ELECTRICAL ENERGY STORAGE SYSTEM FOR DRIVING A LOAD
摘要
<p>An elevator hoist motor (12) is driven by electrical energy storage (EES) modules (16) that are controlled such that at least one EES module drives the hoist motor (12) and at least one EES module charges. Subsequently, a controller (32) changes the at least one EES module that is driving the hoist motor (12) and the at least one EES module that is charging.</p>
