit; operated by human power, or mechanical power, or fluid power, or electrical energy; using alternating or direct current energy to deliver to electrical excitation load 102 or for cutting off electricity; for the switching and operation of switch device 101 for the full voltage actuation of electrically excited loading; then switch over to connecting the excitation coil 102′ and impedance 104 in series for reducing the voltage of excitation coil 102′ in order to reduce electrical current while still can maintain the operation of electrical excitation;
Electrical excitation load 102: an electromagnetic actuating device with electrical excitation coil 102′, consists of devices such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc. or driving coils installed on the excited windings of electromotor or generator;
Capacitor 103: AC or DC capacitor selected to match based on the specification of electrically excited load 102; or other component that could store and discharge electricity, that can provide assistance to the coil 102′ of electrically excited load 102 to maintain stable operation when switching the switch device 101 between series and parallel connections to excitation coil 102′. Such capacitor 103 can either be installed or not installed based on the need;
Impedance body 104: (1) when used in DC power, impedance body 104 consists of coil with resistive, or resistive impedance, or other resistive impedance component or device; when actuated through the switching control of switch device 101 that makes the two ends of the impedance body 104 short circuited so as to using full voltage to drive excitation coil 102′; after actuation the switch devices 101 on the two sides of impedance body 104 are switched to open circuit so as to make impedance body 104 and excitation coil 102′ connected in series and lower the end voltage of the excitation coil 102′ to reduce electrical current while the excitation coil 102′ still can maintain electrically excited operation; (2) when used in AC power, impedance body 104 consists of resistive, inductive, or capacitive impedance component, or halve wave rectification diode, etc.; when actuated through the switching control of switch device 101 that makes the two ends of the impedance body 104 short circuited so as to use full voltage to drive excitation coil 102′; after actuation the switch devices 101 on the two sides of impedance body 104 switched to open circuit and make impedance body 104 and excitation coil 102′ to connect in series and lower the end voltage of the excitation coil 102′ to reduce electrical current while the excitation coil 102′ still can maintain electrically excited operation.
This electrically excited load full voltage actuation reduced voltage sustaining driving circuit, when used in DC power, further can be as shown in
This electrically excited loading full voltage actuation reduced voltage sustaining driving circuit, of which the applicable electrically excited loading when actually applied can select based on the needs with different characteristic electrical power driving device at different voltage as electrically excited load, application device such as (1) with excitation coil having electrical magnetic effect including: electromagnetic actuator device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of (2) electromotor or (3) generator, and based on the need select from above loading one kind or more than one kind of same or different electrical power driving device constituting electrical power load.
In summary, this electrically excited load full voltage actuation reduced voltage sustaining driving circuit, on full voltage action, through the control of switch device 101, using the end voltage and current of the reducing electrically excited load 102 excitation coil 102′ for saving electrical energy, is indeed having pertinent function, therefore hereby proposes patent application.
