Japanese Standards Association

Rolling stock - Combined testing of power convertor with ac motors - Part 2: Convertor-inverter system with intermediate dc link
 N JIS E 5011-2

Annotation

This Standard applies to the combinations of ac motor(s), inverter and their control system, and its object is to specify:

— the performance characteristics of electric drives consisting of an inverter, alternating current motors, and the related control system;

— methods of verifying these performance characteristics by tests.

Two categories of combined systems can be considered:

a) alternating current motor(s) fed from an inverter without any control between the mechanical output (torque, speed) and the inverter itself (mostly auxiliary motors, for example cooling fan motors). The motor works exactly as if it were fed from a busbar (at variable frequency and voltage or not) ;

b) alternating current motor(s) (paralleled or not) with a control between the mechanical output and the inverter.

The category a) of systems is tested according to JIS E 5008 and JIS E 6102.

This Standard applies to the category b), mainly traction drives (see figure 2).

JIS E 6102 applies to convertor-fed alternating current motors, JIS E 5008 to convertors ; JIS E 5006 applies to electronic equipments, and this Standard applies to the combination of motor(s), convertors, and their control system. As a consequence, JIS E 6102 describes the tests to demonstrate the compliance of the motor to its specification, JIS E 5008 does the same for the convertor. It is self-evident that some of the tests mentioned in this Standard may in general replace the corresponding ones described in the above-mentioned standards. An agreement should be reached between the user and the manufacturer (hereafter referred to as "the interested parties") to avoid the duplication of tests (see, for example, the "Possible duplication of test" column in table 1).