Mechanical power transmission assembly

• US 5,565,723 A
• Filed: 10/31/1994
• Issued: 10/15/1996
• Est. Priority Date: 10/31/1994
• Status: Expired due to Fees

• Current Assignee: Pranab Dastidar
• Original Assignee: Pranab Dastidar
• Inventors: Dastidar, Pranab
• Primary Examiner(s): Dougherty, Thomas M.
• Assistant Examiner(s): ENAD, ELVIN GENARGUE
• Application Number:
  US08/331,817
• Time in Patent Office: 715 Days
• Field of Search: 310/103, 310/104, 310/105, 310/108, 310/109, 310/78
• US Class Current: 310/103
• CPC Class Codes: B60K 17/12 of electric gearing of electrically-actuated clutches B60K17/02
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: H02K 19/10 for multi-phase current
• CPC Class Codes: H02K 23/40 characterised by the arrangement of the magnet circuits
• CPC Class Codes: H02K 49/06 of the synchronous type H02K49/10 takes precedence
• CPC Class Codes: H02K 49/08 of the collector armature type
• CPC Class Codes: H02P 15/00 Arrangements for controlling dynamo-electric brakes or clutches controlling speed of dynamo-electric motors by means of a separate brake H02P29/04, vector control H02P21/00 see provisionally also H02K49/00 and H02P29/0022
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Abstract

A mechanical power transmission assembly which uses an electro-magnetic system with internal electrical feedback to obtain the desired torque speed characteristics at the load shaft is presented. The assembly comprises of two coaxial magnetic rotating parts having an air gap between them with one part capable of rotating over the other at different speeds. One of the rotors is connected to the driving engine and the other rotor to the load shaft. The magnetic parts house electrical windings which are connected to each other through means such as commutators or slip rings and brushes allowing direct or alternating currents, as desired, to circulate in the windings and with means for controlling the currents in them. The assembly system is capable of being used for a variety of purposes besides mechanical power transmission, such as for staffing the engine and supplying electrical power.

Claims

1. Mechanical power transmission assembly having coaxial rotatable inner and outer parts of magnetic material, each independantly rotatable, with air gap space between the rotatable parts, one part connected to a driving engine and the other to a load to be driven at variable speed, each of the rotatable parts provided with electrical windings and means for commutation for obtaining direct current from current generated in the windings, with means for controlling the direct current and feeding back into the windings of the other rotatable part, with the means for commutation of one rotatable part placed with substantial angular displacement from the means for commutation of the other rotatable part, to enable magnetic force element in the air gap space between the two rotatable parts due to the current in the windings, to have substantial angular displacement from magnetic force element in the same air gap space from the other rotatable part to generate torque, which enables effective transmission of power from the engine to the load at variable speeds of both the engine and the load.

2. Mechanical power transmission assembly having coaxial rotatable inner and outer parts of magnetic material, each independantly rotatable, with air gap space between the rotatable parts, one part connected to a driving engine and the other to a load to be driven at variable speed, each of the rotatable parts provided with electrical windings, means for tapping generated alternating current from one rotatable part, with means for controlling the current and means for conversion to direct current, with means for feeding the converted direct current into the windings of the other rotatable part, to produce rotating magnetic force element in the air gap space between the rotatable parts, to generate torque from interaction with the alternating current in the windings, to enable effective transmission of power from the engine to the load at variable speeds of both the engine and the load.