Innovative PEA space charge measurement systems for industrial applications

This article introduces new space charge measurement systems developed in Japan using the pulsed electroacoustics (PEA) method. The new methods include two types of 3-D systems, two types of transient systems for extremely high or low temperature, a small PEA unit for a portable system, and a mountable PEA unit that can be applied to another facility, such as a vacuum chamber. These new PEA systems should expand the applicable research field.